Name: json-schema-validate
Price: 0.003 USDC
Availability: InStock

$ man json-schema-validate

agentutility / wordmint / json-schema-validate

PRICE / CALL

$0.003

USDC · base mainnet · scheme: exact

METHOD

POST

CLUSTER

wordmint

CATEGORY

STATUS

● live

NAME

json-schema-validate — validates any json document against any json schema, draft-07 or 2020-12

SYNOPSIS

POST https://x402.agentutility.ai/json-schema-validate
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }

↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.

DESCRIPTION

Validates any JSON document against any JSON Schema, draft-07 or 2020-12. Returns valid boolean, total error count, and per-error instance_path + schema_path + keyword + message. Powered by @cfworker/json-schema (MIT), a spec-walker validator with built-in format keyword support (email / uri / date / uuid / etc.). Check whether an LLM's structured output matches the spec you asked for, validate an API response against your documented schema, or add a verification gate to an agent pipeline. 200KB schema cap + 500KB data cap keep CPU bounded. Use it as a JSON Schema validator, JSON validator, structured-output verifier, or contract checker.

INPUT — request schema

property	type	description	req?
schema	object	The JSON Schema document. Max 200,000 chars when stringified.	required
data	any	The JSON data to validate. Any value. Max 500,000 chars when stringified.	required
draft	string	Schema draft: '2020-12' (default) or 'draft-07'.	optional
valid_only	boolean	If true, skips per-error detail and returns only { valid, error_count }. Default false.	optional
formats	boolean	Deprecated no-op; format keywords (email, date, uri, uuid, etc.) are always validated. Accepted for backward compatibility.	optional

OUTPUT — response shape

field	type	description
valid	boolean	True when the data passed every constraint in the schema.
draft	string	Echo of which JSON Schema draft was used.
error_count	number	Total ajv errors raised before truncation.
truncated	boolean	True when error_count exceeded the 100-error cap and the errors array was trimmed.
errors	array	Per-error detail: instance_path (JSON pointer into the data), schema_path (JSON pointer into the schema), keyword (the constraint that failed), message (ajv's human-readable string), params (constraint-specific extras). Empty when valid_only is true.

EXAMPLES — two ways to call

EXAMPLE 1 · curl

curl -X POST https://x402.agentutility.ai/json-schema-validate \
  -H 'Content-Type: application/json' \
  -d '{ }'

first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.

EXAMPLE 2 · mcp

# Install the MCP package for this endpoint's cluster
npx -y @agentutility/mcp-<cluster>

# Required: EVM private key with USDC on Base
export X402_PRIVATE_KEY=0x...

# Then call the json-schema-validate tool from your MCP-aware agent.

MCP server handles payment automatically — your coding agent just calls the tool by name.

METADATA

tags: wordmintjson-schemavalidationschema-validateajvstructured-output
methods: POST
cluster: wordmint
price: $0.003 USDC per call

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