dev.checkbooth/checkbooth

up checked 2026-11-10T21:37:27.712Z

Unclaimed · Unverified

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Publisher-provided title

Checkbooth

Publisher-provided description

Independent signed math checks for AI agents: PASS or FAIL plus a link anyone can open. Free beta.

Summary by lookupd

Lets agents run signed math checks, unit-aware formula recomputes, and tolerance analyses, returning PASS/FAIL results with verifiable…

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http checkbooth https://checkbooth.dev/mcp

Codex, remote (streamable-http)

codex mcp add checkbooth --url https://checkbooth.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "checkbooth": {
      "url": "https://checkbooth.dev/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (12 tools)

Publisher-provided text

• discover_capabilities List the whole Checkbooth tool chest with honest status tags (BUILT, COMING, ON REQUEST). Filter by words, family or status. Free.
• verify_math_or_tolerance Independent, signed recompute of your numbers: formula, worst-case tolerance stack, power budget, Nyquist sampling, or rated range. Returns PASS/FAIL/INVALID an
• run_formula Run one of our built-in physics formulas (sound speed, echo range, drop shock, field magnitude, thermal, timing and more) on YOUR inputs. Find formula codes and
• run_chain Run up to 8 checks or formulas in one call and get ONE signed bundle receipt. Each step is either a verify_math_or_tolerance argument object or {formula, inputs
• quote Exact credit price of any capability before you spend anything. Free.
• verify_report_receipt Check that a Checkbooth receipt is genuine and unchanged. Free, no key needed.
• request_capability Vote for a COMING capability, or describe one we do not list. Free; helps decide what opens next.
• seal_bundle_receipt Verify 2 to 20 of your Checkbooth receipts and seal them into ONE signed design-review bundle with a single /check link.
• verify_trig_expression Recompute a formula that uses trig (sin, cos, tan, asin, acos, atan; degree forms sind, cosd, tand, asind, acosd, atand) and compare it to a target. Signed rece
• audit_text_rounding Paste text (up to 8,000 characters). We find every inline "arithmetic = number" claim and recompute it at the stated digits. Signed receipt. We keep only hashes
• verify_claims_against_receipts Paste a README, PR description, spec or memo plus the Checkbooth results it relies on. We check every number in the text against those signed results and flag o
• issue_sandbox_key Get a free capped beta key (cb_test_...). Shown once; we keep only its hash.

Details

• Version: 0.1.1-beta
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 750 ms
• First indexed: 2026-11-09T00:17:17.539Z
• Last seen in registry: 2026-11-09T02:17:13.883Z
• Website: https://checkbooth.dev

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• 62071 servers
• Last crawl: 2026-11-11T16:39:06.253Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp