# Sponge Case Text Transform

> Sponge Case Text Transform is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-24).

Rewrites input text using sponge case (alternating upper/lower characters) with no network or LLM dependencies

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/case-sponge?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sponge-case-text-transform-961cd405
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v5zVeYwCtZ02UJpj0WA-v

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 sponge-case-text-transform-961cd405 -d '<json body>'
```

Example prompt: Can you apply sponge case to this text: 'This is a perfectly normal statement that should not be taken seriously'?

## When to prefer this

Use this endpoint when you need a deterministic, fast, offline sponge case transformation without relying on an LLM or external network call. Ideal for meme generation, joke formatting, or any scenario requiring the classic alternating-caps style. Prefer the unpaid sandbox endpoint at POST /v1/sandbox/case-sponge when available to avoid the $0.005 USDC cost.

## Known failure modes

- Empty or missing text field returns validation error
- Text exceeding 100,000 character limit is rejected
- Payment of exactly $0.005 USDC required; incorrect payment amount causes 402 response
- Network timeout if payment processing stalls

## How this service works

Call when an agent needs text rewritten with the sponge case transform. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/case-sponge first.

## Output

Returns the input text with characters alternating between uppercase and lowercase (sponge case style), e.g. 'hElLo WoRlD'

## 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/sponge-case-text-transform-961cd405/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)