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KEVAREMESH JSON Pointer Lookup
x402
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.
Price / call$0.001
Success—
StatusUnknown
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.
Example use cases
Extract nested config value
“I have this JSON config blob and I need to grab the value at '/database/host' — can you resolve that pointer and tell me what it returns and whether the path actually exists?”
Validate API response field
“Here's the API response JSON I got back. Can you check if the field at '/data/user/email' exists and what its value is? I need to know both the value and its type.”
Debug missing JSON path
“I'm getting a null somewhere in my pipeline. Can you run the pointer '/results/0/score' against this JSON document and tell me if it exists and what value it resolves to?”
Technical details
Endpoint
POSThttps://kevaremesh-web.vercel.app/api/x402/json-pointer?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| pointer | string | |
| document | — |
Output
Schema · Response
{
"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"
}
}Tags
x402
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