# ONE Engine Encoding Pack Tier 2

> ONE Engine Encoding Pack Tier 2 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).

Encodes or transforms input text using a tier-2 encoding pack, returning processed output suitable for autonomous agent pipelines.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/encoding-pack/t2?utm_source=zero.xyz
- Price: $0.0009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-encoding-pack-tier-2-d7663b97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lwc8u2EcvRVDa3-yjABki

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-encoding-pack-tier-2-d7663b97 -d '<json body>'
```

Example prompt: Encode this text using ONE Engine's tier-2 encoding pack: 'The quick brown fox jumps over the lazy dog'

## When to prefer this

Choose this endpoint when you need a low-cost, pay-per-call text encoding or transformation specifically at tier 2, and your agent pipeline is already set up for x402 micropayments on Base. It is ideal for autonomous agents that need lightweight, cheap text processing without committing to a subscription model.

## Known failure modes

- Missing or empty 'text' field returns an error or empty result
- Malformed JSON request body causes a 400-level error
- Insufficient x402 payment or payment failure causes a 402 Payment Required response
- Cloudflare Worker downtime may result in 503 or timeout
- Very long text inputs may be truncated or rejected depending on worker limits

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object containing the tier number (2) and a tier-dependent encoded or transformed version of the input text string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 2,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-encoding-pack-tier-2-d7663b97/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)