Official means first party. The vendor ships and maintains the server itself, and a wrapper built by Zapier, viaSocket, Composio or any other third party does not count no matter how well it works. 200 of these 201 entries carry a parseable URL in the mcp_url field; the rest claim a server in prose without one, which is recorded as a risk on the methodology page rather than cleaned up quietly. Probed live on 2026-09-04: 28 of the official entries record a URL that answered as an MCP server, and 88 record a documentation page rather than an endpoint. Each tool page says which.
| Tool | Category | Server URL | Auth | Gate |
|---|---|---|---|---|
| Airbyte airbyte.com | RevOps Infra | https://mcp.airbyte.ai/mcp +1 more | OAuth or an API key Two-layer OAuth 2.0 - OAuth into the Airbyte account/org for the MCP server itself, plus... | Free to start |
| Anymail Finder anymailfinder.com | Data & Enrichment | https://api.anymailfinder.com/mcp +1 more | OAuth or an API key Browser-based OAuth-style sign-in and approval for Claude, ChatGPT and Cursor, with an... | Free to start |
| Apideck apideck.com | MCP Layer | https://github.com/apideck-libraries/mcp +1 more | OAuth or an API key Managed OAuth via Apideck Vault on the hosted endpoint, or x-apideck-api-key plus... | Free to start |
| Apify apify.com | Data & Enrichment | https://mcp.apify.com +1 more | OAuth or an API key oauth (recommended, browser sign-in) or an Apify API token as an Authorization Bearer... | Free to start |
| Attio attio.com | RevOps Infra | https://mcp.attio.com/mcp +1 more | OAuth OAuth - one-time login as the user's own Attio account, no API key needed. Reads... | Free to start |
| Autobound autobound.ai | Engagement & Outbound | https://www.autobound.ai/integrations/mcp +1 more | API key api key via an AUTOBOUND_API_KEY environment variable in the MCP client config. | Free to start |
| Browserbase browserbase.com | Data & Enrichment | https://mcp.browserbase.com/mcp +1 more | API key api key passed as a browserbaseApiKey query parameter on the endpoint URL; the docs list... | Free to start |
| Buffer buffer.com | Community & Dark Social | https://mcp.buffer.com/mcp +1 more | API key api key. The vendor's guide instructs the user to generate an API key from the developer... | Free to start |
| Cal.com cal.com | Scheduling & Routing | https://github.com/calcom/cal-mcp +1 more | OAuth or an API key Two paths. Hosted server (mcp.cal.com) uses OAuth 2.1 - "your client handles the... | Free to start |
| Calendly calendly.com | Scheduling & Routing | https://mcp.calendly.com +3 more | OAuth or an API key OAuth 2.1 Authorization Code + PKCE (S256) with Dynamic Client Registration (RFC 7591).... | Free to start |
| Cargo getcargo.ai | RevOps Infra | https://docs.getcargo.ai/ | OAuth unknown for the MCP layer specifically - docs confirm the capability but not its auth... | Free to start |
| Census (now operates as "Fivetran Activations") getcensus.com | RevOps Infra | https://github.com/fivetran/fivetran-mcp | API key API key + secret via env vars (FIVETRAN_API_KEY, FIVETRAN_API_SECRET). | Free to start |
| Common Paper commonpaper.com | Proposals & Deals | https://api.commonpaper.com/mcp +2 more | Auth not recorded unknown - not detailed in the release-notes excerpt reviewed. | Free to start |
| Composio composio.dev | MCP Layer | https://connect.composio.dev/mcp +2 more | OAuth or an API key Composio brokers OAuth for each connected toolkit (HubSpot, Gmail, Slack, etc.) on the... | Free to start |
| Crustdata crustdata.com | Data & Enrichment | https://install.crustdata.com/mcp +1 more | Auth not recorded unknown | Free to start |
| Crustdata crustdata.com | Signals & Intent | https://install.crustdata.com/mcp +2 more | API key api key (free sandbox key available) | Free to start |
| Diffbot diffbot.com | Data & Enrichment | https://github.com/diffbot/diffbot-mcp | API key api key (free Diffbot token required to use the MCP tools) | Free to start |
| Enrow enrow.io | Data & Enrichment | https://github.com/EnrowAPI/enrow-mcp +1 more | API key api key. ENROW_API_KEY env var for stdio, or an Authorization Bearer / x-enrow-api-key... | Free to start |
| Exa exa.ai | Data & Enrichment | https://github.com/exa-labs/exa-mcp-server +1 more | API key api key (issued via dashboard.exa.ai) for the self-hosted server and for quota. CORRECTED... | Free to start |
| Fathom fathom.video | Conversation Intel | https://developers.fathom.ai/mcp-docs +4 more | OAuth or an API key In-client authorization: the docs say to add the server URL "then authenticate to access... | Free to start |
| Firecrawl firecrawl.dev | Data & Enrichment | https://mcp.firecrawl.dev/v2/mcp +4 more | OAuth or an API key api key as an Authorization Bearer header, or browser sign-in via the /v2/mcp-oauth... | Free to start |
| Fireflies.ai fireflies.ai | Conversation Intel | https://api.fireflies.ai/mcp +1 more | OAuth or an API key OAuth (Google/Microsoft, recommended) or manual API key for Claude Desktop and other MCP... | Free to start |
| Fivetran fivetran.com | RevOps Infra | https://github.com/fivetran/fivetran-mcp | API key API key + API secret via env vars, generated from the Fivetran dashboard. Scoped... | Free to start |
