# ONE Engine JSON Clone Tier 8 – Detached Structural Metadata Enricher

> ONE Engine JSON Clone Tier 8 – Detached Structural Metadata Enricher is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Creates a detached JSON clone of input data enriched with 8 progressively richer layers of structural metadata.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/json/clone/t8?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-json-clone-tier-8-detached-structural-metadata-enricher-eb9d5087
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OqlXqVT79pGujisXxN9a1

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 one-engine-json-clone-tier-8-detached-structural-metadata-enricher-eb9d5087 -d '<json body>'
```

Example prompt: Take this JSON payload and give me a detached clone of it with full structural metadata applied at tier 8 — I need all 8 layers of type and schema annotations on every field.

## When to prefer this

Choose this endpoint when you need a deeply annotated, metadata-rich clone of a JSON structure for documentation, validation prep, or structural analysis purposes and want 8 distinct feature layers in a single call. It is the highest standard tier available for this cloning operation on ONE Engine, offering maximum structural richness per call at a low flat cost.

## Known failure modes

- Invalid or malformed JSON input returns a parse error
- Payload exceeding size limits may be rejected
- Missing required body returns 400-level error
- Payment failure via x402 protocol prevents execution
- Unexpected non-JSON content type may cause rejection

## How this service works

Create a detached JSON clone with progressively richer structural metadata. Tier 8/10 standard bundle with 8 output feature sets.

## Output

Returns a detached JSON clone of the submitted payload with 8 sets of progressively enriched structural metadata annotations, including type descriptors, shape information, nesting depth markers, and other schema-level features layered onto every node.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-json-clone-tier-8-detached-structural-metadata-enricher-eb9d5087/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)