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ONE Engine Text Character Counter
x402
ONE Engine Text Character Counter is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Counts the number of characters in a given text string (up to 50,000 characters) and returns a token/character metric.
Price / call$0.01
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns a JSON object containing the character count (and potentially token count) for the submitted text, helping agents verify text length and measure usage metrics.
Example use cases
Pre-flight content length check
“Before I send this blog post to the content API, can you count how many characters it has? Here's the full text: [paste of article]. I need to make sure it's under 5000 characters.”
Billing estimation for text jobs
“I'm about to process this document through a pay-per-character service and need to estimate the cost — can you count the characters in this text for me: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit...' (full document)?”
Form field validation helper
“My form only allows 280 characters in the bio field. Can you count the characters in this bio text and tell me if it fits: 'I am a software engineer based in San Francisco with 10 years of experience building distributed systems and open-source tools.'?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-token/characters/t8?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, fast, pay-per-call character count for text up to 50,000 characters and are already operating within the x402/Base payment ecosystem. Ideal for agents that need to batch-check text lengths at scale without a subscription.
Side effects
- Text exceeds 50,000 character limit — request rejected
- Empty text field — validation error returned
- Payment not processed via x402 — 402 Payment Required returned
- Malformed JSON body — 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Text up to 50000 characters |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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