Matt MCP
Remote MCP · Streamable HTTP

Add Matt MCP to Codex

Matt MCP exposes three tools — analyze_business, get_analysis and propose_page_update — that call the same engine and persisted results as this app.

MCP endpoint

https://matt-mcp.com/mcp

No token needed. Free use allows 3 new live investigations per caller per day. Adding Authorization: Bearer <workspace token> lifts the limit.

Codex

CLI and IDE extension · Streamable HTTP
  1. 1Run this once:
    codex mcp add matt-mcp --url https://matt-mcp.com/mcp
    Or paste this into ~/.codex/config.toml:
    [mcp_servers.matt-mcp] url = "https://matt-mcp.com/mcp"
    Or paste this to Codex and let it set itself up:
    Connect me to matt-mcp: matt-mcp.com/mcp
  2. 2Start Codex, run /mcp and confirm matt-mcp lists three tools.
  3. 3Investigate the Lemon page:
    Use Matt MCP to investigate https://polarseltzer.com/lemon/ with live evidence. Goal: Help people discover the Lemon flavor and find where to buy it. Keep calling analyze_business with the returned run_id until it finishes, then call propose_page_update for the Lemon page. Show me the target URL, the proposed field changes, why, the sources, the open review items, and the proposal ID and revision.
  4. 4Refine it — the change is saved as a new revision:
    Use Matt MCP to refine the Lemon proposal (run_id "run_f90ad253500d"), proposal_revision 2: shorten the introduction while keeping the verified product facts and the store-finder link. Show what changed and the new revision.
  5. 5Hand it to the coding agent for the separate CMS project:
    Use the Matt MCP Lemon proposal (run_id "run_f90ad253500d") as an implementation brief for the separate CMS project. Call get_analysis to read the latest proposal revision and its implementation handoff, then update the existing rebuilt page at https://polar-website-migration.vercel.app/lemon/ with only the proposed field and content changes. Keep every verified product fact exactly as sourced, leave open review items unresolved and listed, then confirm the changes persist after a fresh reload.

Canonical Lemon proposal prop_runf90ad25_lemon · revision 2 · report · proposal · preview · JSON · Markdown

Claude Code

HTTP transport
  1. 1Run this once:
    claude mcp add --transport http matt-mcp https://matt-mcp.com/mcp
  2. 2Run /mcp in Claude Code and confirm matt-mcp lists three tools, then use the same three prompts as Codex.

Profound AI Marketer

Profound documents custom connectors at Integrations → Add custom connector. Paste the endpoint above. Whether your account accepts a bearer header (or requires OAuth) must be confirmed in the account itself — Matt MCP does not claim this connection until a real call from Profound is observed below.

This is separate from Matt MCP consuming Profound evidence. That uses the Profound Enterprise API with a server-only PROFOUND_API_KEY. Imported research is used only when no key is set.

Connection status

External assistant connection

Last request from codex-mcp-client 0.0.0-test (tools/call) at Oct 4, 2026, 12:16 AM UTC. Last tool call: get_analysis at Oct 4, 2026, 12:16 AM UTC.

Internal health check

Not run yet.

A passing health check proves the endpoint works. It is not the same as an external assistant connecting.

Sign in to run the connection test.