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"
    }
  }
}

Related MCP server: ai-summarizer

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

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

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