AI Agents & Infrastructure
signafAIde
Tamper-evident audit trail for AI agents with verifiable records
- 0community votes
- 0DR by Ahrefs no change since last check
Ahrefs Domain Rating signal 14 Nov 2026, signal shifted 14 Nov 2026.
Tamper-evident audit trail for AI agents. Each tool call is signed, co-signed and timestamped for compliance with EU AI Act, ISO 42001 and SOC 2.
What it is
signafAIde provides a tamper-evident audit trail for AI agents. Each tool call is signed by the agent, co-signed by the service and given a public timestamp. Records are chained together so edits or gaps are visible.
The service is designed for developers building AI agents and for auditors and compliance teams. It provides evidence for EU AI Act record-keeping, ISO/IEC 42001 and SOC 2 compliance. Only salted hashes of content leave your systems by default; inputs, outputs and the salt stay on your machine.
Auditors can verify records independently using the open verifier, which checks signatures, chain integrity and timestamps against public services. Records can be exported offline and verified even if the service shuts down.
Systems
- Agent signs each record with its own Ed25519 key
- Service co-signs records and chains them to prevent edits or gaps
- Public timestamp bounds each record with hourly verification
- Only salted hashes sent to service; inputs and outputs stay on your machine
- Open verifier code allows independent verification
- Python and TypeScript SDKs for wrapping agent tools
- Verification reports in HTML or PDF format with compliance mapping
- Compliance packs for EU AI Act, ISO/IEC 42001 and SOC 2
- 99.5% uptime guarantee on hosted witness in Google Cloud London
Pricing
Pricing model: Freemium
Free: £0, no card required, 1 user, 25,000 live records a month. Solo: £19/month or £190/year, 1 user, 100,000 live records a month (then £5 per 100,000). Team: £49/month or £490/year, unlimited users with roles, 250,000 live records a month (then £5 per 100,000, or £3 above 10 million). Enterprise:
Want to see what signafAIde does next? Follow them for milestones, new products and stories by email.
signafAIde metrics
Signal readout for signafaide.co.uk: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 0 Domain Rating no change since last check
- 0 Trust Flow no change since last check
- 0 Citation Flow no change since last check
- 0 Referring domains no change since last check
- 0 External backlinks no change since last check
Ahrefs Domain Rating signal 14 Nov 2026, signal shifted 14 Nov 2026. Majestic signal 14 Nov 2026, signal shifted 14 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Got a launch coming up?
Plan your launch with our free playbook, from preparing your listing to choosing more launch directories.
Quick answers
- What counts as a record?
- One decision or one outcome. A wrapped tool call is two records: one before the tool runs and one after. A note you write yourself is one.
- What does hash only mean?
- The service receives the tool name, time, chain links and a salted hash of the content. Inputs, outputs and the salt stay on your machine, so the service cannot work out the content from the hash.
- What is the retention add-on?
- Stored content is kept 1 year on Team. The add-on keeps it 7 years instead for £10 a month per organisation. Hash-only records are kept with no time limit on every plan. Enterprise sets retention in its contract.
- What if signafAIde shuts down?
- At least 12 months' notice is given before the service stops. If AIMETECH winds down the service, the witness server source is released under Apache-2.0 so anyone can run it. Exported packs keep verifying offline with the open verifier.
- Can I run the witness myself?
- Yes, under an Enterprise contract. The witness server is proprietary software licensed with that contract. The protocol specification, SDKs and verifiers are open-source under Apache-2.0 and verification packs work offline.
signafAIde has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
Also on the frontier
-
Rank 1: Device Agent
Give your AI agent a real phone with a physical SIM card and dedicated number
AI Agents & InfrastructureStartupFrance
DR 0 no change since last check 0 votes. Log in to send Device Agent a vote -
DR 20 no change since last check 0 votes. Log in to send PrivOS a vote -
DR 38 no change since last check 0 votes. Log in to send Port of Context a vote -
DR 31 no change since last check 0 votes. Log in to send Aident Loadout a vote