MCP server

Contribution Exchange

com.signalaf/contribution-exchange

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Contribution Exchange MCP: domain discovery, policies, preflight, proposals, and signals.

Website Source

At a glance

Type

MCP server

Publisher

signalaf.com (verified by the MCP Registry)

Status

Working at last check

Tools

6

Token cost

About 1,754 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http contribution-exchange https://signalaf.com/api/exchange/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.contribution-exchange]
url = "https://signalaf.com/api/exchange/mcp"

Gemini CLI

{"mcpServers":{"contribution-exchange":{"httpUrl":"https://signalaf.com/api/exchange/mcp"}}}

Cursor

{"mcpServers":{"contribution-exchange":{"url":"https://signalaf.com/api/exchange/mcp"}}}

VS Code

{"servers":{"contribution-exchange":{"type":"http","url":"https://signalaf.com/api/exchange/mcp"}}}

Antigravity

agy mcp add contribution-exchange https://signalaf.com/api/exchange/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"contribution-exchange","server_url":"https://signalaf.com/api/exchange/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"contribution-exchange","server_url":"https://signalaf.com/api/exchange/mcp"}

Tools

• exchange_discover_domain ~210 tokens
  Determine whether a domain publishes a Contribution Exchange profile. Returns the canonical Exchange manifest, policy URLs, signal URLs, and whether the domain is self-hosted or delegated to a Steward. Read-only — does not propose, commit, or authorize anything. Enforces HTTPS, redirect limits, time
• exchange_get_attempt ~180 tokens
  Get detail for a signal attempt. Read-only. Enforces attempt visibility — actors may only read their own private attempts. Returns attempt status and verification result if available. Attempt status is NOT an exchange state. Verification is Steward-controlled and cannot be self-asserted.
• exchange_get_policy ~162 tokens
  Fetch the canonical Contribution Exchange policy for a domain or its delegated Steward. Returns authority ceilings, consideration limits, human-review requirements, and supported behavior. Read-only — does not mutate state or perform preflight evaluation. Distinguishes a missing policy from an unava
• exchange_get_signal ~152 tokens
  Get full detail for a single Exchange Signal by ID. Read-only. Returns the complete signal including constraints, participation rules, verification configuration, consideration declaration, and follow-on behavior. A signal does NOT create a Commitment, authorize execution, or guarantee payment.
• exchange_list_signals ~487 tokens
  List domain-published Exchange Signals (problems, requests, challenges, bounties, verification tasks, discoveries, experiments). Read-only. Returns canonical URLs, signal revision, revision hash, and status. Signal status is DISTINCT from exchange status — a signal does not create a Commitment or au
• exchange_preflight ~563 tokens
  Evaluate a proposed contribution against the same policy logic used by the real proposal flow. Returns whether the proposal is likely to be auto-engaged, accepted for review, escalated to a human, or rejected as invalid. READ-ONLY: performs no proposal insertion, notification, event creation, or sta

Browse

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