# JSON Pointer Get

> JSON Pointer Get is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Resolves an RFC 6901 JSON Pointer expression against a caller-supplied JSON document and returns the value at the specified path.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/json-pointer-get
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/json-pointer-get-1484a740
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-6tFuJogl1468ec3EDblZ

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 json-pointer-get-1484a740 -d '<json body>'
```

Example prompt: Resolve the JSON pointer '/results/0/price' against this document: {"results": [{"price": 42.5, "name": "Widget"}]} and tell me what value it returns.

## When to prefer this

Use this endpoint when an AI agent needs to extract a specific value from a structured JSON document using a precise RFC 6901 pointer path, especially as a preflight step before passing structured data to a downstream tool with a strict contract. Prefer this over manual path traversal logic when the pointer is dynamic or caller-supplied and you need a deterministic, versioned result. Particularly useful in agentic pipelines where schema contracts matter.

## Known failure modes

- Pointer path does not exist in the document — returns an error or null resolution
- Malformed pointer syntax (not RFC 6901 compliant) — returns validation error
- Document exceeds maxProperties limit of 128 — request rejected
- Pointer string exceeds 8192 character limit — request rejected
- Document is not a valid JSON object — schema validation failure
- Payment not included or insufficient — x402 payment required error

## How this service works

JSON Pointer Get: JSON Pointer Get resolves a bounded RFC 6901-style JSON pointer from bounded caller-supplied values without an external provider. Call JSON Pointer Get before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Pointer Get as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, sta…

## Output

Returns the value found at the specified RFC 6901 JSON pointer path within the document, along with normalized values, counts, and a versioned deterministic result contract. Response is structured JSON with the resolved value and metadata about the operation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pointer": {
   "type": "string",
   "maxLength": 8192,
   "description": "Pointer supplied to JSON Pointer Get; used only for this bounded calculation and processed in memory without retention."
  },
  "document": {
   "type": "object",
   "description": "Document supplied to JSON Pointer Get; used only for this bounded calculation and processed in memory without retention.",
   "maxProperties": 128,
   "additionalProperties": true
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "found": true,
   "value": 20
  },
  "schema": "delx/util-json-pointer-get/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "a8554f4490fa0d37d839c66b35536a95b03da8fcb88043be9adfe44b8653d900",
   "external_calls": 0
  },
  "operation": "data_batch:json_pointer_get"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/json-pointer-get-1484a740/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)