| FullEnrich fullenrich.com | Data & Enrichment | https://mcp.fullenrich.com/mcp +1 more | OAuth oauth (browser sign-in to FullEnrich account; no manual API key needed) | Free to start |
| Google BigQuery cloud.google.com | RevOps Infra | https://bigquery.googleapis.com/mcp +1 more | OAuth or an API key oauth. The docs state the server uses the "OAuth 2.0 protocol with IAM for authentication... | Free to start |
| Hightouch hightouch.com | RevOps Infra | https://hightouch.com/docs/ai-integrations/mcp | Auth not recorded Existing Hightouch workspace auth with role-based access control; however the MCP server... | Free to start |
| HubSpot hubspot.com | RevOps Infra | https://developers.hubspot.com/ai-tools/mcp | OAuth OAuth 2.0 for the hosted Remote MCP Server (migrating to OAuth 2.1 with PKCE +... | Free to start |
| Hunter.io hunter.io | Data & Enrichment | https://hunter.io/api-documentation#mcp | API key api key (HUNTER_API_KEY) | Free to start |
| Jotform jotform.com | Inbound & PLG Chat | https://mcp.jotform.com +2 more | OAuth or an API key oauth only. The vendor's MCP page states "Bearer-token access is not supported; OAuth 2.0... | Free to start |
| Knit MCP getknit.dev | MCP Layer | https://www.getknit.dev/mcp-servers +1 more | OAuth Knit-managed OAuth or SAML per connected application; the customer authorises each end... | Free to start |
| Leadfeeder (product line rebranded/merged under Dealfront; dealfront.com redirects to leadfeeder.com) leadfeeder.com | Signals & Intent | https://www.leadfeeder.com/features/mcp-server/ +1 more | OAuth OAuth - user signs in with their own Leadfeeder account; vendor states "No keys pasted... | Free to start |
| LeadMagic leadmagic.io | Data & Enrichment | https://github.com/LeadMagic/leadmagic-mcp +1 more | OAuth or an API key api key for local/self-hosted install (LEADMAGIC_API_KEY env var); OAuth Bearer token... | Free to start |
| Lusha lusha.com | Data & Enrichment | https://github.com/lusha-oss/lusha-public-api-mcp +2 more | API key api key (LUSHA_API_KEY) | Free to start |
| MeetGeek meetgeek.ai | Conversation Intel | https://mcp.meetgeek.ai/mcp +2 more | OAuth or an API key Two paths. The cloud server uses OAuth 2.0 with Google or Microsoft sign-in and no API... | Free to start |
| Merge Agent Handler merge.dev | MCP Layer | https://github.com/merge-api/merge-mcp +3 more | OAuth or an API key api key in an Authorization Bearer header, alongside the identity encoded in the URL... | Free to start |
| Metricool metricool.com | Community & Dark Social | https://ai.metricool.com/mcp +3 more | OAuth oauth (browser authorisation in clients that support remote OAuth MCP) or a... | Free to start |
| Model Context Protocol - official servers repo github.com | MCP Layer | https://github.com/modelcontextprotocol/servers | API key Per-server - individual servers take credentials (e.g. API tokens) via environment... | Free to start |
| monday.com (monday CRM) monday.com | RevOps Infra | https://mcp.monday.com/mcp +3 more | OAuth or an API key oauth for the remote server. The vendor states "monday MCP remote server connects via the... | Free to start |
| n8n n8n.io | RevOps Infra | https://github.com/n8n-io/n8n +2 more | API key MCP Server Trigger supports Bearer or Header auth to secure the exposed endpoint;... | Free to start |
| PandaDoc pandadoc.com | Proposals & Deals | https://mcp.pandadoc.com/v1/mcp +2 more | OAuth OAuth - remote hosted server, add the server URL to an MCP client (Claude Desktop, Claude... | Free to start |
| Pipedrive pipedrive.com | RevOps Infra | https://mcp.pipedrive.com/mcp +1 more | OAuth OAuth - "Connect in minutes through secure OAuth. No coding, no API development, no... | Free to start |
| Pipeworx pipeworx.io | MCP Layer | https://gateway.pipeworx.io/mcp +4 more | Auth not recorded none required for the free tiers. The vendor states "No API keys" and that an anonymous... | Free to start |
| PredictLeads predictleads.com | Signals & Intent | https://mcp.predictleads.com/ | API key api key (same API key/token used for REST API calls, per vendor blog) | Free to start |
| Prospeo prospeo.io | Data & Enrichment | https://github.com/prospeo-v2/prospeo-mcp-server | OAuth or an API key OAuth 2.0 for the hosted server (auto-handled by Claude.ai/Desktop via the MCP... | Free to start |
| Relevance AI relevanceai.com | AI SDRs | https://mcp.relevanceai.com/ +1 more | OAuth OAuth (tokens may expire after inactivity; re-auth via login flow); Viewer/Chat project... | Free to start |
| Retool retool.com | RevOps Infra | https://mcp.retool.com/mcp +2 more | OAuth OAuth 2.0. Endpoint pattern https://<your-retool-instance>/mcp over HTTP. | Free to start |
| Snowflake (Cortex AI, as GTM/RevOps warehouse layer) snowflake.com | RevOps Infra | https://docs.snowflake.com/en/user-guide/snowflake-c... +1 more | OAuth Snowflake OAuth 2.0 by default, or External OAuth (Okta, Microsoft Entra ID); hardcoded... | Free to start |
| StackOne stackone.com | MCP Layer | https://mcp.stackone.com/mcp +2 more | OAuth or an API key Basic authentication plus a per-account identifier, with StackOne brokering OAuth, API... | Free to start |
| Tally tally.so | Inbound & PLG Chat | https://api.tally.so/mcp +2 more | OAuth or an API key oauth or api key. The help page states "The easiest way to connect is through OAuth, just... | Free to start |
