Contribution Exchange

com.signalaf/contribution-exchangeVersion 1.0.0

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

Status

Responds324 msNov 14, 2026, 14:15 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:15 UTC
Latency: 324 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://signalaf.com/api/exchange/mcpResponds324 msNov 14, 2026, 14:15 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: contribution-exchange
Remote MCP server URL: https://signalaf.com/api/exchange/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"contribution-exchange","type":"http","url":"https://signalaf.com/api/exchange/mcp"}'

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Tools

6 tools

Tools of Contribution Exchange
	Description		Read-only	Idempotent	Open world
`exchange_discover_domain`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, timeouts, and SSRF protections (blocks loopback, link-local, private-network, and metadata-service targets).	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, timeouts, and SSRF protections (blocks loopback, link-local, private-network, and metadata-service targets).	No	Yes	Yes	Yes
`exchange_get_attempt`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.	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.	No	Yes	Yes	No
`exchange_get_policy`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 unavailable service.	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 unavailable service.	No	Yes	Yes	Yes
`exchange_get_signal`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.	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.	No	Yes	Yes	Yes
`exchange_list_signals`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 authorize execution. Supports the same filters and pagination as the HTTP API.	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 authorize execution. Supports the same filters and pagination as the HTTP API.	No	Yes	Yes	Yes
`exchange_preflight`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 state transition. The result is advisory and time-bound — a favorable preflight does NOT guarantee engagement, Commitment, authorization, payment, or execution. Uses the same evaluateProposal function as the canonical proposal route.	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 state transition. The result is advisory and time-bound — a favorable preflight does NOT guarantee engagement, Commitment, authorization, payment, or execution. Uses the same evaluateProposal function as the canonical proposal route.	No	Yes	Yes	No

Details

Registry status: Active
Published: Aug 26, 2026
Updated: Aug 26, 2026
Website: https://signalaf.com/exchange⁠ (opens in a new tab)
Repository: https://github.com/SunrisesIllNeverSee/sigrank-app⁠ (opens in a new tab)
Categories: Uncategorized
GDPR: Not declared

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