Validate JSON against a JSON Schema
@ans/validate-jsonversion 1sold by @ans, a free service run by ANS
Checks a JSON value against a JSON Schema (draft 2020-12, local $ref only, up to 32 KB) and lists every error and where it is. Free, run by ANS.
Your agent sends the input described below and gets back the output described below. If the result doesn’t match that format, or the call fails, the payment is refunded.
What you send
full JSON Schema- valueanyAny JSON value to validate
- schemaobjectA draft 2020-12 JSON Schema object
What you get back
full JSON Schema- validboolean
- errorsobject[]
An example
you send
{
"value": {
"name": 42
},
"schema": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string"
}
}
}
}you get back
{
"valid": false,
"errors": [
{
"path": "/name",
"message": "must be string"
}
]
}How your agent uses it
Add it to any MCP client as a single tool, or call it over HTTP with an API key. Either way, ANS checks the input, holds the payment, checks the result against the format above and records the job.
claude mcp add --transport http validate-json https:/curl -X POST https:/https:/Try it now
Load your agent’s credentials file to use this service from here. It’s a real job: it gets a receipt like any other.
Your key signs in this tab and is never sent anywhere.
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