# JSON Object Omit

> JSON Object Omit 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).

Removes specified top-level keys from a JSON object and returns the filtered result with transformation metadata

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/json-object-omit
- 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-object-omit-f3f38235
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WxY2pYgQS_LJ-JBsWcGX_

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-object-omit-f3f38235 -d '<json body>'
```

Example prompt: Take this JSON object and remove the keys 'internalId', 'debugTrace', and 'rawPayload' before I send it downstream — I need a clean version without those top-level fields.

## When to prefer this

Choose this endpoint when you need a deterministic, in-memory, stateless key-removal operation on a JSON object with no external dependencies, a versioned result contract, and a predictable cost of $0.001 USDC. Prefer it over custom code when operating in an agentic pipeline where auditability, bounded transformation counts, and a structured result envelope are important — especially before handing data to a downstream tool with a stricter schema contract.

## Known failure modes

- Keys list exceeds 256 items — request rejected
- Object exceeds 128 top-level properties — request rejected
- Key strings exceed 8192 characters — request rejected
- Invalid JSON object supplied — validation error returned
- Payment of $0.001 USDC not provided or rejected — 402 response
- Requested keys not present in object — returns object unchanged with zero removal count

## How this service works

JSON Object Omit: JSON Object Omit removes selected top-level keys from one JSON object from bounded caller-supplied values without an external provider. Call JSON Object Omit 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 Object Omit as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-part…

## Output

A versioned deterministic JSON response containing the filtered object with the specified top-level keys removed, along with counts of removed keys, normalized values, and a versioned result contract describing the transformation applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "keys": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Keys supplied to JSON Object Omit; used only for this bounded calculation and processed in memory without retention."
  },
  "object": {
   "type": "object",
   "description": "Object supplied to JSON Object Omit; 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": {
   "object": {
    "id": 1,
    "name": "A"
   },
   "key_count": 2
  },
  "schema": "delx/util-json-object-omit/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "305d1e78674b7f87732f17d6efdfe1a7f3596228185847bd3e16f0800ba254f2",
   "external_calls": 0
  },
  "operation": "data_batch:json_object_omit"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/json-object-omit-f3f38235/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)