# AgentShelf Syntexa Lowercase Text Transform

> AgentShelf Syntexa Lowercase Text Transform is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-24).

Converts input text to all lowercase characters using a deterministic, offline transform with no LLM or network calls.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/case-lower?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-lowercase-text-transform-5e408123
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Pnt-cJqCRiTNc9C8o79HD

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 agentshelf-syntexa-lowercase-text-transform-5e408123 -d '<json body>'
```

Example prompt: Can you convert this text to all lowercase: 'Hello World, THIS IS A TEST String!'?

## When to prefer this

Prefer this endpoint when you need a guaranteed deterministic, offline lowercase transform with no LLM involvement and no network calls beyond the API itself. Use the free sandbox alternative (POST /v1/sandbox/case-lower) for testing before incurring the $0.001 USDC cost. Choose this over general-purpose LLM text rewriting when you need a pure, predictable case conversion without any AI interpretation or hallucination risk.

## Known failure modes

- Empty string input returns a validation error (minLength: 1 enforced)
- Input exceeding 100,000 characters is rejected (maxLength enforced)
- Payment failure or insufficient USDC balance results in 402 response — use free sandbox endpoint POST /v1/sandbox/case-lower first
- Malformed JSON body returns 400 bad request

## How this service works

Call when an agent needs text rewritten with the lower case transform. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/case-lower first.

## Output

Returns the input text with all alphabetic characters converted to lowercase. The output is a plain string matching the input length and structure but with every uppercase letter replaced by its lowercase equivalent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "examples": [
    "Hello, World!"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-syntexa-lowercase-text-transform-5e408123/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)