{"protocol":"mpp","version":"1.0","scheme":"Payment","spec":"https://paymentauth.org","provider":{"name":"Kevros Governance API","organization":"TaskHawk Systems","url":"https://governance.taskhawktech.com"},"availability":{"regions":["US"],"geofence":"US-only","export_control":"CCATS-pending","allied_access":"direct-sale-with-license","effective_from":"2026-04-19"},"payment_methods":["stripe","lightning"],"primary_method":"stripe","methods":{"stripe":{"description":"Card/bank payments via Stripe (mppx Machine Payments SDK)","intent":"charge","currency":"usd","minimum_amount":"50","minimum_amount_unit":"usd_cents","challenge_url":"https://governance.taskhawktech.com/stripe/mpp-challenge"},"lightning":{"description":"Bitcoin micropayments via Lightning Network (L402)","intent":"charge","currency":"BTC","minimum_amount":"0","minimum_amount_unit":"sats"}},"challenge_flow":{"description":"1. POST to any paid endpoint without Authorization -> 402 with WWW-Authenticate: Payment challenge(s). 2. Agent chooses a method and fulfills payment off-band. 3. Re-POST with Authorization: Payment <credential>. 4. Server verifies and returns 200 with Payment-Receipt.","auth_header":"Authorization","auth_scheme":"Payment","receipt_header":"Payment-Receipt","challenge_ttl_seconds":600},"standards":{"budget_authorization":"IETF HTTPAPI draft-mcgraw-httpapi-agent-budget-00","enforcement":"Kevros AI Governance Enforcement Kernel (Formally Verified)"},"credits_url":"https://governance.taskhawktech.com/stripe/checkout?tier=credits","resources":[{"url":"https://governance.taskhawktech.com/governance/verify","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"1","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":50},"description":"Action verification  -  signed ALLOW/CONSTRAIN/DENY"},"price_usd":0.01,"description":"Action verification  -  signed ALLOW/CONSTRAIN/DENY","stripe_note":"Stripe batched: $0.50 charge = 50 calls @ $0.01 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/governance/attest","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"2","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":25},"description":"Provenance attestation  -  hash-chained evidence"},"price_usd":0.02,"description":"Provenance attestation  -  hash-chained evidence","stripe_note":"Stripe batched: $0.50 charge = 25 calls @ $0.02 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/governance/bind","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"2","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":25},"description":"Intent binding  -  cryptographic intent-to-command proof"},"price_usd":0.02,"description":"Intent binding  -  cryptographic intent-to-command proof","stripe_note":"Stripe batched: $0.50 charge = 25 calls @ $0.02 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/governance/bundle","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"5","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":10},"description":"Compliance bundle  -  portable evidence package"},"price_usd":0.05,"description":"Compliance bundle  -  portable evidence package","stripe_note":"Stripe batched: $0.50 charge = 10 calls @ $0.05 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/governance/batch","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"1","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":50},"description":"Batch operations  -  multiple governance calls"},"price_usd":0.01,"description":"Batch operations  -  multiple governance calls","stripe_note":"Stripe batched: $0.50 charge = 50 calls @ $0.01 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/media/attest","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"5","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":10},"description":"Media attestation  -  PQC-signed certificate"},"price_usd":0.05,"description":"Media attestation  -  PQC-signed certificate","stripe_note":"Stripe batched: $0.50 charge = 10 calls @ $0.05 each. Lightning handles single-call micro-payments natively."},{"url":"https://governance.taskhawktech.com/shield/scan","method":"POST","x-payment-info":{"intent":"charge","method":"stripe","amount":"1","currency":"usd","amount_unit":"usd_cents","batching":{"required_for_method":"stripe","minimum_intent_amount":50,"minimum_intent_amount_unit":"usd_cents","credits_per_intent":50},"description":"Prompt injection detection  -  DeBERTa classifier"},"price_usd":0.01,"description":"Prompt injection detection  -  DeBERTa classifier","stripe_note":"Stripe batched: $0.50 charge = 50 calls @ $0.01 each. Lightning handles single-call micro-payments natively."}],"also_accepts":["x402","L402"],"discovery":{"openapi":"https://governance.taskhawktech.com/openapi.json","mcp_server":"https://governance.taskhawktech.com/mcp/","agent_card":"https://governance.taskhawktech.com/.well-known/agent.json","x402":"https://governance.taskhawktech.com/.well-known/x402","l402":"https://governance.taskhawktech.com/.well-known/l402","mpp":"https://governance.taskhawktech.com/.well-known/mpp","llms":"https://governance.taskhawktech.com/for-agents.txt"}}