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ONE Engine Deterministic Text Segmentation – First Unicode Characters (Param=1, Tier 3)
x402
ONE Engine Deterministic Text Segmentation – First Unicode Characters (Param=1, Tier 3) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0008/call, status unknown (last checked 2026-10-14).
Extracts the first Unicode character(s) from a text input using a deterministic segmentation algorithm, returning progressively richer diagnostics at Tier 3 of 10.
Price / call$0.0008
Success—
StatusUnknown
How this service works
Deterministic text segmentation utility: Return first Unicode characters; parameter=1. Tier 3/10 provides progressively richer diagnostics.
Output
Returns the first Unicode character(s) extracted from the input text (based on parameter=1), along with Tier 3 diagnostic metadata that provides richer segmentation details than lower tiers, such as character code points, byte offsets, and segmentation boundary information.
Example use cases
Validate text encoding at character boundary
“Take this user-submitted string '𝄞Allegro' and extract the very first Unicode character so I can verify the encoding is correct and get the tier 3 diagnostic details.”
Debug Unicode segmentation in pipeline
“I'm debugging a text pipeline — can you run '안녕하세요' through the deterministic head-character segmenter with parameter 1 at tier 3 and show me exactly what it returns?”
Classify first character of multilingual input
“For each of these strings, I need to know the very first Unicode character: '中文', 'Привет', and 'مرحبا' — run them through the head-chars segmenter at param 1, tier 3 and return the diagnostics.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v8/text-segment/head-chars/p1/t3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, deterministic, reproducible extraction of the first Unicode character from a string with moderate diagnostic output (Tier 3). Ideal for pipelines that need to inspect or validate the leading character of user input, especially with multilingual or non-ASCII text, and when you want more than minimal diagnostics but don't need the full Tier 10 output.
Side effects
- Empty string input may return empty result or error
- Non-UTF-8 encoded input may cause parsing failures
- Malformed or null body returns 400-level error
- Payment failure via x402 returns 402 Payment Required
- Very long inputs may be truncated or time out
Tags
x402
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