# RunOnProof Release Payment to Supplier > RunOnProof Release Payment to Supplier is a paid API for AI agents from api.runonproof.com, paid per call via x402, $0.79/call, status unknown (last checked 2026-09-13). Decides whether to ALLOW, HOLD, or BLOCK a US supplier payment before funds move, returning a signed proof capsule with reasons and remediation steps. ## Facts - Endpoint: POST https://api.runonproof.com/v1/us/decision-gates/release-payment-to-supplier - Price: $0.79/call - Payment: x402 - Status: unknown - Last checked: 2026-09-13 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/runonproof-release-payment-to-supplier-93cb42a0 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PHn8qw11UjM1aT32lNpFg Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability runonproof-release-payment-to-supplier-93cb42a0 -d '' ``` Example prompt: Before we release the $47,500 wire to supplier Acme Industrial (entity ID SUP-00291), run a RunOnProof payment decision check against invoice INV-2024-8821 for buyer org ORG-10045 — apply our standard federal-only risk policy with low tolerance and give me the signed decision and reasons. ## When to prefer this Choose this endpoint when you need a cryptographically signed, auditable go/no-go decision on a US supplier payment before funds are released — especially in accounts payable workflows requiring fraud prevention, buyer mandate verification, or compliance proof. Prefer it over generic fraud APIs when you need deterministic replay, a Proof Capsule for audit, or structured remediation guidance. Note it is FEDERAL_ONLY and does not execute payments or initiate monitoring. ## Known failure modes - Missing required fields (buyer, payee, invoice, supplier, amount) returns a 400 validation error - Invalid or mismatched digests/fingerprints return a signature verification failure - Stale freshness_requirements (max_age_seconds exceeded) return a freshness violation error - Duplicate idempotency_key with differing parameters returns a conflict error - Unsupported jurisdiction or coverage values (non-US or non-FEDERAL_ONLY) return a 422 unprocessable entity - Agent request_signature validation failure returns an authentication error - Service unavailability returns a 503 with retry guidance ## How this service works RunOnProof Payment Decision decides whether to release a US supplier payment before funds move. 0.79 USDC: scoped checks, reasons, evidence and signed proof binding supplier, invoice digest, amount, payee/destination and mandate. FEDERAL_ONLY. No state checks, bank ownership or invoice authenticity guarantee; never executes payment. HOLD/UNDETERMINED are not permission to pay; HOLD may be paid. Recover the same acquired result without paying again. See the provider guide. ## Output Returns a decision of ALLOW, HOLD, or BLOCK for the supplier payment, along with structured reasons for the decision, remediation steps if the payment is held or blocked, a cryptographically signed Proof Capsule for audit and compliance, and a deterministic replay identifier. Coverage is FEDERAL_ONLY; no state-level checks are performed. The endpoint never executes the actual payment. ## Request schema (JSON Schema) ```json { "type": "object", "properties": { "buyer": { "type": "object", "required": [ "organization_id", "organization_digest" ] }, "payee": { "type": "object", "required": [ "type", "value", "fingerprint" ] }, "amount": { "type": "string" }, "intent": { "const": "RELEASE_PAYMENT_TO_SUPPLIER" }, "invoice": { "type": "object", "required": [ "obligation_id", "document_digest" ] }, "coverage": { "const": "FEDERAL_ONLY" }, "currency": { "type": "string" }, "supplier": { "type": "object", "required": [ "entity_id", "identifiers" ] }, "disclosure": { "type": "object", "required": [ "profile", "audience_digest" ] }, "correlation": { "type": "object", "required": [ "correlation_id", "trace_id" ] }, "risk_policy": { "type": "object", "required": [ "policy_id", "tolerance" ] }, "jurisdiction": { "const": "US" }, "buyer_mandate": { "type": "object", "required": [ "payload", "mandate_digest", "signature" ] }, "schema_version": { "const": "1.0.0" }, "idempotency_key": { "type": "string" }, "economic_purpose": { "type": "string" }, "requesting_agent": { "type": "object", "required": [ "agent_id", "key_id", "request_signature" ] }, "decision_fee_payer": { "type": "string" }, "evidence_references": { "type": "array", "items": {} }, "payment_destination": { "type": "object", "required": [ "type", "value", "fingerprint" ] }, "coverage_requirements": { "type": "object", "required": [ "jurisdiction", "coverage" ] }, "freshness_requirements": { "type": "object", "required": [ "max_age_seconds", "evaluated_at" ] }, "exposure_valuation_basis": { "type": "string" }, "payment_instruction_digest": { "type": "string" }, "payment_exposure_usdc_equivalent_atomic": { "type": "string" } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "policy": { "id": "US_DECISION_GATE_RELEASE_PAYMENT_TO_SUPPLIER_V1", "version": "1.0.0" }, "replay": { "reference": "/v1/us/decision-gates/release-payment-to-supplier/replays/dgdec_example_001", "deterministic": true, "additional_charge": false, "sources_reexecuted": false }, "billing": { "model": "ONE_TIME_DECISION_FEE", "charged": true, "maximum_charges": 1, "settlement_state": "SETTLED", "charges_for_decision": 1, "settlement_reference": "settlement_example_001" }, "product": "decision-gate.release-payment-to-supplier.v1", "coverage": { "scope": "FEDERAL_ONLY", "limitations": [], "jurisdiction": "US", "state_coverage": "NONE_PHASE_1", "state_good_standing": "NOT_ASSERTED" }, "decision": "HOLD", "delivery": { "state": "DELIVERED", "response_digest": "sha256:dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd", "delivery_reference": "delivery_example_001" }, "freshness": { "status": "CURRENT", "valid_as_of": "2026-09-02T12:00:00.000Z", "valid_until": "2026-09-03T00:00:00.000Z" }, "conditions": [], "request_id": "req_example_001", "decision_id": "dgdec_example_001", "remediation": [], "uncertainty": { "present": true, "reason_codes": [] }, "valid_as_of": "2026-09-02T12:00:00.000Z", "valid_until": "2026-09-03T00:00:00.000Z", "reason_codes": [], "risk_signals": [], "checks_waived": [], "decision_cost": { "asset": "USDC", "amount": "0.79", "network": "eip155:8453", "amount_atomic": "790000" }, "economic_risk": { "mode": "BINDING", "assessed_at": "2026-09-02T12:00:00.000Z", "assumptions": [], "decision_fee": { "asset": "USDC", "amount": "0.79", "network": "eip155:8453", "amount_atomic": "790000" }, "assessment_id": "dgrisk_example_001", "policy_version": "1.0.0", "assessment_digest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "observed_risk_range": { "lower_ppm": "0", "upper_ppm": "1000" }, "break_even_risk_rate": "0.00079", "mandatory_verifications": [], "break_even_risk_rate_ppm": "790", "exposure_valuation_basis": "Buyer-declared basis", "verification_economically_justified": "UNCERTAIN", "mandatory_verifications_may_be_skipped": false, "payment_exposure_usdc_equivalent_atomic": "1000000000" }, "proof_capsule": { "payload": { "payment_executed": false } … (truncated) ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/runonproof-release-payment-to-supplier-93cb42a0/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.runonproof.com](https://www.zero.xyz/host/api.runonproof.com/llms.txt)