| Tavily tavily.com | Data & Enrichment | https://mcp.tavily.com/mcp/ +1 more | OAuth or an API key api key as a tavilyApiKey query parameter or in the Authorization header, or OAuth. The... | Free to start |
| Tavus tavus.io | Video Prospecting | https://mcp.tavus.io/mcp +3 more | OAuth or an API key OAuth 2.0 browser-based flow; the exchange mints a per-user API key server-side, nothing... | Free to start |
| TheirStack theirstack.com | Data & Enrichment | https://api.theirstack.com/mcp/ +3 more | API key api key (same credentials as the REST API) | Free to start |
| TheirStack theirstack.com | Signals & Intent | https://api.theirstack.com/mcp/ +1 more | Auth not recorded unknown - page references a "How does authentication work?" FAQ but the answer wasn't... | Free to start |
| Tidio tidio.com | Inbound & PLG Chat | https://github.com/TidioPoland/tidio-mcp-connector +1 more | OAuth OAuth: the tidio_connect tool opens a browser to Tidio's login page, then stores access... | Free to start |
| Trumpet (sendtrumpet.com) sendtrumpet.com | Proposals & Deals | https://www.sendtrumpet.com/blog-posts/introducing-t... | OAuth unknown - vendor states it is "installable in five minutes with no engineering required,"... | Free to start |
| usefulapi.io usefulapi.io | MCP Layer | https://pipedrive.usefulapi.io/mcp +3 more | OAuth or an API key per-application OAuth. The setup instructions add the subdomain as a custom connector and... | Free to start |
| Warmly warmly.ai | Data & Enrichment | https://www.warmly.ai/launches/warmly-mcp-and-api-ar... | OAuth or an API key OAuth for the MCP connector; API key for the REST API | Free to start |
| Warmly (Warmly.ai) warmly.ai | Signals & Intent | https://www.warmly.ai/launches/warmly-mcp-and-api-ar... | OAuth or an API key MCP uses OAuth-based login (no manual key management); the separate REST API... | Free to start |
| Wistia wistia.com | Video Prospecting | https://api.wistia.com/mcp/api +1 more | OAuth or an API key oauth or an access token as an Authorization Bearer header. The docs state "If you use an... | Free to start |
| Zapier zapier.com | RevOps Infra | https://mcp.zapier.com/api/v1/connect +3 more | OAuth or an API key Reuses Zapier's existing 13+ year credential infrastructure - connect an AI client... | Free to start |
| Zapier MCP zapier.com | MCP Layer | https://mcp.zapier.com/api/v1/connect +3 more | OAuth Uses Zapier's existing decade-old app-connection/OAuth infrastructure - you authorize... | Free to start |
| ZoomInfo zoominfo.com | Data & Enrichment | https://mcp.zoominfo.com/mcp +2 more | OAuth OAuth for user-level access, or client credentials for service accounts; no API keys... | Free to start |
| Affinity affinity.co | RevOps Infra | https://mcp.affinity.co/mcp +1 more | OAuth or an API key OAuth where the client supports it, otherwise an API key. Local deployment is API key... | Paid, self-serve |
| Airspeed (formerly Glyphic) goairspeed.com | Conversation Intel | https://api.glyphic.ai/mcp +1 more | API key Airspeed API key passed as an X-API-Key header. | Paid, self-serve |
| Allegrow allegrow.co | Email Deliverability | https://mcp.allegrow.co/mcp +1 more | OAuth OAuth - connects through Claude's standard connector authorization flow; user logs into... | Paid, self-serve |
| Amplemarket (Duo Copilot) amplemarket.com | AI SDRs | https://mcp.amplemarket.com/mcp +2 more | Auth not recorded Account sign-in (no API key needed) - "sign in with your Amplemarket account when... | Paid, self-serve |
| Apollo.io apollo.io | Data & Enrichment | https://github.com/apolloio/apollo-mcp-plugin | OAuth OAuth (Apollo.io sign-in/authorization flow in the client) | Paid, self-serve |
| Arphie arphie.ai | Proposals & Deals | referenced via pricing/product pages describing an "Arphie... | Auth not recorded unknown | Paid, self-serve |
| Attention attention.com | Conversation Intel | https://docs.attention.com/mcp/overview +1 more | OAuth or an API key oauth for end users, api key for programmatic access, per... | Paid, self-serve |
| Avoma avoma.com | Conversation Intel | https://mcp.avoma.com/mcp +1 more | API key API key pair (CLIENT_KEY:CLIENT_SECRET) generated at Settings → Organization → Developer. | Paid, self-serve |
| Brand24 brand24.com | Community & Dark Social | https://mcp.brand24.com/v1/mcp +1 more | OAuth OAuth; the help article states "MCP access is available to Brand24 subscribers. The data... | Paid, self-serve |
| Bright Data brightdata.com | Data & Enrichment | https://github.com/brightdata/brightdata-mcp | API key api key (Bright Data API token) | Paid, self-serve |
| CatchIntent catchintent.com | Signals & Intent | https://engine.catchintent.com/mcp +3 more | OAuth oauth. The vendor's MCP page states "One-time OAuth 2.1 authorization. Your MCP client... | Paid, self-serve |
| Chili Piper chilipiper.com | Scheduling & Routing | https://www.chilipiper.com/products/mcp +3 more | OAuth or an API key Two supported paths, both vendor-documented. Option A (vendor-recommended): a Chili Piper... | Paid, self-serve |
| Chili Piper chilipiper.com | Inbound & PLG Chat | https://www.chilipiper.com/products/mcp +3 more | OAuth or an API key Two supported paths, both vendor-documented. Option A (vendor-recommended): a Chili Piper... | Paid, self-serve |
