Developer API · Ed25519

Signed receipts for every agent action

Hash the tool call, get a portable signature, let anyone verify — without trusting your agent or ours.

Get free API key Read the docs

100 free receipts / key / UTC day · crypto upgrade when you need more

What you get

SealIssue signed receipts over action hashes

VerifyPublic check — no trust in the caller

PayStarter via USDC / USDT / ETH

Gate402 session → settle → auto-Seal

PassIssue → check → consume one-shots

Issue in one request

Base https://actseal.xyz

curl -sS -X POST https://actseal.xyz/v1/receipt \
  -H "Authorization: Bearer as_…" \
  -H "Content-Type: application/json" \
  -d '{"action":"tool.invoke","inputs_hash":"aa…","outputs_hash":"bb…"}'

Built for agent stacks

Audit trails for tool calls your customers can re-verify
MCP / OpenAPI agents that need a signed action record
Cross-agent trust without sharing private keys

Not wallets, not KYC, not legal e-sign, not payouts.