Claude / AI Integration

[
  {
    "name": "generate_article",
    "description": "Generate an SEO-optimized article on a given topic using the Brainpercent API. Returns an article ID that can be polled for status. Costs 40 credits.",
    "input_schema": {
      "type": "object",
      "properties": {
        "topic": {
          "type": "string",
          "description": "The article topic or title (3-500 characters)"
        },
        "keywords": {
          "type": "array",
          "items": { "type": "string" },
          "description": "Target SEO keywords (max 20)"
        },
        "tone": {
          "type": "string",
          "enum": ["professional", "casual", "academic", "conversational"],
          "description": "Writing tone for the article"
        },
        "length": {
          "type": "string",
          "enum": ["short", "medium", "long"],
          "description": "Target article length"
        }
      },
      "required": ["topic"]
    }
  },
  {
    "name": "check_article_status",
    "description": "Check the generation progress of an article. Poll until status is 'draft', 'published', or 'failed'.",
    "input_schema": {
      "type": "object",
      "properties": {
        "article_id": {
          "type": "string",
          "description": "The article ID returned from generate_article"
        }
      },
      "required": ["article_id"]
    }
  },
  {
    "name": "generate_social_content",
    "description": "Generate social media posts from a source URL for one or more platforms. Costs 9 credits per platform.",
    "input_schema": {
      "type": "object",
      "properties": {
        "source_url": {
          "type": "string",
          "description": "URL of the source article"
        },
        "platforms": {
          "type": "array",
          "items": {
            "type": "string",
            "enum": ["twitter", "linkedin", "facebook", "instagram"]
          },
          "description": "Target social media platforms"
        },
        "tone": {
          "type": "string",
          "enum": ["professional", "casual", "humorous", "informative"],
          "description": "Writing tone"
        }
      },
      "required": ["source_url", "platforms"]
    }
  },
  {
    "name": "check_credits",
    "description": "Check the current credit balance and plan details.",
    "input_schema": {
      "type": "object",
      "properties": {},
      "required": []
    }
  },
  {
    "name": "list_articles",
    "description": "List existing articles with optional filters.",
    "input_schema": {
      "type": "object",
      "properties": {
        "status": {
          "type": "string",
          "enum": ["draft", "published", "scheduled", "generating", "failed"],
          "description": "Filter by article status"
        },
        "limit": {
          "type": "integer",
          "description": "Number of results (1-100)",
          "default": 20
        }
      }
    }
  }
]

import Anthropic from '@anthropic-ai/sdk';

const anthropic = new Anthropic();
const BP_API_KEY = 'bp_your_key';
const BP_BASE = 'https://brainpercent.app/api/v1';

async function callBrainpercent(method, path, body) {
  const options = {
    method,
    headers: {
      'Authorization': `Bearer ${BP_API_KEY}`,
      'Content-Type': 'application/json',
    },
  };
  if (body && method !== 'GET') options.body = JSON.stringify(body);
  const res = await fetch(`${BP_BASE}${path}`, options);
  return res.json();
}

async function executeTool(name, input) {
  switch (name) {
    case 'generate_article':
      return callBrainpercent('POST', '/articles/generate', input);
    case 'check_article_status':
      return callBrainpercent('GET', `/articles/${input.article_id}/status`);
    case 'generate_social_content':
      return callBrainpercent('POST', '/social/generate', input);
    case 'check_credits':
      return callBrainpercent('GET', '/user/credits');
    case 'list_articles':
      const params = new URLSearchParams();
      if (input.status) params.set('status', input.status);
      if (input.limit) params.set('limit', input.limit.toString());
      return callBrainpercent('GET', `/articles?${params}`);
    default:
      return { error: `Unknown tool: ${name}` };
  }
}

const tools = [ /* tool definitions from above */ ];

async function chat(userMessage) {
  const messages = [{ role: 'user', content: userMessage }];

  while (true) {
    const response = await anthropic.messages.create({
      model: 'claude-sonnet-4-6',
      max_tokens: 4096,
      tools,
      messages,
    });

    // If no tool use, return the text response
    if (response.stop_reason === 'end_turn') {
      return response.content
        .filter(block => block.type === 'text')
        .map(block => block.text)
        .join('');
    }

    // Execute tool calls
    const toolResults = [];
    for (const block of response.content) {
      if (block.type === 'tool_use') {
        const result = await executeTool(block.name, block.input);
        toolResults.push({
          type: 'tool_result',
          tool_use_id: block.id,
          content: JSON.stringify(result),
        });
      }
    }

    // Add assistant response and tool results
    messages.push({ role: 'assistant', content: response.content });
    messages.push({ role: 'user', content: toolResults });
  }
}

// Example usage
const answer = await chat(
  'Check my credit balance and generate an article about AI trends in 2026 if I have enough credits.'
);
console.log(answer);

{
  "success": true,
  "data": {
    "posts": [
      {
        "platform": "twitter",
        "content": "Sustainable packaging is reshaping the industry. From biodegradable materials to zero-waste designs, brands are innovating fast. Here are the top trends to watch.",
        "character_count": 184
      },
      {
        "platform": "linkedin",
        "content": "The sustainable packaging industry is undergoing a major transformation. In our latest deep-dive, we explore the trends driving change, from plant-based materials to circular economy models. Read the full article to learn how leading brands are reducing their environmental footprint while maintaining product quality.",
        "character_count": 312
      }
    ],
    "credits_used": 18
  }
}

import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';

const server = new Server(
  { name: 'brainpercent', version: '1.0.0' },
  { capabilities: { tools: {} } }
);

server.setRequestHandler('tools/list', async () => ({
  tools: [
    {
      name: 'generate_article',
      description: 'Generate an SEO article via Brainpercent',
      inputSchema: {
        type: 'object',
        properties: {
          topic: { type: 'string', description: 'Article topic' },
          keywords: { type: 'array', items: { type: 'string' } },
          tone: { type: 'string', enum: ['professional', 'casual', 'academic'] },
          length: { type: 'string', enum: ['short', 'medium', 'long'] },
        },
        required: ['topic'],
      },
    },
    // Add more tools for other endpoints...
  ],
}));

server.setRequestHandler('tools/call', async (request) => {
  const { name, arguments: args } = request.params;

  // Route to Brainpercent API
  const response = await fetch('https://brainpercent.app/api/v1/articles/generate', {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.BRAINPERCENT_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(args),
  });

  const result = await response.json();
  return { content: [{ type: 'text', text: JSON.stringify(result, null, 2) }] };
});

const transport = new StdioServerTransport();
await server.connect(transport);