Manifold Markets MCP Server

Instructions

Implementation Reference

• src/index.ts:939-975 (handler)

  Handler function for 'add_bounty' tool: validates params with AddBountySchema, checks for MANIFOLD_API_KEY, sends POST request to Manifold API to add bounty to the specified market, returns success message.

  case 'add_bounty': {
    const params = AddBountySchema.parse(args);
    const apiKey = process.env.MANIFOLD_API_KEY;
    if (!apiKey) {
      throw new McpError(
        ErrorCode.InternalError,
        'MANIFOLD_API_KEY environment variable is required'
      );
    }
  
    const response = await fetch(`${API_BASE}/v0/market/${params.contractId}/add-bounty`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Authorization: `Key ${apiKey}`,
      },
      body: JSON.stringify({
        amount: params.amount,
      }),
    });
  
    if (!response.ok) {
      throw new McpError(
        ErrorCode.InternalError,
        `Manifold API error: ${response.statusText}`
      );
    }
  
    return {
      content: [
        {
          type: 'text',
          text: 'Bounty added successfully',
        },
      ],
    };
  }

• src/index.ts:112-115 (schema)

  Zod schema for add_bounty tool input: requires contractId (string) and amount (positive finite number).

  const AddBountySchema = z.object({
    contractId: z.string(),
    amount: z.number().positive().finite(),
  });

• src/index.ts:361-372 (registration)

  Tool registration in listTools handler: defines name 'add_bounty', description, and inputSchema matching the Zod schema.

  {
    name: 'add_bounty',
    description: 'Add bounty to a market',
    inputSchema: {
      type: 'object',
      properties: {
        contractId: { type: 'string', description: 'Market ID' },
        amount: { type: 'number', description: 'Amount of mana to add as bounty' }
      },
      required: ['contractId', 'amount']
    }
  },