OpenRouter MCP Multimodal Server

Instructions

Implementation Reference

• src/tool-handlers/validate-model.ts:4-25 (handler)

  The implementation of the 'validate_model' tool, which checks if a model ID exists using the model cache.

  export async function handleValidateModel(
    request: { params: { arguments: { model: string } } },
    modelCache: ModelCache,
    apiClient?: OpenRouterAPIClient,
  ) {
    if (!modelCache.isValid() && apiClient) {
      modelCache.setModels(await apiClient.getModels());
    }
  
    if (!modelCache.isValid()) {
      return { content: [{ type: 'text', text: 'No model data available.' }], isError: true };
    }
  
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify({ valid: modelCache.has(request.params.arguments.model) }),
        },
      ],
    };
  }

• src/tool-handlers.ts:108-116 (registration)

  The definition/schema registration for the 'validate_model' tool.

  {
    name: 'validate_model',
    description: 'Check if a model ID exists',
    inputSchema: {
      type: 'object',
      properties: { model: { type: 'string' } },
      required: ['model'],
    },
  },

• src/tool-handlers.ts:160-165 (handler)

  The handler dispatch logic for 'validate_model' inside the main request handler switch statement.

  case 'validate_model':
    return handleValidateModel(
      wrapToolArgs(args as { model: string } | undefined),
      this.modelCache,
      this.apiClient,
    );