Attest MCP Remote MCP Server

by spazio-genesi Your server? Claim it

answering

Attest MCP Remote is answering right now. Last checked 11 min ago. It exposes 8 tools. Last commit 19 Aug 2026.

Zero-install remote MCP server for proof-of-existence file attestation.

Uptime history 47 days of history · worst day 97%

47 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

835 ms

Response time

average over 24h

Stars

last commit 19 Aug 2026

Nothing serious here today

Today is the operative word: we check Attest MCP Remote 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 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add attest-mcp-remote --transport http https://attest-mcp-remote.it-e3f.workers.dev/mcp

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

{
  "mcpServers": {
    "attest-mcp-remote": {
      "url": "https://attest-mcp-remote.it-e3f.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.attest-mcp-remote]
url = "https://attest-mcp-remote.it-e3f.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "attest-mcp-remote": {
      "url": "https://attest-mcp-remote.it-e3f.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "attest-mcp-remote": {
      "url": "https://attest-mcp-remote.it-e3f.workers.dev/mcp"
    }
  }
}

Available tools 8

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

anchor

check_anchor

Check whether a work's SHA-256 fingerprint has an OpenTimestamps proof anchored in Bitcoin. The proof is created at attestation time and matures (pending → Bitcoin-confirmed) within a few hours.

attest

attest_hash

Attest a work: the service binds the SHA-256 fingerprint to a server-side timestamp and signs it (HMAC). Requires a credential (device flow via `authorize`, or an API key header). Optional declared metadata (title/author/year/notes) are normalized and BOUND by the signature — immutable after issuance, but they remain self-declared (they don't prove authorship). Compute the SHA-256 locally if you have code execution (`sha256sum <file>` / `shasum -a 256 <file>` / `certutil -hashfile <file> SHA256`). NEVER send file bytes or base64 through tool arguments: this server never receives files. If you cannot compute a hash locally, point the user to the website (https://attestazione.spaziogenesi.org, full privacy: hashing happens in the browser) or the Telegram bot @SGAttestBot.

authorize

authorize

Start the device-flow authorization to attest works in this session (up to 20 attestations, 24h). Returns a link the USER must open in a browser and approve (anti-bot check included). After the user approves, call `complete_authorization`. Not needed if the connection already carries an API key header, or for verification tools.

certificate

create_certificate_pdf

Generate and archive the certificate PDF for a fingerprint attested in this session with `attest_hash`. The PDF is cryptographically signed, anchored in Bitcoin (OpenTimestamps) and archived server-side; this tool returns the permanent links (the PDF itself is downloadable from its URL — it is never inlined here).

complete

complete_authorization

Complete the device-flow authorization after the user approved in the browser. Polls the service briefly; if approval hasn't happened yet, just call this tool again.

lookup

lookup_certificate

Look up whether a work's SHA-256 fingerprint has an attestation certificate in the public archive, and get its permanent links (public certificate page, PDF download, OpenTimestamps proof, browser verification). Trust model: this information is reachable only by whoever knows the fingerprint.

service

service_status

Health of the Spazio Genesi attestation service components: worker (attestation engine), archive (certificate storage), signer (PDF cryptographic signature), anchor (Bitcoin/OpenTimestamps calendars). Values: ok | degraded | down | n/d.

verify

verify_attestation

Verify the server HMAC signature of an attestation issued by the Spazio Genesi service. Confirms that the attestation string (fingerprint + timestamp) and any declared metadata are authentic and untampered. Note: this checks the SIGNATURE only. Whether a given file matches the fingerprint must be checked locally by re-hashing the file. If the certificate carried declared metadata (title/author/year/notes), they must be provided EXACTLY as printed for the signature to verify.

Endpoints

URL	Transport	State	Latency	Checked
https://attest-mcp-remote.it-e3f.workers.dev/mcp	streamable-http	answering	652 ms	11 min ago

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Attest MCP Remote — questions

Answers built from our own checks of this server.

What can Attest MCP Remote do?

It exposes 8 tools, read directly from the server on our last check. Among them: attest_hash, authorize, check_anchor, complete_authorization, create_certificate_pdf, lookup_certificate and 2 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 Attest MCP Remote working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 835 ms. The bar chart above shows every period we have measured.

How do I connect Attest MCP Remote?

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 Attest MCP Remote need an API key?

No. Attest MCP Remote completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Attest MCP Remote?

It answers our handshake in 835 ms on average, which is faster than 13% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Attest MCP Remote open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.