Kevros Governance API
Runtime enforcement for autonomous agents. Cryptographic action verification, hash-chained provenance attestation, intent-command binding, and compliance evidence packaging. Every decision is recorded in a tamper-evident ledger. Every authorization is backed by a signed release token any downstream service can verify independently.
AgentCard object, but omits optional fields an agent may expect.
An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.
Action Verification action-verify
Verify an action against policy bounds before execution. Returns ALLOW, CONSTRAIN, or DENY with a signed release token. Downstream services verify the token independently. Fail-closed: verification failure results in DENY.
Provenance Attestation provenance-attest
Record an action in a hash-chained, append-only evidence ledger. Each attestation extends the provenance chain. Block signatures issued every 100 records using ML-DSA-87 (FIPS 204). Third parties verify the chain without Kevros access.
Intent Binding intent-bind
Bind a declared intent to a command and verify the outcome matches. HMAC-signed binding proves the chain from intent to command to result is unbroken.
Compliance Bundle trust-certificate
Generate a portable compliance evidence package containing hash-chained provenance, intent binding proofs, post-quantum block signatures, and verification instructions. Independently verifiable without Kevros access.
Media Hash Attestation media-attest
Submit a media file hash for cryptographic attestation. Returns a signed certificate proving the hash was recorded at a specific timestamp in the provenance ledger. Useful for content provenance, media integrity, and audit trails.
Media Hash Verification media-verify
Verify a media file hash against a previously issued attestation certificate. Returns the attestation status and certificate details. No charge, no authentication required.
Media Certificate Lookup media-verify-lookup
Look up a media attestation certificate by its certificate ID. Returns the full certificate including hash, timestamp, and provenance chain position. No charge, no authentication required.
Prompt Injection Detection shield-scan
Prompt injection detection via ONNX DeBERTa-v3 classifier. Scans text for injection attacks, jailbreaks, and role hijacking attempts. Returns confidence score, risk level, and HMAC-signed result. $0.01/scan or 10 trial scans/day.
MPP Session Create mpp-session
Create a governed streaming payment session. Declare budget, duration, spending rate limit, and allowed service categories. Returns a signed session token for continuous streaming payments within policy bounds. Every session is recorded in the provenance ledger. $0.02/session. POST /governance/mpp/session
MPP Session Heartbeat mpp-heartbeat
Mid-session drift check during a streaming payment session. Reports current spend, transaction count, active service, and spending rate. Kevros checks for budget overruns, rate limit violations, and unauthorized service usage. Returns session status (active, warning, suspended, expired) and remaining budget/time. No charge. POST /governance/mpp/heartbeat
MPP Session Close mpp-close
Close a streaming payment session and seal the provenance record. Reports final spend, transaction count, and close reason. Returns sealed provenance hash and compliance bundle availability. No charge. POST /governance/mpp/close
2026-09-19 from https://governance.taskhawktech.com/.well-known/agent-card.json,
HTTP 200. The body was saved verbatim and is the sole source for
everything on this page — no field is inferred.
View the captured card.
Providers change what they serve; if this card has moved or changed shape,
the provider profile carries the
current state as of the last build.
Work with this as data
Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.