# ONE Engine Encoding Pack Tier 3

> ONE Engine Encoding Pack Tier 3 is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0012/call, status unknown (last checked 2026-10-02).

Encodes text using a tier-3 encoding/transformation algorithm via a low-cost pay-per-call API on Base blockchain.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/encoding-pack/t3?utm_source=zero.xyz
- Price: $0.0012/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-3-fd02880a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__eVzoPUhbTcDrlpHjaJzy

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-3-fd02880a -d '<json body>'
```

Example prompt: Encode this text using ONE Engine's tier-3 encoding pack: 'Hello, world — this is my raw input string that needs to be packed and transformed.'

## When to prefer this

Choose this endpoint when you need a low-cost, pay-per-call text encoding or packing transformation specifically at tier 3, and you are operating an autonomous agent on Base using x402 micropayments. Prefer this over higher-tier variants when cost minimization matters and tier-3 output quality is sufficient for your use case.

## Known failure modes

- Missing or empty 'text' field returns an error or empty result
- Insufficient USDC balance or failed x402 payment results in 402 Payment Required
- Malformed JSON body causes a 400 Bad Request
- Network or Cloudflare Worker timeout returns a 503 or timeout error
- Text exceeding size limits may be rejected or truncated

## How this service works

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

## Output

A JSON object containing a 'tier' field (value 3, confirming the tier used) and a 'result' field with the tier-dependent encoded or transformed output of the submitted text.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 3,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-encoding-pack-tier-3-fd02880a/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)