MCP server

Groundcheck

io.github.beepboop2025/groundcheck

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Verify claims, resolve FIGI identity, extract claims, and sign x402 delivery receipts over MCP.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

5

Token cost

About 2,918 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http groundcheck https://groundcheck.seiche.info/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.groundcheck]
url = "https://groundcheck.seiche.info/mcp"

Gemini CLI

{"mcpServers":{"groundcheck":{"httpUrl":"https://groundcheck.seiche.info/mcp"}}}

Cursor

{"mcpServers":{"groundcheck":{"url":"https://groundcheck.seiche.info/mcp"}}}

VS Code

{"servers":{"groundcheck":{"type":"http","url":"https://groundcheck.seiche.info/mcp"}}}

Antigravity

agy mcp add groundcheck https://groundcheck.seiche.info/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"groundcheck","server_url":"https://groundcheck.seiche.info/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"groundcheck","server_url":"https://groundcheck.seiche.info/mcp"}

Tools

• attest_delivery ~835 tokens
  PURPOSE: Neutral delivery verification for agentic commerce. You (or your principal) paid some OTHER service over x402 and got a response; this tool verifies what was delivered and returns a SIGNED, offline-verifiable delivery receipt binding payment -> delivery -> content: the settlement receipt (b
• check_citations ~443 tokens
  PURPOSE: Fact-check EVERY factual claim in a block of text and return a per-claim report — the batch form of verify_claim, for AI-generated drafts or documents before you publish or act on them. GUIDELINES: Call on any multi-claim text you are about to rely on. Each reported claim carries the same a
• extract_claims ~504 tokens
  PURPOSE: Split text into independently checkable ATOMIC factual claims — the cheap first step of a verification loop (extract -> ground -> attest). Returns {claims: [...], count, input_sha256} plus a signed receipt bound to the input hash. GUIDELINES: Call when you want to see WHICH claims a documen
• resolve_instrument ~506 tokens
  PURPOSE: Resolve a security identifier (ticker, ISIN, CUSIP, SEDOL, FIGI) or an instrument name to canonical FIGI records via Bloomberg open symbology (OpenFIGI), WITH provenance and a signed receipt. Returns {matched, instruments: [...], provenance}. GUIDELINES: Call BEFORE acting on any claim, ord
• verify_claim ~630 tokens
  PURPOSE: Fact-check one claim against live retrieved sources and return a result you can GATE A DECISION ON, not just read. Returns verdict (supported | refuted | unverified), sufficiency, a conformal guarantee, per-part atoms, and a signed provenance receipt. GUIDELINES: Call BEFORE asserting a fac

Browse

• GitHub tools
• Website monitoring
• Payments
• Company data
• GitHub and code hosting

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