| Circleback circleback.ai | Conversation Intel | https://circleback.ai/api/mcp +2 more | OAuth OAuth with dynamic client registration, compliant with the authenticated remote MCP spec.... | Paid, self-serve |
| Clari Copilot clari.com | Conversation Intel | https://mcp.clari.com/mcp +2 more | OAuth or an API key Scalekit-hosted connector uses per-user delegated OAuth-style authorization in Scalekit's... | Paid, self-serve |
| Clay clay.com | Data & Enrichment | https://www.clay.com/mcp +1 more | API key Session cookie - the same token used to log into app.clay.com in-browser, which grants... | Paid, self-serve |
| Close (Close CRM) close.com | RevOps Infra | https://mcp.close.com/mcp +1 more | OAuth or an API key Dual - OAuth 2.0 with Dynamic Client Registration (recommended; used by Claude, ChatGPT,... | Paid, self-serve |
| Coresignal coresignal.com | Data & Enrichment | https://mcp.coresignal.com/mcp/v2 +2 more | OAuth OAuth 2.1 - per docs, the data key is fetched live with every request and never stored,... | Paid, self-serve |
| Cube Software cubesoftware.com | Forecasting & Revenue | https://mcp.cubesoftware.com/ +2 more | OAuth OAuth - no manual API key management. | Paid, self-serve |
| CUFinder cufinder.io | Data & Enrichment | https://mcp.cufinder.io/mcp +1 more | API key api key from the CUFinder dashboard under Account Settings then API Dashboard. Streamable... | Paid, self-serve |
| dbt (dbt platform remote MCP) getdbt.com | RevOps Infra | https://YOUR_DBT_HOST_URL/api/ai/v1/mcp +3 more | OAuth or an API key oauth (beta) or token. The docs state "OAuth lets you connect to the remote MCP server... | Paid, self-serve |
| Derrick derrick-app.com | Data & Enrichment | https://app1.derrick-app.com/mcp +2 more | API key api key. The vendor's page states the MCP installs without credentials but every tool... | Paid, self-serve |
| DocuSign docusign.com | Proposals & Deals | https://developers.docusign.com/platform/mcp-server/ +2 more | OAuth OAuth - Streamable HTTP transport; first connection opens a browser window to sign in and... | Paid, self-serve |
| Dropcontact dropcontact.com | Data & Enrichment | https://mcp.dropcontact.com/mcp +1 more | OAuth or an API key Hosted server at mcp.dropcontact.com/mcp/, supporting OAuth (recommended, browser-based)... | Paid, self-serve |
| Explorium explorium.ai | Data & Enrichment | https://mcp-github-registry.explorium.ai/mcp +3 more | API key api key | Paid, self-serve |
| Factors.ai factors.ai | Signals & Intent | https://mcp.factors.ai/mcp +1 more | API key Personal access token (generated in Settings > AI Features), used via Claude custom... | Paid, self-serve |
| Fellow fellow.ai | Conversation Intel | https://fellow.app/mcp +1 more | OAuth OAuth, with OAuth 2.0 dynamic discovery supported. | Paid, self-serve |
| Fiber AI fiber.ai | Data & Enrichment | https://mcp.fiber.ai/mcp/v3 +2 more | OAuth or an API key OAuth via Clerk on the v3 endpoint; x-api-key header on the v2 and legacy endpoints. | Paid, self-serve |
| Front front.com | Inbound & PLG Chat | https://mcp.frontapp.com/mcp +1 more | OAuth OAuth 2.1 with PKCE, per teammate. Front's docs state the server does not support Dynamic... | Paid, self-serve |
| Grain grain.com | Conversation Intel | https://api.grain.com/_/mcp +2 more | OAuth OAuth via the native Claude integration, or manual server-URL setup for other MCP... | Paid, self-serve |
| Granola granola.ai | Conversation Intel | https://www.pulsemcp.com/servers/granola +2 more | OAuth OAuth - no manual API key required. | Paid, self-serve |
| Help Scout helpscout.com | Inbound & PLG Chat | https://mcp.helpscout.net/mcp +1 more | OAuth oauth. The vendor's article states the connector registers itself, so the OAuth client ID... | Paid, self-serve |
| Hex hex.tech | RevOps Infra | https://app.hex.tech/mcp +1 more | OAuth oauth. The docs state "Complete the OAuth flow to authorize access to your Hex... | Paid, self-serve |
| HeyGen heygen.com | Video Prospecting | https://mcp.heygen.com/mcp/v1/ +2 more | OAuth OAuth - vendor states "connect your HeyGen account, no API key required"; generation... | Paid, self-serve |
| HeyReach heyreach.io | Engagement & Outbound | https://mcp.heyreach.io/mcp +2 more | OAuth or an API key workspace-scoped "MCP key" + connection URL (API-key-style, not OAuth) | Paid, self-serve |
| HighLevel (GoHighLevel) gohighlevel.com | RevOps Infra | https://services.leadconnectorhq.com/mcp/ +1 more | API key A Private Integration Token passed as a bearer token, plus a locationId header. Tool... | Paid, self-serve |
| Hootsuite (Social OS) hootsuite.com | Community & Dark Social | https://mcp.hootsuite.com/perch +4 more | OAuth oauth. The vendor's setup steps end with "Sign in with your Hootsuite workspace when... | Paid, self-serve |
| Infraforge infraforge.ai | Email Deliverability | https://mcp.salesforge.ai/mcp | API key API key, generated from the Infraforge/Salesforge dashboard. | Paid, self-serve |
| Instantly instantly.ai | Engagement & Outbound | https://mcp.instantly.ai/mcp +1 more | API key api key (generated in Instantly Settings > Integrations > API Keys) | Paid, self-serve |
| Intercom (Fin) intercom.com | Inbound & PLG Chat | https://mcp.intercom.com/mcp +2 more | OAuth or an API key OAuth (browser-based, recommended) or a Bearer token using an Intercom API token;... | Paid, self-serve |
