Promise MCP Server

by usepromise Your server? Claim it

answering

Promise is answering right now. Last checked 5 min ago. It exposes 11 tools. Last commit 22 Sep 2026.

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

Uptime history 20 hours of history

20 hours agonow

100.0%

Uptime 24h

74 of 74 checks

Tools

read from the server

358 ms

Response time

average over 24h

Stars

last commit 22 Sep 2026

Nothing serious here today

Today is the operative word: we check Promise every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 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

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "promise": {
      "url": "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

{
  "mcpServers": {
    "promise": {
      "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	487 ms	5 min ago

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same job, measured the same way

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Provena Agent Memory

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Evidence-backed, explainable persistent memory for MCP-compatible AI agents.

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You are ephemeral; this remembers. Persist watch_id+key; poll later for what you missed.

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Trail

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Issue tracker and durable project memory for your coding agent, scoped to the folder you open.

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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 74 of 74 checks got a reply (100.0%), average response time 358 ms. The bar chart above shows every period we have measured.

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 with the file path 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.

How fast is Promise?

It answers our handshake in 358 ms on average, which is faster than 50% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

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.