# KEVAREMESH JSON Pointer Lookup

> KEVAREMESH JSON Pointer Lookup is a paid API for AI agents from kevaremesh-web.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-23).

Evaluates an RFC 6901 JSON Pointer expression against a provided JSON document and returns the resolved value, its type, and whether it exists.

## Facts

- Endpoint: POST https://kevaremesh-web.vercel.app/api/x402/json-pointer?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kevaremesh-json-pointer-lookup-e8acc313
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BVeD17u8tB0Rr3Ho2VFp9

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 kevaremesh-json-pointer-lookup-e8acc313 -d '<json body>'
```

Example prompt: Look up the value at the JSON pointer '/store/book/0/title' in this document: {"store":{"book":[{"title":"Moby Dick","price":9.99}]}} — tell me what value is there and what type it is.

## When to prefer this

Use this endpoint when you need a standards-compliant RFC 6901 JSON Pointer resolution without writing parsing code, especially inside an AI agent pipeline where extracting a specific nested value from a dynamic JSON payload is required at runtime. Prefer this over JSONPath libraries when strict RFC 6901 compliance and a typed result with an existence flag are needed.

## Known failure modes

- Invalid RFC 6901 pointer syntax returns an error or non-existent result
- Pointer path does not exist in document — returns exists: false
- Document exceeds size limits or is malformed JSON — likely returns a parse error
- Empty pointer or missing required fields returns a validation error
- Network or gateway timeout under high load

## How this service works

Buyer-first MCP procurement gateway that discovers, compares and routes live x402 APIs without making the buyer choose a provider.

## Output

Returns a JSON object containing the resolved value at the specified pointer path, a boolean indicating whether the path exists, the pointer string itself, and the data type of the resolved value (e.g. 'number', 'string', 'object'). Also includes service metadata such as product name and generation timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pointer": {
   "type": "string",
   "maxLength": 4096
  },
  "document": {}
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "value": 3,
   "exists": true,
   "pointer": "/a/0/b",
   "value_type": "number"
  },
  "product": "kevaremesh_json_pointer_v2",
  "service": "KEVAREMESH",
  "tool_name": "kevaremesh_json_pointer",
  "limitations": [
   "RFC 6901 lookup only",
   "Input document is not mutated"
  ],
  "generated_at": "2026-09-18T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kevaremesh-json-pointer-lookup-e8acc313/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kevaremesh-web.vercel.app](https://www.zero.xyz/host/kevaremesh-web.vercel.app/llms.txt)