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ONE Engine Text Replace
x402
ONE Engine Text Replace is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Replaces all occurrences of a search string within a given text with a specified replacement string.
Price / call$0.001
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns a JSON object with a 'text' field containing the input string after all occurrences of the search value have been replaced with the replacement value.
Example use cases
Template placeholder substitution
“I have the template string 'Hello, {{name}}! Your order {{order_id}} is ready.' — replace every instance of '{{name}}' with 'Alice' and give me the filled-in text.”
Brand rename in copy
“I need to update this marketing blurb: 'Acme products are the best — Acme never lets you down.' Replace 'Acme' with 'Stellar' throughout.”
Code variable renaming in a snippet
“In this code snippet 'var oldName = 1; print(oldName);', swap every occurrence of 'oldName' with 'newName'.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/text/replace?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, stateless, per-call text find-and-replace operation inside an autonomous agent workflow — especially when you want to avoid spinning up a full runtime just for string substitution. At $0.001 USDC per call via x402, it's well-suited for agentic pipelines on Base that process many small text transformations independently.
Side effects
- Missing required field (text, search, or replacement) returns an error
- Empty search string may cause unexpected behavior or error
- Payment failure via x402 returns 402 before processing
- Network timeout on Cloudflare Worker returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| search | string | |
| replacement | string |
Output
Schema · Response
{
"type": "json",
"example": {
"text": "ONE bar ONE"
}
}Tags
x402
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