# ONE Engine T5 Encoding Pack

> ONE Engine T5 Encoding Pack is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-10-02).

Encodes input text using a T5-based model and returns a tier-dependent encoded output for autonomous agent pipelines.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v2/encoding-pack/t5?utm_source=zero.xyz
- Price: $0.0025/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-t5-encoding-pack-87b9ea18
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0IJb8uVe4nsjGH_-w6xbs

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-t5-encoding-pack-87b9ea18 -d '<json body>'
```

Example prompt: Encode this text using the T5 encoding pack: 'The quick brown fox jumps over the lazy dog' — I need the tier-based encoded output for my downstream processing pipeline.

## When to prefer this

Choose this endpoint when you need low-cost, pay-per-call T5 text encoding without managing model infrastructure, especially in autonomous agent workflows that use x402 micropayments on Base. It is ideal for agents that need on-demand text encoding at $0.0025 per call with no subscription overhead.

## Known failure modes

- Missing or empty 'text' field in request body returns a validation error
- Payment failure or insufficient USDC balance on Base blocks the call via x402 protocol
- Overly long text input may exceed model context limits causing truncation or error
- Network timeout on Cloudflare Workers edge if processing takes too long
- Malformed JSON body returns a parse error

## How this service works

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

## Output

Returns a JSON object containing a 'tier' integer indicating the processing tier used and a 'result' field with the tier-dependent T5 encoded output for the submitted text.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 5,
  "result": "Tier-dependent output"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-t5-encoding-pack-87b9ea18/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)