# agent402.tools JSON Pointer Resolver

> agent402.tools JSON Pointer Resolver 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).

Resolves an RFC 6901 JSON Pointer path against a JSON value, returning the targeted value or found:false if the path doesn't exist.

## Facts

- Endpoint: POST https://agent402.tools/api/json-pointer
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-tools-json-pointer-resolver-4751479a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YeJZ9THiP1_-DnwP1ji97

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent402-tools-json-pointer-resolver-4751479a -d '<json body>'
```

Example prompt: I have a big JSON blob and I need to pull out the value at /order/items/2/price — can you resolve that RFC 6901 pointer against it and give me back the value?

## When to prefer this

Use this endpoint when you need a standards-compliant RFC 6901 JSON Pointer resolution on an arbitrary JSON value without writing custom traversal code. Ideal for agents that receive JSON payloads and need to extract specific fields by path without full JSON parsing logic.

## Known failure modes

- Invalid RFC 6901 pointer syntax returns an error
- Pointer path not found in JSON returns found:false
- Malformed JSON input causes a parse error
- Empty or missing json/pointer fields cause a validation error
- Deeply nested pointer on a scalar value returns found:false

## How this service works

Resolve an RFC 6901 JSON Pointer (e.g. /items/0/name) against a JSON value. Returns the value or found:false.

## Output

Returns the value found at the specified JSON Pointer path within the provided JSON, or an object with found:false if the pointer path does not exist in the JSON structure.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "json": {
   "description": "JSON value"
  },
  "pointer": {
   "type": "string",
   "description": "RFC 6901 pointer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "found": true,
  "value": "b"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-tools-json-pointer-resolver-4751479a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)