kevros 0.3.11

Python SDK for the Kevros Governance Gateway. Seven endpoints for autonomous agent control: verify (ALLOW/CLAMP/DENY), attest (hash-chained provenance), bind (cryptographic intent binding), bundle (compliance evidence export), scan (threat detection), media/attest (PQC-signed media certificates), and batch operations.

kevros

Python SDK for the Kevros Governance Gateway. Seven endpoints for autonomous agent control: verify (ALLOW/CLAMP/DENY), attest (hash-chained provenance), bind (cryptographic intent binding), bundle (compliance evidence export), scan (threat detection), media/attest (PQC-signed media certificates), and batch operations.

Installation

pip install kevros

Quick Start

from kevros import KevrosClient

# Zero config — auto-signs up for free tier (1,000 calls/month) on first use
# Key is cached at ~/.kevros/api_key for future sessions
client = KevrosClient()

# Verify an agent action against policy bounds
result = client.verify(
    agent_id="agent-001",
    action="transfer",
    parameters={"amount": 150.00, "recipient": "vendor-xyz"},
    context={"session_id": "abc123"}
)

if result.decision == "ALLOW":
    # Attest the decision with hash-chained provenance
    attestation = client.attest(
        decision_id=result.decision_id,
        evidence=result.evidence
    )
    print(f"Attestation hash: {attestation.hash}")
elif result.decision == "CLAMP":
    print(f"Action clamped: {result.clamped_parameters}")
else:
    print(f"Action denied: {result.reason}")

Endpoints

Endpoint	Method	Price	Description
/governance/verify	POST	$0.01	Action verification. Returns signed ALLOW, CLAMP, or DENY.
/governance/attest	POST	$0.02	Provenance attestation. Hash-chained evidence trail.
/governance/bind	POST	$0.02	Cryptographic intent-to-command binding proof.
/governance/bundle	POST	$0.05	Compliance evidence export. Full audit chain.
/shield/scan	POST	$0.01	Threat detection and input validation.
/media/attest	POST	$0.05	PQC-signed media attestation certificate.
/governance/batch	POST	$0.01	Batch operations. Multiple calls, one request.

Payment Protocols

Three ways to pay. No vendor lock-in.

Protocol	Rail	Settlement
x402	USDC on Base	Per-call. Coinbase Commerce + Cloudflare.
L402	Lightning Network	Per-call. Instant sats, cryptographic token auth.
MPP / Stripe Tempo	Fiat (USD)	Subscription or credit packs via Stripe.

Pricing

Tier	Monthly	Included Calls
Free	$0	10
Scout	$29	5,000
Sentinel	$149	50,000
Sovereign	$499	500,000

1,000 calls/month free. No credit card required. Overage billed at standard per-call rates.

Core Concepts

Fail-closed by default. If the gateway is unreachable or returns an error, the SDK returns DENY. No silent failures. No open-by-default fallbacks.

Hash-chained provenance. Every attestation links to the previous one via SHA-256 chain. Tampering with any record breaks the chain and is detectable by any verifier.

Signed decisions. Every ALLOW, CLAMP, and DENY response is cryptographically signed. Decisions are independently verifiable without trusting the gateway.

Configuration

client = KevrosClient(
    api_key="your-api-key",
    base_url="https://governance.taskhawktech.com",  # default
    timeout=10,          # seconds
    fail_closed=True     # default; DENY on any error
)

Environment Variables

KEVROS_API_KEY=your-api-key
KEVROS_BASE_URL=https://governance.taskhawktech.com

Links

Resource	URL
Gateway	https://governance.taskhawktech.com
API Docs	https://governance.taskhawktech.com/docs
Status	https://governance.taskhawktech.com/status
Pricing	https://governance.taskhawktech.com/upgrade

License

Proprietary. Copyright 2026 TaskHawk Systems, LLC.

CAGE Code 10YV4. SAM.gov registered. NIST 800-171 / DFARS 252.204-7012 aligned.

Contact

[e-mail]