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AgentShelf Swap Case Transform
x402
AgentShelf Swap Case Transform is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-24).
Rewrites input text by swapping the case of every character (uppercase becomes lowercase and vice versa) with no network calls or LLM involvement.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs text rewritten with the swap case transform. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/case-swap first.
Output
Returns the input text with every alphabetic character's case inverted — uppercase letters become lowercase and lowercase letters become uppercase; non-alphabetic characters are passed through unchanged.
Example use cases
Code comment case inversion
“Take this comment string 'TODO: Fix This Bug ASAP' and swap the case of every character so uppercase becomes lowercase and lowercase becomes uppercase.”
Stylized social media post
“I want to make this caption look quirky — can you swap the case on 'Just another Monday morning' so it alternates between upper and lower?”
Text transformation pipeline step
“As part of my data pipeline, I need the string 'Product Name: Widget Pro MAX 3000' to have its case fully swapped — all caps become lowercase and all lowercase become uppercase.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/case-swap?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a deterministic, pure swap-case transformation with no AI inference involved and want a guaranteed exact result. It is faster and cheaper than asking an LLM to perform case swapping. Prefer the free sandbox endpoint POST /v1/sandbox/case-swap first if available; use this paid endpoint when the sandbox is unavailable or you need production reliability.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment of exactly $0.003 USDC is required; incorrect payment amount results in a 402 error
- Malformed JSON request body results in a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token. |
Tags
x402
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