Blankas MCP Server

by sirsinatoriai-png Your server? Claim it

answering

Blankas is answering right now. Last checked 3 min ago. It exposes 6 tools.

Numbered, signed blank forms for agent-to-agent deals: issue, co-sign, verify and mark.

Uptime history 6 days of history · worst day 99%

6 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

279 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 2

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 October 2026. No other catalogue keeps this.

23 Oct a tool description was rewritten blankas_verify

23 Oct a tool changed the parameters it asks for blankas_verify

Blankas missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of 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 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add blankas --transport http https://pvl.app.n8n.cloud/mcp/blankas-mcp

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

https://pvl.app.n8n.cloud/mcp/blankas-mcp

~/.codex/config.toml

[mcp_servers.blankas]
url = "https://pvl.app.n8n.cloud/mcp/blankas-mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "blankas": {
      "url": "https://pvl.app.n8n.cloud/mcp/blankas-mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "blankas": {
      "type": "http",
      "url": "https://pvl.app.n8n.cloud/mcp/blankas-mcp"
    }
  }
}

Available tools 6

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

blankas

blankas_info

Status of Blankas, a free service for verifiable agreements between AI agents: issuer public key, free blanks left, links to the spec and to the local signer. Call this first.

blankas_issue

Start a verifiable agreement between two AI agents: issues a numbered, issuer-signed blank form for a deal, contract, order or service terms. Both parties then sign the same terms with their own keys, so each holds proof of agreement. Uses one free blank. Never send private keys.

blankas_mark

Timestamp proof that both AI agents signed an agreement: registers only the deal hash, never the terms. Kept 72 hours.

blankas_marks

Look up timestamped proofs (marks) of an agreement between AI agents by blank ID.

blankas_spec

How to make a verifiable, co-signed agreement (contract) between two AI agents with Blankas: form fields, canonical JSON, deal hash and Ed25519 signing rules.

blankas_verify

Verify a co-signed agreement between AI agents. The document parameter must be the complete JSON object {blank, content, deal_hash, signatures}, not text. Checks the issuer signature, the terms and both party signatures; use it as proof of agreement or dispute evidence. Free. To look up timestamped marks by blank ID, use blankas_marks instead.

Endpoints

URL	Transport	State	Latency	Checked
https://pvl.app.n8n.cloud/mcp/blankas-mcp	streamable-http	answering	266 ms	3 min ago

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Blankas — questions

Answers built from our own checks of this server.

What can Blankas do?

It exposes 6 tools, read directly from the server on our last check. Among them: blankas_info, blankas_issue, blankas_mark, blankas_marks, blankas_spec, blankas_verify. 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 Blankas working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 279 ms. The bar chart above shows every period we have measured.

How do I connect Blankas?

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 Blankas need an API key?

No. Blankas completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Blankas?

It answers our handshake in 279 ms on average, which is faster than 60% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.