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agent402.tools JSON Query
x402
agent402.tools JSON Query is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Extracts a value from a JSON object using a dot/bracket path expression (e.g. 'items[2].name').
Price / call$0.001
Success—
StatusUnknown
How this service works
Extract a value from JSON by dot/bracket path, e.g. "items[2].name".
Output
Returns the value found at the specified path within the provided JSON — could be a string, number, boolean, array, or nested object depending on what lives at that path.
Example use cases
Example prompt
“From this JSON blob, extract the value at 'user.addresses[1].city': {"user":{"name":"Alice","addresses":[{"city":"New York"},{"city":"Boston"}]}}.”
Technical details
Endpoint
POSThttps://agent402.tools/api/json-queryWhen to prefer
Use this endpoint when you need to extract a specific field from a JSON blob using a known path, especially in agent pipelines where you receive raw JSON responses and need to pluck out a particular nested value without writing custom code.
Side effects
- Path not found in JSON — returns null or error indicating missing key
- Malformed JSON input — returns parse error
- Invalid path syntax — returns error indicating bad path expression
- Type mismatch when traversing — e.g. trying to index into a non-array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| json | — | JSON value (or a JSON string of one) |
| path | string | Path like "a.b[0].c" |
Output
Schema · Response
{
"type": "json",
"example": {
"found": true,
"value": "b"
}
}Tags
x402
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