| JustCall justcall.io | Engagement & Outbound | https://mcp.justcall.host/mcp +2 more | API key api key. The vendor's docs show an Authorization header of the form "Bearer... | Paid, self-serve |
| Keyplay keyplay.io | Signals & Intent | https://api.keyplay.io/mcp +1 more | OAuth or an API key OAuth for Claude.ai and Claude Desktop, API key for Claude Code, per the vendor's docs | Paid, self-serve |
| Klenty klenty.com | AI SDRs | https://api.klenty.com/mcp +2 more | Third party platform auth Rides Zapier's hosted-connector auth at mcp.zapier.com (and Runbear's for the Slack... | Paid, self-serve |
| La Growth Machine lagrowthmachine.com | Engagement & Outbound | https://github.com/LaGrowthMachine/gtm-system +1 more | OAuth OAuth - no API key needed; first use opens a browser sign-in directly to the user's La... | Paid, self-serve |
| Lead411 lead411.com | Data & Enrichment | https://mcp.lead411.com/mcp +3 more | API key api key via X-API-KEY header. TRANSPORT IS DISPUTED: the official registry record says... | Paid, self-serve |
| LeadIQ leadiq.com | Data & Enrichment | https://mcp.leadiq.com/mcp +1 more | OAuth oauth. The vendor's page states the connector is added from the AI client's connector... | Paid, self-serve |
| lemlist lemlist.com | Engagement & Outbound | https://app.lemlist.com/mcp +1 more | OAuth or an API key OAuth (browser-based PKCE flow, recommended) or API key via X-API-Key header | Paid, self-serve |
| Maildoso maildoso.ai | Email Deliverability | https://maildoso.ai/ | Auth not recorded unknown - described only as "API and MCP access" bundled into every plan, without a... | Paid, self-serve |
| Mailforge mailforge.ai | Email Deliverability | https://mcp.salesforge.ai/mcp | API key API key, generated from the Mailforge dashboard. | Paid, self-serve |
| Make make.com | RevOps Infra | https://mcp.make.com +2 more | OAuth or an API key Two supported methods - OAuth via Make's cloud (endpoint mcp.make.com) or an MCP Token... | Paid, self-serve |
| Metorial metorial.com | MCP Layer | https://github.com/metorial/metorial +1 more | OAuth or an API key Fully custodial - Metorial stores and centrally manages OAuth tokens for every connected... | Paid, self-serve |
| Microsoft Dynamics 365 Sales microsoft.com | RevOps Infra | https://agent365.svc.cloud.microsoft/mcp/environment... +1 more | Auth not recorded enterprise gate. Microsoft Entra identity; the documented prerequisites are admin... | Paid, self-serve |
| Mixmax mixmax.com | Engagement & Outbound | https://mcp.mixmax.com/mcp +2 more | OAuth OAuth 2.0 authorization code flow, scoped to the connecting user's account. Read-only. | Paid, self-serve |
| Nutshell CRM nutshell.com | RevOps Infra | https://app.nutshell.com/mcp +1 more | OAuth oauth. The vendor's article instructs the user to add the server URL as a custom... | Paid, self-serve |
| Ocean.io ocean.io | Data & Enrichment | https://app.ocean.io/docs/getting-started/mcp +1 more | API key api key (api-token passed as a URL parameter to the hosted MCP endpoint) | Paid, self-serve |
| Octave octavehq.com | RevOps Infra | https://docs.octavehq.com/mcp/overview +3 more | OAuth or an API key Browser OAuth. Per the vendor's Claude Code setup doc you add the server with "claude mcp... | Paid, self-serve |
| Offorte offorte.com | Proposals & Deals | https://github.com/offorte/offorte-mcp-server +2 more | API key api key. The repo README lists an "Offorte API Key (see Authentication Section of the... | Paid, self-serve |
| Ortto ortto.com | RevOps Infra | https://mcp-api-us.ortto.app/mcp +1 more | Auth not recorded A scoped JWT key created as an MCP data source inside the Ortto account, passed as a... | Paid, self-serve |
| PhantomBuster phantombuster.com | Engagement & Outbound | https://hub.phantombuster.com/docs/mcp-server +1 more | OAuth OAuth - first connection redirects to PhantomBuster sign-in/authorization, then workspace... | Paid, self-serve |
| Pipedream MCP pipedream.com | MCP Layer | https://mcp.pipedream.com | OAuth or an API key OAuth/API-key credentials for each underlying app are stored by Pipedream and isolated... | Paid, self-serve |
| RB2B rb2b.com | Signals & Intent | https://registry.npmjs.org/@rb2b/rb2b-apis-mcp | API key api key | Paid, self-serve |
| Reply.io reply.io | Engagement & Outbound | https://reply.io/mcp/ +1 more | API key api key (personal API key over HTTPS, included in free trial) | Paid, self-serve |
| Reply.io (Jason AI) reply.io | AI SDRs | https://reply.io/mcp/ +2 more | OAuth or an API key Personal API key (vendor-recommended, sent as a Bearer token, scoped to the permissions... | Paid, self-serve |
| Responsive (formerly RFPIO) responsive.io | Proposals & Deals | https://www.responsive.io/capability/mcp-server +2 more | Auth not recorded unknown - not detailed in the sources reviewed. | Paid, self-serve |
| RingCentral App Connect MCP ringcentral.com | Engagement & Outbound | https://unified-crm-extension.labs.ringcentral.com/m... +3 more | OAuth oauth plus a second, separate CRM link. The docs describe a two-layer model: RingCentral... | Paid, self-serve |
| RocketReach rocketreach.co | Data & Enrichment | https://rocketreach.co/resources/products/mcp/ +1 more | OAuth OAuth 2.1, browser-based; ties to your existing RocketReach account and shares its credit... | Paid, self-serve |
