Promise MCP Server

by usepromise Your server? Claim it

not responding

Promise is listed as active in the registry but did not answer our last check. It exposes 11 tools. Last commit 6 Oct 2026.

Evidence-backed follow-through memory for what you owe, await, and need to remember.

Uptime history 48 days of history · worst day 0%

48 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

8000 ms

Response time

average over 24h

Stars

last commit 6 Oct 2026

Promise does not always answer

Over the last week it answered 50.6% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add promise --transport http https://mcp.usepromise.ai/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcp.usepromise.ai/mcp

~/.codex/config.toml

[mcp_servers.promise]
url = "https://mcp.usepromise.ai/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "promise": {
      "url": "https://mcp.usepromise.ai/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "promise": {
      "type": "http",
      "url": "https://mcp.usepromise.ai/mcp"
    }
  }
}

Available tools 11

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

commitment

get_commitment

Retrieve a structured Promise commitment or waiting-on item. Safety: Prefer structured status, due dates, people, and source links over raw mail.

get_commitment_evidence

Show why Promise believes a follow-up or memory exists. Safety: Return source summaries and citations permitted by the platform API.

capture

capture_note

Let a user tell Promise something to remember. Safety: Echo what Promise understood and require review when the platform requests it.

commitments

list_commitments

List what the user owes and what the user is waiting on. Safety: Do not infer more certainty than Promise returns.

connect

connect_promise

Return a Promise signup URL for users who want agent access to follow-up memory. Safety: Never collects provider credentials in the agent. Send the user to Promise.

draft

draft_follow_up

Draft a follow-up message without sending it. Safety: Do not send email in v1. Return a draft and Promise confirmation link.

create_follow_up

Create a future follow-up from explicit user intent. Safety: Only create follow-ups from explicit user instructions.

mark

mark_resolved

Tell Promise that a commitment or waiting-on item is complete. Safety: Confirm destructive or irreversible status changes in the agent UI.

memory

search_memory

Search Promise's derived memory with user authorization. Safety: Search derived Promise memory, not raw provider mailboxes.

person

get_person_context

Summarize what matters before the user speaks with someone. Safety: Avoid exposing hidden/private fields unless the platform scopes allow them.

today

get_today

Return what currently deserves the user's attention. Safety: Return concise items and links back to Promise for sensitive action.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.usepromise.ai/mcp	streamable-http	answering	8000 ms	15 min ago

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Promise — questions

Answers built from our own checks of this server.

What can Promise do?

It exposes 11 tools, read directly from the server on our last check. Among them: capture_note, connect_promise, create_follow_up, draft_follow_up, get_commitment, get_commitment_evidence and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Promise working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 8000 ms. The bar chart above shows every period we have measured.

The registry lists Promise as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Promise?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Promise need an API key?

No. Promise completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.

Is Promise open source?

We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.