Checkbooth

Connect Remote server

claude mcp add --transport http checkbooth https://checkbooth.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"

{
  "mcpServers": {
    "checkbooth": {
      "url": "https://checkbooth.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "checkbooth": {
      "type": "http",
      "url": "https://checkbooth.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://checkbooth.dev/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 12 found in our last check

• 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 and a receipt a second party can check at /check. Planning and math verification check only — not a licensed professional…

• 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 their input names with discover_capabilities. Every formula reproduces its own reference example before it is listed.…

• 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}. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.

• 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 receipt. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.

• 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 of your text.

• 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 overclaim phrases (for example "verified across all conditions", "guaranteed", "certified"). Deterministic, no AI. Signe…

• issue_sandbox_key

  Get a free capped beta key (cb_test_...). Shown once; we keep only its hash.

Headers

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