| Salesforge salesforge.ai | Engagement & Outbound | https://github.com/SalesforgeAI/forge-mcp | API key api key via HTTP header (X-Salesforge-Key) | Paid, self-serve |
| Salesforge (Agent Frank) salesforge.ai | AI SDRs | https://mcp.salesforge.ai/mcp +2 more | Auth not recorded unknown specifics (help article confirms an official MCP server "to connect with AI... | Paid, self-serve |
| Saleshandy saleshandy.com | Engagement & Outbound | https://mcp.saleshandy.com/mcp +3 more | OAuth or an API key oauth, with an api key fallback. The developer docs state "Saleshandy MCP uses OAuth for... | Paid, self-serve |
| SalesQL salesql.com | Data & Enrichment | https://mcp.salesql.com/mcp +2 more | OAuth or an API key oauth. The vendor's docs record "Auth OAuth 2.1" with an MCP key as the fallback for... | Paid, self-serve |
| Skyp.ai skyp.ai | Engagement & Outbound | https://api.skyp.ai/mcp +3 more | OAuth or an API key api key (X-API-Key or Authorization Bearer header) or OAuth. The endpoint's own 401 body... | Paid, self-serve |
| Smartlead smartlead.ai | Engagement & Outbound | https://helpcenter.smartlead.ai/en/articles/300-smar... +3 more | API key api key, passed as the user_api_key query parameter on the SSE endpoint URL; SSE... | Paid, self-serve |
| Snitcher snitcher.com | Signals & Intent | https://app.snitcher.com/mcp/snitcher +1 more | Auth not recorded unknown - vendor changelog points to docs.snitcher.com for authentication specifics, not... | Paid, self-serve |
| Snov.io snov.io | Data & Enrichment | https://mcp.snov.io/mcp +1 more | OAuth OAuth - user reviews and approves the connection through their Snov.io account; no raw... | Paid, self-serve |
| SparkToro sparktoro.com | Community & Dark Social | https://sparktoro.com/mcp +1 more | OAuth OAuth (one-click sign-in with an existing SparkToro account); documented to work with... | Paid, self-serve |
| Sumble sumble.com | Signals & Intent | https://mcp.sumble.com/ +3 more | Auth not recorded unknown - the MCP overview page documents one-click install from the Claude and ChatGPT... | Paid, self-serve |
| Super Send supersend.io | Engagement & Outbound | https://mcp.supersend.io/mcp +1 more | API key api key, Streamable HTTP transport | Paid, self-serve |
| Superblocks superblocks.com | RevOps Infra | https://api.superblocks.com/mcp +1 more | OAuth unknown - the announcement doesn't specify the auth method; the feature is... | Paid, self-serve |
| The Swarm theswarm.com | Data & Enrichment | https://bee.theswarm.com/mcp +1 more | OAuth or an API key OAuth via personal Swarm login (native Claude and ChatGPT app connectors) or team API key... | Paid, self-serve |
| tl;dv tldv.io | Conversation Intel | https://github.com/tldv-public/tldv-mcp-server +1 more | API key API key generated at Settings → Personal Settings → API keys. | Paid, self-serve |
| Trainual trainual.com | Enablement & Coaching | https://help.trainual.com/en/the-trainual-mcp-server +1 more | API key Bearer MCP token in the Authorization header; the help article states "Only those with an... | Paid, self-serve |
| Typeform typeform.com | Inbound & PLG Chat | https://api.typeform.com/mcp +2 more | OAuth oauth. The docs state "Authorization is OAuth 2.0, and your client is prompted on first... | Paid, self-serve |
| Vainu vainu.com | Data & Enrichment | https://mcp.vainu.ai/mcp +2 more | OAuth OAuth 2.0 with PKCE, scoped to existing Vainu permissions, but NOT enabled by default.... | Paid, self-serve |
| Vayne vayne.io | Data & Enrichment | https://mcp.vayne.io/mcp +1 more | OAuth or an API key oauth or api key. The vendor's docs state OAuth is the default for Claude Desktop,... | Paid, self-serve |
| Versium REACH versium.com | Data & Enrichment | https://app.versium.com/mcp/reach +2 more | OAuth OAuth, and the client must support dynamic client registration. | Paid, self-serve |
| Waalaxy waalaxy.com | Engagement & Outbound | https://docs.waalaxy.com/mcp-server +1 more | OAuth or an API key user-based OAuth 2.1 via magic-link sign-in; vendor docs explicitly state bearer API keys... | Paid, self-serve |
| Wiza wiza.co | Data & Enrichment | https://mcp.wiza.co/mcp +2 more | OAuth or an API key OAuth 2.1 with PKCE for clients that support it, otherwise a static bearer token in the... | Paid, self-serve |
| Woodpecker woodpecker.co | Engagement & Outbound | https://github.com/Woodpeckerco/woodpecker-mcp-serve... +2 more | OAuth or an API key hosted OAuth-style flow (Claude-specific) or self-hosted Docker setup using a Woodpecker... | Paid, self-serve |
| Zoho CRM zoho.com | RevOps Infra | https://www.zoho.com/crm/developer/mcp.html | OAuth oauth. The vendor's page describes a four-step setup ending in "Authenticate via OAuth.... | Paid, self-serve |
| Amplemarket amplemarket.com | Engagement & Outbound | https://mcp.amplemarket.com/mcp +3 more | OAuth OAuth 2.0 sign-in with the Amplemarket account in the browser; the knowledge article says... | Enterprise leaning |
| Clari clari.com | Conversation Intel | https://mcp.clari.com/mcp +1 more | Auth not recorded unknown / not disclosed publicly | Enterprise leaning |
| Dialpad dialpad.com | Engagement & Outbound | https://mcp-public.us.karehq.com/mcp +3 more | OAuth oauth. The docs state the server is hosted by Dialpad, supports Dynamic Client... | Enterprise leaning |
