Instant JSON schema verifier

Machine Tool Interface · instant-json-schema-verifier

$0.01 / callPaid per call · 0 free tier No signup

Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines.

Honest Scope Guarantee

Deterministic JSON Schema validation, entirely offline. Only proves that the payload you supply matches the schema you supply.

Run in Playground (Free) Buy Card Credits Agent Quickstart

Quickstart & Execution

cURL (Paid-only route — unauthenticated calls return HTTP 402 Payment Required)

curl -X POST https://api.code402.dev/v1/tools/instant-json-schema-verifier/call \
  -H "content-type: application/json" \
  -d '{"data":{"name":"Apex Agent","version":2},"schema":{"required":["name","version"],"properties":{"name":{"type":"string"},"version":{"type":"number"}}}}'

This route is paid-only (0 free calls/day); every unauthenticated request returns an HTTP 402 Payment Required challenge with its payment terms. Machines use USDC on Base; card credits (instant Stripe checkout) are enabled in this deployment. Signed XDR-1 receipts authenticate recorded service claims, not independent settlement, delivery or zero-knowledge proofs.

Input Parameters

Field	Type	Meaning & Constraints
`data` (REQUIRED)	`object`	The JSON data object to validate against the schema.
`schema` (REQUIRED)	`object`	The JSON schema object with expected properties and types.

Response Format

Deterministic JSON payload fields: valid, errors, execution_ms. Paid responses also carry an offline-verifiable receipt object (XDR-1, secp256k1 signature recoverable to the authorized signer).

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