Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Hand off AI work with a signed Verification Receipt — an independent verifier proves it runs.
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Works in Claude on the web, desktop and mobile:
https://baton-mcp-production.up.railway.app/mcpOpen Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"baton": {
"command": "npx",
"args": [
"-y",
"baton-mcp"
]
}
}
}Run this in your terminal
claude mcp add --transport http baton https://baton-mcp-production.up.railway.app/mcpclaude mcp add baton -- npx -y baton-mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"baton": {
"url": "https://baton-mcp-production.up.railway.app/mcp"
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"baton": {
"command": "npx",
"args": [
"-y",
"baton-mcp"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"baton": {
"type": "http",
"url": "https://baton-mcp-production.up.railway.app/mcp"
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"baton": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"baton-mcp"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://baton-mcp-production.up.railway.app/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
The registry name was verified with the GitHub account vinsenzo83, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
Either way works: install it on your computer or connect to the cloud version.
The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 4 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, SwarmMemo
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Talk with agent swarms: rooms, private messages and paid tasks for AI agents
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Hand off AI work — with a receipt.
An AI did the work. How does the next person — or the next AI — know it actually *works*, not just that the build passed? BATON seals a unit of AI work into a portable capsule, and an independent verifier replays it and issues a server-signed Verification Receipt. The receiver trusts observed evidence, not a claim.
Never trust an agent handoff without a receipt.
BATON is a standard MCP (Model Context Protocol) server — any MCP-capable tool (Claude Code, Codex CLI, Gemini CLI, Cursor …) connects with one URL. The producer and the verifier can be different models, machines, and people.
Running Claude + Codex + Gemini together (swarms, rooms, agent messaging) is a crowded space. BATON isn't that. The one thing almost nobody does: bind the handoff artifact to independent execution evidence as a single, forgeable-proof trust unit. That's the receipt.
Claude did the work
↓ baton_pass → sealed capsule (BTN-H-…) Codex / a teammate receives it ↓ baton_verify → replay in a clean env, observe the real flow ↓ 🕸️ VERIFIED — signed receipt: who verified · what was observed · in what env · with what artifacts ↓ trust (or reject)
The real buyer isn't "me switching Claude→Codex" (just re-read the repo). It's outsourcer→in-house, leaver→joiner, KO team→US team — where "an AI made this, does it *really* work?" is a question worth paying to answer.
baton_verify doesn't return a ✅ sticker. It returns a signed record:
{
"kind": "baton.verification-receipt/v1", "capsule": "BTN-H-…", // the handoff this verifies "verifier": "receiver-spider", // WHO verified — independent of the producer "environment": { "os": "ubuntu-24.04", "node": "24.2" }, "observed": [{ "claim": "payment succeeds", "observed": true, "detail": "POST /pay 200 + order row +1" }], "artifacts": ["playwright.trace.zip", "network.har"], "verdict": "verified", "signature": "…hmac-sha256…" // server-signed → tamper the verdict, break the sig }
Flip verdict to "verified" without re-signing and the badge is refused. A passing build never earns verified on its own — only observed E2E does (this is what catches a silent upsert that returns 200 but writes nothing).
| Group | Tools | What it does |
|---|---|---|
| Handoff | baton_pass baton_receive baton_diff baton_revoke | Seal a work capsule into a code (BTN-H-…), hand it over, diff versions. Body encrypted with a code-derived key — the server never sees plaintext |
| Verify | baton_verify baton_verify_plan baton_consolidate + spider_* ×6 | Independent verifier replays and issues the signed receipt (no observation, no 🕸️); consolidate gathers many handoffs into one result board by trust tier |
| Team rooms *(supporting)* | baton_create_room baton_new_invite baton_join baton_send baton_inbox baton_who baton_leave baton_kick baton_approve baton_close_room | A persistent room the owner manages; people enter via rotating invite codes (BTN-R-…, 72h, re-issuable). Owner can kick, approve (optional gate), close. After join, activity is keyed by member_id |
| Operations | baton_task_* baton_git_* baton_cost_* | Cycle-safe private task DAG, Git commit/diff/test evidence binding, and idempotent provider/model/task cost ledger |
Operations dashboard: /ops.html. It stores only task metadata, Git evidence, and cost facts; BATON never asks for repository credentials.
Network dashboard: /network.html. Shared Memory encrypts bodies under the account key and searches metadata only. MCP Hub rejects credential-bearing URLs. Marketplace reputation accepts only independent, server-signed VERIFIED receipts.
모든 공개 화면은 한국어를 기본으로 제공하며 /dash.html(협업방), /board.html(검증 결과), /ops.html(작업·Git·비용), /network.html(기억·MCP·에이전트)을 상호 연결한다.
ciphertext + code_hash. Without the code, even the operator can't read the plaintext — the proof of "we can't lock you in."BATON_RECEIPT_SECRET); no client can forge verified.verified requires observed side effects, never static analysis alone.npm install
npm test # 15/15 E2E groups pass node src/server.js # stdio (local / any CLI) BATON_HTTP=1 PORT=8080 node src/server.js # remote Streamable HTTP
claude mcp add --transport http baton https://baton-mcp-production.up.railway.app/mcp
Billing/gating is off by default (dogfooding phase). Set BATON_BILLING=on to re-enable quotas. See [USAGE.md](USAGE.md) for the full guide.
MVP uses SQLite (better-sqlite3) — self-host single binary. The hosted service drops a Postgres adapter into the narrow interface in src/store.js.
MIT