# Sentence Case Text Transform

> Sentence Case Text Transform is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).

Rewrites input text using sentence case transformation (capitalizes only the first letter of each sentence) with no network or LLM calls.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/case-sentence?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sentence-case-text-transform-67d1377b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E-LCkJlu4P2V1n4BW2efC

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 sentence-case-text-transform-67d1377b -d '<json body>'
```

Example prompt: Can you rewrite this paragraph using sentence case — only the first letter of each sentence should be capitalized: 'THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG. IT WAS A SUNNY DAY IN THE PARK.'

## When to prefer this

Choose this endpoint when you need a fast, deterministic, offline sentence case transformation with no reliance on an LLM or external network. It is ideal for normalizing text at scale where consistency and low latency matter. Prefer the free sandbox endpoint (POST /v1/sandbox/case-sentence) for testing before paying. Use this paid endpoint when the sandbox is unavailable or when you need guaranteed production-grade processing.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Malformed JSON body results in a 400 bad request
- Payment not provided or insufficient USDC (must be exactly $0.004) results in 402 Payment Required

## How this service works

Call when an agent needs text rewritten with the sentence case transform. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/case-sentence first.

## Output

The endpoint returns the input text rewritten in sentence case, where only the first letter of each sentence is capitalized and the rest are lowercased. No external network calls or AI models are involved — it is a deterministic, pure string transformation.

## 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/sentence-case-text-transform-67d1377b/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)