The Groundcheck MCP server,
connected in one click.
Verify claims, resolve FIGI identity, extract claims, and sign x402 delivery receipts over MCP. Connect the official Groundcheck MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Groundcheck to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http groundcheck https://groundcheck.seiche.info/mcpRun in your terminal, then restart Claude Code.
Groundcheck · https://groundcheck.seiche.info/mcp
What your AI can do with Groundcheck
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “verify_claim”: PURPOSE: Fact-check one claim against live retrieved sources and return a result you can GATE A DECISION ON, not just read. Returns verdict.”
“Use “check_citations”: 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.”
“Use “resolve_instrument”: PURPOSE: Resolve a security identifier (ticker, ISIN, CUSIP, SEDOL, FIGI) or an instrument name to canonical FIGI records via Bloomberg open.”
“Use “extract_claims”: PURPOSE: Split text into independently checkable ATOMIC factual claims — the cheap first step of a verification loop (extract -> ground -> a.”
How secure is the Groundcheck MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Groundcheck holds up.
Official endpoint
Operated by Groundcheck (seiche.info) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Groundcheck adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Groundcheck
Choose Groundcheck in the gate directory. No sign-in needed.
Use it anywhere
Groundcheck's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Groundcheck exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
verify_claim — PURPOSE: Fact-check one claim against live retrieved sources and return a result you can GATE A DECISION ON, not just read. Returns verdict
check_citations — 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
resolve_instrument — PURPOSE: Resolve a security identifier (ticker, ISIN, CUSIP, SEDOL, FIGI) or an instrument name to canonical FIGI records via Bloomberg open
extract_claims — PURPOSE: Split text into independently checkable ATOMIC factual claims — the cheap first step of a verification loop (extract -> ground -> a
attest_delivery — PURPOSE: Neutral delivery verification for agentic commerce. You (or your principal) paid some OTHER service over x402 and got a response; t
Who runs the Groundcheck MCP server?
The Groundcheck MCP server at a glance
https://groundcheck.seiche.info/mcpQuestions, answered
Is there an official Groundcheck MCP server?
Yes — Groundcheck operates its own remote MCP server at groundcheck.seiche.info. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Groundcheck to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Groundcheck in the directory. No account or sign-in is needed. From then on, Groundcheck's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Groundcheck runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Groundcheck MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Groundcheck in minutes. No credit card required.
Connect more than just Groundcheck
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Groundcheck in: Claude · Claude Code · ChatGPT · Cursor · VS Code