Contribution Exchange is a remote MCP server that gives an AI agent 6 tools, among them exchange_discover_domain, exchange_get_attempt, exchange_get_policy. It answers at https://signalaf.com/api/exchange/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 10 September 2026; the last check, on 19 October 2026, succeeded.
Contribution Exchange MCP: domain discovery, policies, preflight, proposals, and signals.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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, Inputs: domain |
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 Inputs: signal_id, attempt_id |
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 prefli Inputs: domain |
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 Inputs: signal_id |
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 e Inputs: domain, type, status, label, verification_mode, consideration_mode |
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 Inputs: domain, category, consideration, required_authorization, confidence |
Every block below points at https://signalaf.com/api/exchange/mcp. Pick your client and copy.
claude mcp add --transport http contribution-exchange https://signalaf.com/api/exchange/mcp
{
"mcpServers": {
"contribution-exchange": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://signalaf.com/api/exchange/mcp"]
}
}
}{
"mcpServers": {
"contribution-exchange": {
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"servers": {
"contribution-exchange": {
"type": "http",
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"context_servers": {
"contribution-exchange": {
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"mcpServers": {
"contribution-exchange": {
"serverUrl": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"mcpServers": {
"contribution-exchange": {
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}name: Contribution Exchange
version: 0.0.1
schema: v1
mcpServers:
- name: Contribution Exchange
type: streamable-http
url: https://signalaf.com/api/exchange/mcp{
"mcpServers": {
"contribution-exchange": {
"httpUrl": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"mcpServers": {
"contribution-exchange": {
"type": "http",
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}{
"mcpServers": {
"contribution-exchange": {
"url": "https://signalaf.com/api/exchange/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fsignalaf.com%2Fapi%2Fexchange%2Fmcp&type=streamable_http&id=contribution-exchange&name=Contribution%20Exchange
It answered our last check on 19 October 2026 in 864 ms. Over 6 checks since 10 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by signalaf.com and served from signalaf.com, the vendor's own domain: https://signalaf.com/api/exchange/mcp.
6, as returned by the server's own tools/list on 11 September 2026: exchange_discover_domain, exchange_get_attempt, exchange_get_policy, exchange_get_signal, exchange_list_signals, exchange_preflight.
It answered our last check on 19 October 2026 in 864 ms. Over 6 checks since 10 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://signalaf.com/api/exchange/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.signalaf. Endpoint host: signalaf.com. ARD identifier: urn:air:com.signalaf:mcp:contribution-exchange.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.