JSON SCHEMA AUDIT / DETERMINISTIC / $0.25 USDC

Know what your
schema misses.

Get a reproducible contract score, sample-validation result, and prioritized findings without uploading code or opening an account.

Inspect the API contractNeed a human review? →
CONTRACT GAPS

Catch silent acceptance.

Flags open objects, unknown required fields, unbounded collections, and remote references.

SAMPLE PROOF

Test the payload too.

Optionally validates one real sample and returns the exact draft-07 errors.

REPRODUCIBLE

Same schema. Same report.

No generated guesses: deterministic rules, stable paths, and a schema fingerprint.

PAY-PER-REPORT

One request.
One audit.

An unpaid request returns the exact x402 v2 challenge. Verify the $0.25 amount and isolated seller wallet before signing.

Endpoint
POST /api/audit
Price
$0.25 USDC
Network
Base mainnet
Limit
64 KB
UNPAID REQUEST→ 402 PAYMENT REQUIRED
curl -X POST https://feral-tools.vercel.app/api/audit \
  -H "content-type: application/json" \
  -d '{
    "schema": {
      "type": "object",
      "properties": { "id": { "type": "string" } },
      "required": ["id"]
    },
    "sample": { "id": "job-42" }
  }'
CUSTOM SERVICE

Need fixes, not just findings?

Custom payload correction, schema hardening, fixtures, and Node.js examples are handled through the operator-owned Fiverr gig. Communication and payment stay on Fiverr.

View the live Fiverr gig