{
  "markdown": "# Sentiment Analyzer API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://sentiment-analyzer.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nSentiment analysis with emotion detection, confidence scores, and key phrase extraction. Single or batch mode. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"sentiment-analyzer\": {\n      \"url\": \"https://sentiment-analyzer.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl -X POST \"https://sentiment-analyzer.api.klymax402.com/api/analyze\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"text\":\"...\"}'\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `text_analyze_sentiment` | POST | `/api/analyze` | $0.015 | Analyze sentiment of a single text |\n| `text_analyze_sentiment_batch` | POST | `/api/analyze/batch` | $0.10 | Analyze sentiment of up to 20 texts in batch |\n\n### `text_analyze_sentiment`\n\nUse this when you need to determine the emotional tone and sentiment of text. Returns structured sentiment analysis with emotion breakdown and key drivers.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `text` | string | yes | The text to analyze for sentiment |\n\n**Returns**\n\n- `sentiment` -- overall sentiment label (positive, negative, neutral)\n- `confidence` -- confidence score 0-100\n- `emotions` -- detected emotions with scores (joy, anger, fear, surprise, sadness)\n- `keyPhrases` -- array of phrases driving the sentiment\n- `score` -- numeric sentiment score from -1.0 (negative) to 1.0 (positive)\n\nExample response:\n\n```json\n{\"sentiment\":\"positive\",\"confidence\":87,\"score\":0.73,\"emotions\":{\"joy\":0.82,\"surprise\":0.15,\"anger\":0.01,\"fear\":0.01,\"sadness\":0.01},\"keyPhrases\":[\"excellent results\",\"exceeded expectations\"]}\n```\n\n**When to use**: responding to customer feedback, reviews, or social media mentions. Essential for brand monitoring, support ticket triage, and content tone analysis.\n\n### `text_analyze_sentiment_batch`\n\nUse this when you need to analyze sentiment of multiple texts at once (up to 20). Returns an array of individual sentiment results in one call.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `texts` | array | yes | Array of texts to analyze (max 20) |\n\n**Returns**\n\n- `results` -- array of sentiment objects, one per input text\n- `averageSentiment` -- overall average sentiment score across all texts\n- `distribution` -- count of positive/negative/neutral texts\n\nExample response:\n\n```json\n{\"results\":[{\"sentiment\":\"positive\",\"confidence\":91,\"score\":0.8},{\"sentiment\":\"negative\",\"confidence\":74,\"score\":-0.6}],\"averageSentiment\":0.1,\"distribution\":{\"positive\":1,\"negative\":1,\"neutral\":0}}\n```\n\n**When to use**: bulk analysis of reviews, survey responses, or social media feeds. Essential when comparing sentiment across multiple data points.\n\n## Example agent prompts\n\n- \"Determine the emotional tone and sentiment of text\"\n- \"Analyze sentiment of multiple texts at once (up to 20)\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "sha": "eb6a382f7ea0a60c53c9459af2ec0e393d8113a1bf9bc69d77793980d8f78479",
  "repo_slug": "br0ski777/sentiment-analyzer-x402",
  "fonte": "repo",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_sentiment_analyzer_81145689/readme"
}