Warrant
A signed mandate plus a receipt trail, bound to a Rider. Who is Rider; what they may do and proof they did it is Warrant.
Product: https://www.slidphilabs.com/warrant
Issue: POST https://www.slidphilabs.com/api/warrant/issue header X-Agent-Rider
Verify: POST /api/warrant/verify
MCP: spl_warrant_issue / spl_warrant_verify / spl_warrant_receipt
Caps live on the mandate: allow_hosts, actions, max_usd, max_calls, exp. Receipts decrement remaining budget. Tamper fails verify.
Needs a Rider for non-demo issue. 3 issues + 10 receipts/day free; verify free.
Pay
$29/mo ยท $290/yr. Dual license AGPL-3.0-or-later or commercial grant.