| Harmonic harmonic.ai | Data & Enrichment | https://mcp.api.harmonic.ai +1 more | OAuth or an API key oauth. The server publishes OAuth protected-resource metadata at... | Enterprise leaning |
| Paragon (ActionKit MCP) useparagon.com | MCP Layer | https://github.com/useparagon/paragon-mcp +1 more | OAuth Paragon user token plus Connect Portal OAuth. The distinguishing feature is that the... | Enterprise leaning |
| SigParser sigparser.com | Data & Enrichment | https://ipaas.sigparser.com/api/mcp | API key unknown. The endpoint answers HTTP 401 to an unauthenticated MCP initialize but no... | Enterprise leaning |
| Sybill sybill.ai | Conversation Intel | https://mcp.sybill.ai/mcp +1 more | OAuth Browser-based sign-in / OAuth on first connection from an MCP client such as Claude... | Enterprise leaning |
| 6sense 6sense.com | Signals & Intent | https://6sense.com/platform/mcp-server/ +1 more | OAuth OAuth using existing 6sense platform login (no separate API key setup per vendor docs) | Enterprise only |
| Ada ada.cx | Inbound & PLG Chat | https://docs.ada.cx/_mcp/server +1 more | Auth not recorded none documented - connects over HTTP with no credential requirement described in the docs. | Enterprise only |
| Anaplan (PlanIQ / Anaplan Forecaster) anaplan.com | Forecasting & Revenue | https://www.anaplan.com/platform/intelligence/ +1 more | OAuth or an API key unknown - described only as a "governed MCP connection" with permission/audit controls;... | Enterprise only |
| Apollo.io Sequences (Emailer Campaigns) apollo.io | Engagement & Outbound | https://github.com/apolloio/apollo-mcp-plugin +1 more | OAuth OAuth (Apollo.io sign-in/authorization flow; no API key required for this MCP) | Enterprise only |
| Artisan AI (Ava) artisan.co | AI SDRs | https://www.artisan.co/mcp | Auth not recorded none required - a JSON-RPC initialize POST to the endpoint with no credentials answered... | Enterprise only |
| Clari (+ Salesloft agents) clari.com | AI SDRs | https://mcp.clari.com/mcp +1 more | Auth not recorded unknown - announcement confirms an official MCP server (works with Claude, ChatGPT,... | Enterprise only |
| Common Room commonroom.io | Signals & Intent | https://www.commonroom.io/docs/using-common-room/mcp... +1 more | OAuth oauth (OAuth 2.1, browser-based, tokens scoped to the user's own Common Room permissions) | Enterprise only |
| Common Room commonroom.io | Community & Dark Social | https://www.commonroom.io/docs/using-common-room/mcp... +1 more | OAuth oauth (OAuth 2.1, browser-based, tokens scoped to the user's own Common Room permissions) | Enterprise only |
| Crossbeam crossbeam.com | Signals & Intent | https://mcp.crossbeam.com/mcp +1 more | OAuth OAuth with Crossbeam login credentials, with a permission consent screen at connect time. | Enterprise only |
| Crunchbase crunchbase.com | Data & Enrichment | https://mcp.crunchbase.com +2 more | OAuth OAuth 2.1. The user signs in with their normal Crunchbase account in the AI client's... | Enterprise only |
| Demandbase (Demandbase One) demandbase.com | Signals & Intent | https://developer.demandbase.com/docs/mcp +1 more | Auth not recorded unknown - the account-team-gated support article that likely covers this returned HTTP... | Enterprise only |
| G2 Buyer Intent g2.com | Signals & Intent | https://mcp.g2.com/mcp +2 more | OAuth OAuth 2.0 Authorization Code with PKCE. You register an OAuth app in the G2 Developer... | Enterprise only |
| Gong gong.io | Conversation Intel | https://help.gong.io/docs/about-gong-mcp +2 more | Auth not recorded Official MCP client+server ships as part of Gong's enterprise agent stack (used to... | Enterprise only |
| HG Insights (Phoenix platform) hginsights.com | Signals & Intent | https://learn.microsoft.com/en-us/connectors/hginsig... | API key api key (`x-api-key` header; throttled to 100 calls/60 seconds per connection) | Enterprise only |
| Highspot highspot.com | Conversation Intel | https://mcp.highspot.com/mcp +1 more | Auth not recorded unknown - product page describes agent-to-agent access via OpenAI, Anthropic, and... | Enterprise only |
| Ironclad ironcladapp.com | Proposals & Deals | https://support.ironcladapp.com/hc/en-us/articles/39... +1 more | Auth not recorded unknown - a single, static MCP endpoint per the support article; specific credential... | Enterprise only |
| Looker cloud.google.com | RevOps Infra | https://docs.cloud.google.com/looker/docs/mcp +3 more | OAuth The managed server uses OAuth 2.1 and an admin "must manually register AI agents as OAuth... | Enterprise only |
| MadKudu madkudu.com | AI SDRs | https://developers.madkudu.com/madkudu-mcp/install-i... +2 more | API key MadKudu API key embedded in the endpoint path; the portal states "Please contact HG... | Enterprise only |
| mcp.run / TurboMCP turbomcp.ai | MCP Layer | https://github.com/dylibso/mcp.run-servlets +1 more | OAuth Integrates with a team's own OIDC-compatible identity provider; handles OAuth and Dynamic... | Enterprise only |
| Meltwater meltwater.com | Community & Dark Social | https://developer.meltwater.com/guides/meltwater-mcp... +1 more | OAuth or an API key Meltwater API token today, "with OAuth 2.0 planned for later this year" per the vendor... | Enterprise only |
