Checkbooth

dev.checkbooth/checkboothVersion 0.1.1-beta

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

Status

Responds259 msNov 14, 2026, 14:25 UTCAnswered our handshake without sign-in.

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We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:25 UTC
Latency: 259 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://checkbooth.dev/mcpResponds259 msNov 14, 2026, 14:25 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: checkbooth
Remote MCP server URL: https://checkbooth.dev/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"checkbooth","type":"http","url":"https://checkbooth.dev/mcp"}'

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Tools

12 tools

Tools of Checkbooth
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Yes	Yes	Not declared
`discover_capabilities`List the whole Checkbooth tool chest with honest status tags (BUILT, COMING, ON REQUEST). Filter by words, family or status. Free.	List the whole Checkbooth tool chest with honest status tags (BUILT, COMING, ON REQUEST). Filter by words, family or status. Free.	Not declared	Yes	Yes	Not declared
`issue_sandbox_key`Get a free capped beta key (cb_test_...). Shown once; we keep only its hash.	Get a free capped beta key (cb_test_...). Shown once; we keep only its hash.	Not declared	Yes	Yes	Not declared
`quote`Exact credit price of any capability before you spend anything. Free.	Exact credit price of any capability before you spend anything. Free.	Not declared	Yes	Yes	Not declared
`request_capability`Vote for a COMING capability, or describe one we do not list. Free; helps decide what opens next.	Vote for a COMING capability, or describe one we do not list. Free; helps decide what opens next.	Not declared	Yes	Yes	Not declared
`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.	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.	Not declared	Yes	Yes	Not declared
`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. Each result carries its limits. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.	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. Each result carries its limits. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.	Not declared	Yes	Yes	Not declared
`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 2 to 20 of your Checkbooth receipts and seal them into ONE signed design-review bundle with a single /check link.	Not declared	Yes	Yes	Not declared
`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. Signed receipt.	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. Signed receipt.	Not declared	Yes	Yes	Not declared
`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 engineering review, stamp, or sign-off.	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 engineering review, stamp, or sign-off.	Not declared	Yes	Yes	Not declared
`verify_report_receipt`Check that a Checkbooth receipt is genuine and unchanged. Free, no key needed.	Check that a Checkbooth receipt is genuine and unchanged. Free, no key needed.	Not declared	Yes	Yes	Not declared
`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.	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.	Not declared	Yes	Yes	Not declared

Details

Registry status: Active
Published: Nov 9, 2026
Updated: Nov 9, 2026
Website: https://checkbooth.dev/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Invoicing and accountingSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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