signafAIde
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Traceable, verifiable records of every wrapped tool call your AI agents make.

Evidence for AI regulation and audit, including EU AI Act record-keeping, ISO/IEC 42001 and SOC 2. Each record is signed by your agent, co-signed by the service and given a public timestamp. Auditors check it themselves with the open verifier. Only salted hashes leave your systems by default.

Start freeRead the quickstart

Using a coding agent? npx signafaide agent setup

A register of one agent's tool calls. Each entry has a time, the tool, a salted hash and marks: signed by the agent, co-signed by the service, public timestamp. Entry 42 is lifted out and shows a fourth mark, checked with the open verifier.
claims-botRegister of records, 13 Nov 2026
Example data
  1. 3912:57:02fetch_claim7be0c4d1…a93f
  2. 4012:57:41lookup_policy02dd9e6a…41c7
  3. 4112:58:09score_fraud_riskc3d019fa…5a10
  4. 42
    approve_payout12:58:36 UTC, salted hash 9f2c41ab…e07d
    • Signed by the agentits own key
    • Co-signed by signafAIde12:58:37
    • Public timestampby 13:00 UTC
    • Checkedopen verifier

    PASS: 12 of 12 checks passed

  5. 4313:04:15send_noticee61a30b8…0d2c
  6. 4413:07:52fetch_claim58f47a09…b6e1
  7. Entries 43 and 44 get their public timestamp at 14:00.

What a record proves

Each mark on an entry stands for one thing an auditor can check.

It does not say whether a decision was right. Records are evidence, not certification.

Who made it
Signed with your agent's own key, which never leaves your machine.
That it has not changed
Co-signed by the service and chained to the record before it. An edit or a gap shows.
When it existed
After a public randomness round and before an hourly public timestamp.
What you rely on
The open verifier code and the public drand and timestamp services, not the service's word. One command checks a record and says how many of its checks passed, and which are pending or could not run.

Developers

Wrap the tools your agent uses in Python or TypeScript. Records stay on your machine until you run signafaide init.

Install and code examples 
uv add signafaide
@signafaide.record

Auditors and compliance

What each record gives you for the EU AI Act, ISO/IEC 42001 and SOC 2, and what an auditor checks.

signafaide verify pack.json …
PASS: 11 of 12 checks passed, 1 pending (public timestamp)
Evidence and verification

Pricing

Free for 1 user and 25,000 live records a month. Solo is £19 a month, Team £49.

£0 to start, no card
Plans and limits

Plans

Prices in pounds sterling. Hash-only records are kept with no time limit on every plan. Every plan has the sandbox, the local SDK, full verification and exports. Compare every feature.

FeatureFreeSoloTeamEnterprise
Price£0£19 a month or £190 a year£49 a month or £490 a yearQuote
Users11Unlimited, with rolesUnlimited, with SSO
Live records a month25,000100,000, then £5 per 100,000250,000, then £5 per 100,000 (£3 above 10 million)Custom
Auditor links1 active, expires within 7 daysUnlimited, expiry up to 90 daysUnlimited, any expiryUnlimited, any expiry
Verification report for a period (HTML or PDF)Not includedIncludedIncludedIncluded
Replay, A/B on past decisionsNot includedNot includedIncludedIncluded
7-year retention add-on (£10 a month)Not includedNot includedOptionalBy contract
Mapped audit packs (EU AI Act, ISO/IEC 42001, SOC 2)Not includedNot includedNot includedIncluded