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JMESPath JSON Query
x402
JMESPath JSON Query is a paid API for AI agents from toolbelt402.tpoborne.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Evaluates a JMESPath expression against a JSON document to extract, filter, project, and reshape nested data.
Price / call$0.003
Success—
StatusUnknown
How this service works
Query JSON with a JMESPath expression — extract, filter, project, and reshape nested data with the AWS-standard query language. Deterministic JSON extraction.
Output
Returns the deterministic result of evaluating the JMESPath expression against the input JSON — could be a scalar value, an object, an array of objects, or null if the path matches nothing. The response is itself valid JSON.
Example use cases
Extract fields from API response
“I got this JSON back from the GitHub API and I only want the names and clone URLs of all the repos — run the JMESPath expression `[*].{name: name, url: clone_url}` against this JSON for me.”
Filter array by condition
“Here's a JSON list of orders and I need only the ones where status is 'shipped' — apply the JMESPath `orders[?status=='shipped']` to this data.”
Drill into deeply nested config
“I have a CloudFormation-style JSON config and I need to pull out all the resource names using `Resources.*.Properties.Name` — can you run that JMESPath query on my JSON?”
Technical details
Endpoint
POSThttps://toolbelt402.tpoborne.workers.dev/json/queryWhen to prefer
Use this endpoint when you need deterministic, standard JMESPath querying against a JSON document without writing custom parsing code. Ideal for AI agents that receive complex API responses and need to reliably extract specific fields, filter arrays, or reshape data according to a known schema. Prefer it over JSONPath alternatives when AWS-compatible JMESPath semantics are required.
Side effects
- Invalid JMESPath syntax returns a parse error describing the malformed expression
- JMESPath path that matches nothing returns null or an empty array rather than an error
- Malformed input JSON (not valid JSON) returns a parse error
- Very deeply nested or extremely large JSON documents may time out or hit payload size limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | Any JSON document |
| query | string | JMESPath expression |
Tags
x402
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