| Nooks nooks.ai | Engagement & Outbound | https://mcp.nooks.in/mcp +1 more | OAuth OAuth 2.0 authorization code with PKCE (S256), issuer https://oauth.nooks.in, per the... | Enterprise only |
| Otter.ai otter.ai | Conversation Intel | https://mcp.otter.ai/mcp +3 more | Auth not recorded unknown - exact auth mechanism not confirmed in public sources; framed under "Otter for... | Enterprise only |
| Outreach outreach.ai | Engagement & Outbound | https://api.outreach.io/mcp/ +1 more | OAuth OAuth 2.1 with Dynamic Client Registration; also requires the org-level "Amplify" add-on... | Enterprise only |
| Pigment pigment.com | Forecasting & Revenue | https://www.pigment.com/ai/mcp-server +2 more | Auth not recorded A workspace admin enables MCP under Settings > Integrations, generating a per-workspace... | Enterprise only |
| Salesforce (core CRM/platform) + Agentforce salesforce.com | RevOps Infra | https://github.com/salesforcecli/mcp +2 more | OAuth OAuth + PKCE via an External Client App (scopes mcp_api, refresh_token); every MCP call... | Enterprise only |
| Salesloft salesloft.com | Engagement & Outbound | https://mcp.salesloft.com/mcp +2 more | OAuth unknown exact flow - vendor press material describes it as natively listed in Claude's... | Enterprise only |
| Seamless.AI seamless.ai | Data & Enrichment | https://mcp.seamless.ai/mcp +1 more | OAuth or an API key OAuth 2.1 or API key; docs state "MCP access must be enabled on your account" - i.e.... | Enterprise only |
| Seismic seismic.com | Conversation Intel | https://mcp.seismic.com/ +1 more | OAuth or an API key Streamable HTTP transport per Seismic's MCP documentation; the specific credential type... | Enterprise only |
| Showpad showpad.com | Enablement & Coaching | https://mcp.showpad.com/mcp/v1 +2 more | OAuth OAuth; the docs say each end user authenticates with their own Showpad credentials and... | Enterprise only |
| Similarweb similarweb.com | Signals & Intent | https://mcp.similarweb.com +3 more | OAuth or an API key CONFLICTING VENDOR STATEMENTS, flagged rather than resolved. Both Similarweb developer... | Enterprise only |
| Surfe surfe.com | Data & Enrichment | https://mcp.eu.surfe.com/mcp +1 more | API key Surfe API key, with a browser sign-in flow that exchanges the key for a managed token so... | Enterprise only |
| Syncari syncari.com | RevOps Infra | https://mcp.syncari.com/mcp +1 more | OAuth or an API key unknown - the MCP server page describes real-time, entity/field-level access control and... | Enterprise only |
| Talkwalker (rebranded: Lumen by Talkwalker) talkwalker.com | Community & Dark Social | https://mcp.hootsuite.com/lumen +1 more | Auth not recorded Sign in with a Hootsuite workspace when prompted; the Hootsuite MCP page says... | Enterprise only |
| UserGems usergems.com | Signals & Intent | https://www.usergems.com/product/mcp | OAuth or an API key unknown - connects inside Claude/ChatGPT per the product page, but the exact auth... | Enterprise only |
| Actively actively.ai | Signals & Intent | https://app.actively.ai/docs/mcp +2 more | OAuth oauth. The vendor docs state "MCP access uses OAuth 2.1 with WorkOS." Tools are... | Gate unknown |
| Endgame endgame.io | Inbound & PLG Chat | https://app.endgame.io/api/v1/mcp +1 more | OAuth or an API key OAuth (browser-based) for individual users via Claude/ChatGPT/Claude Code/Codex... | Gate unknown |
| GTM Signals andrewcmcguire.com | Signals & Intent | https://mcp.gtmsignals.co/mcp | API key api key, sent as `Authorization: Bearer gtms_...`. Streamable HTTP, stateless, protocol... | Gate unknown |
| Klavis AI klavis.ai | MCP Layer | https://www.klavis.ai/docs/concepts/strata.md +2 more | OAuth or an API key Klavis API key as an HTTP Bearer token on the management API that creates a per-user... | Gate unknown |
| Pylon usepylon.com | Inbound & PLG Chat | https://mcp.usepylon.com +1 more | OAuth OAuth 2.0 over stateless streamable HTTP; access is permission-scoped so a connected AI... | Gate unknown |
| Reclaim.ai reclaim.ai | Scheduling & Routing | https://mcp.reclaim.ai | OAuth or an API key OAuth (official hosted server). A separate unofficial/community server also exists... | Gate unknown |
| RevenueHero revenuehero.io | Scheduling & Routing | https://www.revenuehero.io/resources/tales-of-ops | API key Per-customer router token over an SSE endpoint, manually provisioned by RevenueHero - not... | Gate unknown |
| Trumpet sendtrumpet.com | Video Prospecting | https://trumpet.app/api/mcp +2 more | OAuth OAuth 2.0 - vendor help-center doc confirms "Authenticate via trumpet (OAuth 2.0)"; setup... | Gate unknown |
| Zoom Revenue Accelerator zoom.com | Conversation Intel | https://news.zoom.com/zoom-revenue-accelerator-mcp-c... +1 more | OAuth or an API key OAuth - Zoom user-level OAuth access token (env var... | Gate unknown |
Counted 2026-09-27 from directory.json and reconciled against tools_recount.py. Nothing on this page is hand maintained: it is a filter over the same 1,252 entries the rest of the site is built from. Ordered by the published rule: official MCP first, then community, then unknown, then n/a, then none-found; within each band gate order is free, paid, enterprise-leaning, enterprise-only, unknown; then alphabetical by name. Computed, never curated, never purchasable.