generated: '2026-08-12'
method: probed
source: https://mcp.channel99.com/.well-known/oauth-protected-resource
docs:
- https://support.channel99.com/hc/en-us/articles/46757387781275-Channel99-MCP-Server-Information
- https://support.channel99.com/hc/en-us/articles/47105598392475-MCP-Server-General-FAQ
- https://support.channel99.com/hc/en-us/articles/47096482901275-Channel99-Connection-to-Anthropic-Claude
- https://www.channel99.com/articles/mcp-server-for-performance-marketing
name: Channel99 MCP Server
status: live
hosted: true
vendor_operated: true
description: Channel99 operates a first-party, remote Model Context Protocol server that exposes its B2B
  marketing performance data - website visits, pixel impressions, vendor and channel scores, audiences,
  account identity and pipeline influence - to an external LLM. The support documentation describes it
  as a read-only, OAuth-secured connector, and the January 2026 product release adds a "guarded SQL-backed
  data interface" so a model can formulate runnable queries against the customer's own tables. Channel99
  publicly markets connectors for OpenAI ChatGPT (generally available) and Anthropic Claude (beta).
endpoints:
- transport: streamable-http
  url: https://mcp.channel99.com/mcp
  method: POST
  observed_status: 401
  observed_body: '{"jsonrpc":"2.0","error":{"code":-32000,"message":"Missing Bearer token","rpcId":1}}'
  note: A real JSON-RPC error envelope, not an HTML shell - this confirms a live MCP endpoint that requires
    an OAuth bearer token before tools/list will answer.
- transport: websocket
  url: wss://mcp.channel99.com/ws
  note: 'WebSocket transport used by the in-product AI assistant. Read out of the published app.channel99.com
    JavaScript bundle, which constructs the socket with the Stytch session_jwt as the subprotocol and
    identifies the client as {name: "Channel99", version: "1.0.0"}.'
- transport: http
  url: https://mcp.channel99.com/health
  method: GET
  observed_status: 200
  observed_body: '{"success":true}'
authentication:
  standard: OAuth 2.1
  source: https://support.channel99.com/hc/en-us/articles/47105598392475-MCP-Server-General-FAQ
  protected_resource_metadata: https://mcp.channel99.com/.well-known/oauth-protected-resource
  authorization_server_metadata: https://mcp.channel99.com/.well-known/oauth-authorization-server
  issuer: https://api.stytch.app.channel99.com
  authorization_endpoint: https://app.channel99.com/oauth/authorize
  token_endpoint: https://api.stytch.app.channel99.com/v1/oauth2/token
  scopes_supported:
  - openid
  - email
  - profile
  grant_types_supported:
  - authorization_code
  - refresh_token
  code_challenge_methods_supported:
  - S256
  token_endpoint_auth_methods_supported:
  - none
  dynamic_client_registration: false
  client_id_metadata_document_supported: true
  identity_provider: Stytch (api.stytch.app.channel99.com, a Channel99-controlled subdomain)
url_model: universal
url_model_note: The MCP Server General FAQ states the MCP URL is a single universal URL rather than a
  per-tenant URL; tenant scoping is carried by the OAuth token.
permissions:
  read: true
  write: false
  source: '"What Read/Write Permissions does the MCP connection have to the Channel99 databases? Read
    Only" - MCP Server General FAQ.'
privacy:
  personal_data_shared: false
  note: Channel99 states no contact names, emails, usernames or passwords cross the MCP connection; all
    data is shared at the company/domain level. Data is segregated database-per-customer.
clients_supported:
- name: OpenAI ChatGPT
  status: generally-available
- name: Anthropic Claude
  status: beta
- name: Microsoft Copilot
  status: announced
  source: https://www.prnewswire.com/news-releases/channel99-connects-marketing-intelligence-data-to-genai-platforms-enabling-a-new-generation-of-marketing-clouds-302696445.html
tools:
  enumerated: false
  count: null
  reason: tools/list is OAuth-gated - an anonymous JSON-RPC tools/list returns HTTP 401 {"code":-32000,"message":"Missing
    Bearer token"}. Channel99 publishes no tool manifest, llms.txt tool list or connector directory listing
    with tool names, so the tool names and inputSchemas cannot be recorded without an authenticated introspection.
    NOT DERIVED AND NOT GUESSED - see mcp/channel99-tool-crosswalk.yml for the surfaces that are readable.
  data_surface_documented: true
  data_surface_note: 'Channel99 does document WHAT the MCP server can reach, if not the tool signatures:
    the FAQ and the MCP Server Information article both say the MCP services are built over the same schema
    published in the Snowflake Data Share documentation (fact tables Visit, Pageview, Impression plus
    the ad/audience/company/vendor/channel dimension tables), which is the same entity set the Pulsar
    REST API exposes.'
error_codes_observed:
- code: err:mcp.internal-server-error
  source: app.channel99.com JavaScript bundle
- code: err:mcp.auth-failure
  source: app.channel99.com JavaScript bundle
- code: err:mcp.unknown-route
  source: app.channel99.com JavaScript bundle
- code: rate_limit_exceeded
  source: app.channel99.com JavaScript bundle
x-evidence:
  fetched: '2026-08-12'
  probes:
  - url: https://mcp.channel99.com/mcp
    method: POST
    body: '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
    status: 401
  - url: https://mcp.channel99.com/health
    status: 200
  - url: https://mcp.channel99.com/.well-known/oauth-protected-resource
    status: 200
  - url: https://mcp.channel99.com/.well-known/oauth-authorization-server
    status: 200
  - url: https://mcp.channel99.com/
    status: 404
deployment:
  mode: unclear
  verified: searched
  checked: '2026-08-12'
  source: catalog MCP census