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Delx Char Freq
x402
Delx Char Freq is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).
Computes character frequency distribution and top character histogram for a given text string
Price / call$0.001
Success—
StatusUnknown
How this service works
Compute character frequency top counts. Call when you inspect distribution before encoding or compression steps. Returns unique count and top char histogram for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Output
Returns the number of unique characters in the input text along with a histogram of the top characters by frequency, expressed as a local JSON object. No external network calls are made; results are computed in-process and returned immediately.
Example use cases
Pre-compression entropy inspection
“Before I compress this log data, can you show me the character frequency distribution so I can decide on the best encoding? Here's the text: 'ERROR 404: page not found. ERROR 500: internal server error. WARNING: disk usage at 95%.'”
Tokenizer character coverage check
“I need to know which characters dominate this dataset sample and how many unique characters appear — can you run a character frequency analysis on: 'αβγδεζηθ hello world 12345 !@#$%'”
Content fingerprinting before encoding
“Can you compute the top character counts for this text so I can profile it before choosing a character encoding scheme? Text: 'Héllo Wörld! Thís is ä tëst strïng with diacritics.'”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/char-freqWhen to prefer
Use this endpoint when you need a lightweight, fast, local character-level frequency analysis prior to compression, encoding selection, or text profiling steps. It is ideal for agents that need to inspect text composition without any external data retention or third-party processing. Prefer it over heavier NLP endpoints when only character-level statistics (not word or semantic-level) are needed.
Side effects
- Empty or missing text field — likely returns an error or empty histogram
- Extremely long strings may hit payload size limits
- Non-UTF-8 or binary input may produce unexpected character counts
- Network or payment failure via x402 protocol results in no response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input field: text. |
Output
Schema · Response
{
"type": "json",
"example": {
"top": [
{
"char": "b",
"count": 3
},
{
"char": "a",
"count": 2
},
{
"char": "c",
"count": 1
}
],
"count": 6,
"schema": "delx/util-char-freq/v1",
"unique": 3
}
}Tags
x402
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