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Byte 1-gram Frequency Counter
x402
Byte 1-gram Frequency Counter is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Counts the frequency of each byte value (0–255) in the provided text, returning a complete byte unigram histogram
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs counts of byte 1-grams. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/ngram-byte-1 first.
Output
A mapping of byte values (0–255) to their counts within the submitted text, representing a complete byte unigram frequency histogram. Each byte that appears at least once is listed with its occurrence count.
Example use cases
Entropy estimation for compression
“I'm about to compress a log file chunk. Can you count the byte frequencies in this text so I can estimate Shannon entropy before deciding on a compression algorithm? Here's the chunk: 'ERROR 2024-01-15 connection timeout host=db01 retries=3 ...'”
Byte distribution anomaly detection
“I want to check if this network payload looks suspicious — can you give me a byte 1-gram histogram for this string so I can compare it against expected byte distributions? The payload is: '\x00\x01\x02\xffGET /admin HTTP/1.1\r\n'”
Linguistic byte profile analysis
“I'm building a language detector and need raw byte frequency counts for this sample sentence: 'Bonjour le monde, comment allez-vous aujourd'hui?' — please give me the full byte unigram histogram.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/ngram-byte-1?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need exact, deterministic byte-level 1-gram counts without any LLM or network dependency — ideal for cryptographic preprocessing, compression analysis, or information-theoretic tasks. Prefer the free sandbox endpoint at /v1/sandbox/ngram-byte-1 first; use this paid endpoint when the sandbox is unavailable or rate-limited. For word-level or character-level frequency analysis, a different endpoint is more appropriate.
Side effects
- Empty or missing text field returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment of exactly $0.003 USDC via x402 is required; missing or incorrect payment results in 402 Payment Required
- Malformed JSON body returns a 400 error
- Non-UTF8 byte sequences may be handled differently than expected depending on server encoding
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token. |
Tags
x402
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