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Delx Dedupe List
x402
Delx Dedupe List 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).
Removes duplicate values from an array while preserving the original first-seen insertion order, returning a deduplicated list as JSON.
Price / call$0.001
Success—
StatusUnknown
How this service works
Deduplicate a list while preserving first-seen order — first-party local utility for agent preflight and proven micro-utils expansion. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, no web search, no live RPC, and no mediagen. Results are advisory; the caller owns authorization, budgets, and production controls. Sibling of Delx routes that already converted…
Output
Returns a deterministic JSON object containing the deduplicated array with all duplicate entries removed and first-seen insertion order preserved. The result is machine-readable and stateless — no input is retained after the call.
Example use cases
Clean pipeline tag list before indexing
“I have a list of tags collected from multiple sources and there are lots of repeats — can you deduplicate this array and keep them in the order they first appeared: ["javascript", "python", "javascript", "typescript", "python", "go"]?”
Deduplicating user-submitted category choices
“Users submitted a form with multiple category selections and there are duplicates in the combined responses. Remove all repeated entries from this list while keeping the first-seen order: ["finance", "health", "finance", "travel", "health", "education", "travel"].”
Preflight dedup before agent tool calls
“Before I send this list of city names to the next step in my workflow, deduplicate it so I'm not making redundant calls — here's the list: ["Berlin", "Paris", "Berlin", "Tokyo", "Paris", "London"].”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/dedupe-listWhen to prefer
Choose this endpoint when you need a simple, deterministic, stateless deduplication of an array with guaranteed first-seen order preservation, especially in agent preflight steps or lightweight pipeline cleanup tasks where you don't want to implement dedup logic yourself. It is ideal for micro-utility use cases where cost ($0.001 USDC) and latency matter more than complex dedup strategies. Prefer alternatives if you need fuzzy/semantic deduplication, deduplication by a specific key in objects, or dedup logic embedded in a larger data processing pipeline.
Side effects
- Empty array input returns an empty array without error
- Non-array input for the items field may return a validation error
- Malformed JSON request body returns a 400-level error
- Payment not included or insufficient USDC value returns a 402 Payment Required response
- Very large arrays may hit payload size limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | Input field: items. |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 3,
"items": [
"a",
"b",
"c"
],
"schema": "delx/util-dedupe-list/v1",
"removed": 1
}
}Tags
x402
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