drop_index

Instructions

Implementation Reference

• src/index.ts:103-106 (schema)

  Zod schema for drop_index input validation: requires 'collection' (string) and 'index' (string) fields.

  const dropIndexSchema = z.object({
      collection: z.string().describe("Collection name"),
      index: z.string().describe("Field(s) to remove from query index"),
  });

• src/index.ts:315-327 (registration)

  Tool registration for 'drop_index' in the tools array with name, description, and inputSchema.

  {
      name: "drop_index",
      description: "Remove field(s) from a query index",
      schema: dropIndexSchema,
      inputSchema: {
          type: "object",
          properties: {
              collection: { type: "string", description: "Collection name" },
              index: { type: "string", description: "Field(s) to remove from query index" }
          },
          required: ["collection", "index"]
      }
  },

• src/index.ts:958-977 (handler)

  Handler for drop_index tool. Extracts collection and index args, then executes 'coho removeindex --project ... --space ... <collection> <index>' CLI command.

  case "drop_index": {
      const { collection, index } = args as DropIndexArgs;
      const dropIndexArgs = [
          'removeindex',
          '--project', config.projectId,
          '--space', config.space,
          collection,
          index
      ];
      const result = await executeCohoCommand(dropIndexArgs);
      return {
          content: [
              {
                  type: "text",
                  text: result
              }
          ],
          isError: false
      };
  }

• src/index.ts:529-564 (helper)

  Helper function executeCohoCommand that runs the coho CLI with sanitized admin token. Used by the drop_index handler to execute the removeindex command.

  async function executeCohoCommand(args: string[]): Promise<string> {
      const safeArgs = ['coho', ...args, '--admintoken', '***'];
      console.error(`Executing command: ${safeArgs.join(' ')}`);
      try {
          const { stdout, stderr } = await execFile('coho', [...args, '--admintoken', config.adminToken], {
              timeout: 120000 // 2 minutes timeout for CLI operations
          });
          if (stderr) {
              // Sanitize stderr before logging to avoid token exposure
              const safeSterr = stderr.replace(new RegExp(config.adminToken, 'g'), '***');
              console.error(`Command output to stderr:`, safeSterr);
          }
          console.error(`Command successful`);
          const result = stdout || stderr;
          // Sanitize result to ensure admin token is not exposed
          return result ? result.replace(new RegExp(config.adminToken, 'g'), '***') : result;
      } catch (error: any) {
          // Comprehensive sanitization of all error properties to avoid admin token exposure
          const sanitizeText = (text: string): string => text ? text.replace(new RegExp(config.adminToken, 'g'), '***') : text;
  
          const sanitizedMessage = sanitizeText(error?.message || 'Unknown error');
          const sanitizedCmd = sanitizeText(error?.cmd || '');
          const sanitizedStdout = sanitizeText(error?.stdout || '');
          const sanitizedStderr = sanitizeText(error?.stderr || '');
  
          // Log sanitized error details
          console.error(`Command failed: ${sanitizedMessage}`);
          if (sanitizedCmd) console.error(`Command: ${sanitizedCmd}`);
          if (sanitizedStdout) console.error(`Stdout: ${sanitizedStdout}`);
          if (sanitizedStderr) console.error(`Stderr: ${sanitizedStderr}`);
  
          // Return sanitized error message
          const errorDetails = [sanitizedMessage, sanitizedStderr].filter(Boolean).join(' - ');
          throw new McpError(ErrorCode.InvalidRequest, `Command failed: ${errorDetails}`);
      }
  }