ActSeal
Ed25519-signed receipts for agent actions
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API that issues Ed25519-signed receipts for agent tool calls, allowing verification without trusting the agent or service.
About ActSeal
ActSeal provides a developer API for issuing Ed25519-signed receipts of agent actions. When an agent executes a tool call, ActSeal hashes the inputs and outputs, creates a cryptographic signature, and returns a portable receipt that anyone can verify publicly without authentication. The service is designed for AI agent stacks that need audit trails, including MCP and OpenAPI agents, enabling cross-agent trust and verification of action records.
- audit trails
- api
- agents
- verification
- cryptography
- signatures
Features worth knowing
- Issue signed receipts over action hashes
- Public verification without authentication
- Payment via USDC, USDT, or ETH
- Idempotency-Key support for 24 hours
- stdio MCP integration
- Issue and consume one-shot receipts
Pricing
Free: 100 receipts per UTC day. Starter: $19/month via USDC, USDT, or ETH for 500 receipts per UTC day.
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ActSeal metrics
| Metric | Value |
|---|---|
| Domain Rating | 1 no change since last check |
| Trust Flow | 2 no change since last check |
| Citation Flow | 16 no change since last check |
| Referring domains | 3 no change since last check |
| External backlinks | 57 no change since last check |
Ahrefs Domain Rating scanned 6 Nov 2026, updated 5 Nov 2026. Main topic: Arts/Writers Resources (2). Majestic scanned 5 Nov 2026, updated 5 Nov 2026. Link stats via Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
ActSeal domain facts
Reveal the domain facts
| Domain age | 15 days |
|---|---|
| Registered | |
| Expires | |
| Registrar | Name.com, Inc. |
| DNSSEC | Not signed |
ActSeal launch results
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 1 first measured 5 Nov 2026 |
| Trust Flow (Majestic) | 2 first measured 5 Nov 2026 |
| Referring domains (Majestic) | 3 first measured 5 Nov 2026 |
Day 0 since launch. Next receipt: day 30, 5 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
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FAQ
- How do I issue a signed receipt?
- Make a POST request to /v1/receipt with your action details, inputs hash, and outputs hash. ActSeal returns a signed receipt with an Ed25519 signature.
- How does payment work for the Starter plan?
- Send $19 USD equivalent in USDC, USDT, or ETH to the provided address, submit the transaction hash on the /pay page, and your account will upgrade to Starter within 24 hours.
- What networks does ActSeal accept for payments?
- ActSeal accepts payments on Base, Ethereum, Arbitrum, Polygon, and Tron networks.
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