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Deliverable Verification & Validation Service
x402
Deliverable Verification & Validation Service is a paid API for AI agents from fastapi-service-5ag4.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-23).
Validates agent-produced deliverables against a JSON Schema plus business rules (totals matching, unique IDs), returning a pass/fail verdict, percentage of checks passed, fix hints, and a signed receipt.
Price / call$0.02
Success—
StatusUnknown
How this service works
Check agent output before you accept or pay for a deliverable: your JSON Schema plus rules like totals matching and unique IDs. Pass/fail, % of checks passed, fix hints and a signed receipt. $0.02 USDC, no signup, x402 v2.
Output
Returns a pass/fail verdict, a percentage score representing how many checks passed, human-readable fix hints describing which rules failed and how to correct them, and a cryptographically signed receipt confirming the validation run.
Example use cases
Invoice validation before payment release
“The AI just produced an invoice for the freelance project — before I release payment, validate it against this invoice schema, make sure the line totals add up to the grand total, and that each invoice line has a unique ID. Tell me if it passes and show me any fix hints if not.”
Agent report quality gate
“My research agent just returned a structured report in JSON. Can you check it against my report schema and confirm all required fields are present and correctly typed? I need a signed receipt I can keep as proof it passed before I share it with the client.”
Multi-rule deliverable audit for procurement
“We received a purchase-order JSON from our supplier agent — please validate it against our PO schema, verify that the item quantities and unit prices multiply out to the correct subtotals, and flag any duplicate order-line IDs. Show me what percentage of checks passed and what needs fixing.”
Technical details
Endpoint
POSThttps://fastapi-service-5ag4.onrender.com/verify/deliverable?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need an independent, auditable check of an AI agent's structured output before accepting or paying for it — especially when business rules like matching totals or unique ID constraints matter and a signed receipt of validation is required. Prefer it over manual review or generic JSON validators when you need both schema conformance and semantic business-rule checks in a single call with a tamper-evident receipt.
Side effects
- Invalid or malformed JSON Schema provided — returns validation error on the schema itself
- Deliverable payload is not valid JSON — parsing error returned
- Business rules are ambiguous or conflict — partial evaluation with error detail
- Network timeout on Render cold-start (free tier spin-up latency)
- Payment not settled via x402 — request rejected before validation runs
Tags
x402
Reviews
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