Independent signed math checks for AI agents: PASS or FAIL plus a link anyone can open. Free beta.
Score is being calculated.
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.
| Name | Required | Description | Default |
|---|---|---|---|
| text | Yes |
List the whole Checkbooth tool chest with honest status tags (BUILT, COMING, ON REQUEST). Filter by words, drawer or status. Free.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No | ||
| drawer | No | ||
| status | No | ||
| include_staged | No | Default false: only tools you can call right now. |
Get a free capped beta key (bb_test_...). Shown once; we keep only its hash.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
Exact credit price of any capability before you spend anything. Free.
| Name | Required | Description | Default |
|---|---|---|---|
| capability | Yes |
Vote for a COMING capability, or describe one we do not list. Free; helps decide what opens next.
| Name | Required | Description | Default |
|---|---|---|---|
| use_case | No | ||
| capability | Yes |
Run up to 8 checks or slice tools in one call and get ONE signed bundle receipt. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.
| Name | Required | Description | Default |
|---|---|---|---|
| steps | Yes |
Run one of our tested house math slices (sound speed, echo range, drop shock, field magnitude and more) on YOUR inputs. Only slices whose worked examples reproduce exactly are callable. Each result carries the slice's own limits. Planning and math verification check only — not a licensed professional engineering review, stamp, or sign-off.
| Name | Required | Description | Default |
|---|---|---|---|
| slice | Yes | ||
| inputs | Yes |
Verify 2 to 20 of your Checkbooth receipts and seal them into ONE signed design-review bundle with a single /check link.
| Name | Required | Description | Default |
|---|---|---|---|
| tokens | Yes | ||
| review_title | No |
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.
| Name | Required | Description | Default |
|---|---|---|---|
| text | Yes | ||
| results | Yes | Full Checkbooth results exactly as returned (each carries its receiptToken). |
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.
| Name | Required | Description | Default |
|---|---|---|---|
| check | Yes |
Check that a Checkbooth receipt is genuine and unchanged. Free, no key needed.
| Name | Required | Description | Default |
|---|---|---|---|
| token | Yes |
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.
| Name | Required | Description | Default |
|---|---|---|---|
| expect | Yes | ||
| values | No | ||
| expression | Yes |
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
audit_text_roundingdiscover_capabilitiesissue_sandbox_keyquoterequest_capabilityrun_slice_chainrun_slice_toolseal_bundle_receiptverify_claims_against_receiptsverify_math_or_toleranceverify_report_receiptverify_trig_expressionDeterministic signed verification of numeric & financial claims for AI agents & spreadsheets.
Independent, signed check of AI work: math, quotes, sources, links, code. Public verifiable log.
Deterministic fact verification for AI agents — checksums & curated data, not guesses.
One-stop claim verification for AI agents: verdicts with confidence, evidence, signed receipts.
Add one secure layer between your agents and this server.
