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Delx Join Lines
x402
Delx Join Lines is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Joins an array of text lines into a single string using a specified separator, returning the joined text and line count.
Price / call$0.001
Success—
StatusUnknown
How this service works
Join an array of lines with a separator. Call when you reassemble agent-held line lists for prompts or files. Returns joined text and line count for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Output
Returns the joined text as a single string produced by concatenating all input lines with the given separator, along with the count of lines that were joined.
Example use cases
Reassembling prompt from line list
“I have these lines stored as an array: ['You are a helpful assistant.', 'Answer concisely.', 'Do not hallucinate.'] — join them with a newline character so I can use them as a system prompt.”
Building CSV row from fields
“I've got these field values as a list: ['Alice', '30', 'Engineer', 'NYC'] — can you join them with a comma separator to make a single CSV row?”
Reconstructing file content from lines
“I split a config file into lines earlier and now I need to put it back together — join these lines with a newline: ['HOST=localhost', 'PORT=8080', 'DEBUG=false'].”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/join-linesWhen to prefer
Choose this endpoint when you have an agent-held array of text lines that need to be reassembled into a single string with a precise separator, especially in agentic pipelines where text was previously split for processing. It is purpose-built for this single operation, stateless, requires no API keys, and is priced at a fraction of a cent per call via x402 micropayment on Base.
Side effects
- Empty lines array returns empty string or zero count
- Missing separator defaults to empty string or may error
- Non-string elements in lines array may cause unexpected output
- Payment failure via x402 results in 402 response and no output
- Malformed request body returns 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lines | array | Input field: lines. |
| separator | string | Input field: separator. |
Output
Schema · Response
{
"type": "json",
"example": {
"text": "alpha\nbeta\ngamma",
"count": 3,
"schema": "delx/util-join-lines/v1"
}
}Tags
x402
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