Word Counter API
Analyze text metrics: word count, characters, sentences, paragraphs, and estimated reading time in one call. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"word-counter": {
"url": "https://word-counter.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://word-counter.api.klymax402.com/api/count" \
-H "Content-Type: application/json" \
-d '{"text":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
text_count_words | POST | /api/count | $0.003 | Count words, characters, sentences, paragraphs, and reading time |
text_count_words
Use this when you need to count words, characters, sentences, or paragraphs in text. Returns comprehensive text statistics with reading time estimate.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
text | string | yes | The text to analyze |
Example response:
{"words":250,"characters":1450,"charactersNoSpaces":1200,"sentences":15,"paragraphs":4,"readingTime":1.25}
When to use: content length validation, estimating article reading time, or checking if text meets minimum word count requirements. Essential BEFORE publishing blog posts or submitting content with length constraints.
Not for: language detection (use text_detect_language), sentiment analysis (use text_analyze_sentiment), text comparison (use text_compare_diff).
Example agent prompts
- "Count words, characters, sentences, or paragraphs in text"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT