generated: '2026-07-20'
method: searched
status: published
source: https://docs.millimetric.ai/mcp-for-ai-agents/overview.md
description: 'Millimetric ships a first-class, hosted Model Context Protocol server. Any MCP client (Claude
  Code, Claude Desktop, MCP Inspector, custom agents) connects with a server-side key and uses the same
  operations a developer would. Two endpoints: /mcp (single project) and /mcp/account (multi-project,
  Business tier).'
servers:
- name: millimetric
  transport: http
  protocol: JSON-RPC 2.0 over HTTP
  url: https://api.millimetric.ai/mcp
  scope: One project per key.
  auth: Bearer rk_live_* (read) or sk_live_* (read+ingest). pk_/ak_ keys rejected (403 key_kind_not_allowed).
  plan: Pro+
- name: millimetric-account
  transport: http
  protocol: JSON-RPC 2.0 over HTTP
  url: https://api.millimetric.ai/mcp/account
  scope: Every project the account owns. Adds list_projects and compare_projects.
  auth: Bearer ak_live_* only (403 account_key_required otherwise).
  plan: Business
tools:
- name: track_event
  description: Emit an event (requires ingest scope, sk_* key).
  source_operation: openapi/millimetric-openapi.yml#trackEvent
- name: query_events
  description: Return raw events for a time range and optional filters (requires read).
  source_operation: openapi/millimetric-openapi.yml#queryEvents
- name: get_stats
  description: Aggregations (count / uniques) over events (requires read).
  source_operation: openapi/millimetric-openapi.yml#getStats
- name: top_sources
  description: Top sources/mediums including the FB social-vs-paid split (requires read).
  source_operation: openapi/millimetric-openapi.yml#getSources
account_tools:
- name: list_projects
  description: Every project the ak_ key can read. Account MCP only.
- name: compare_projects
  description: Rank every accessible project by a single metric. Account MCP only.
resources:
- uri: events://recent
  description: Last 100 events for the authenticated project.
- uri: schema://events
  description: Distinct event names observed in the last 30 days.
- uri: projects://all
  description: Every project the ak_ key can read (account MCP).
errors:
  envelope: JSON-RPC 2.0 error object
  codes:
  - code: -32600
    meaning: invalid_request
  - code: -32601
    meaning: method_not_found
  - code: -32602
    meaning: unknown_tool / unknown_resource / unhandled_tool
  - code: -32000
    meaning: tool_failed / insufficient_scope
  - code: -32002
    meaning: plan_limit (feature requires higher tier)
  - code: -32004
    meaning: unknown_project_id / unknown_project_slug (account MCP)
  - code: -32005
    meaning: no_projects_visible (account MCP)
client_config_example: "{\n  \"mcpServers\": {\n    \"millimetric\": {\n      \"url\": \"https://api.millimetric.ai/mcp\"\
  ,\n      \"transport\": \"http\",\n      \"headers\": { \"Authorization\": \"Bearer rk_live_...\" }\n\
  \    }\n  }\n}\n"
deployment:
  mode: remote
  endpoint: https://api.millimetric.ai/mcp
  verified: probed
  probe: gated
  checked: '2026-08-12'
  source: catalog MCP census