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