marketo_update_channel

Instructions

Implementation Reference

• src/index.ts:220-238 (registration)

  Registration of the 'marketo_update_channel' tool on the MCP server via server.tool() with name, description, and Zod schema.

  server.tool(
    'marketo_update_channel',
    'Update an existing channel\'s properties (name, description, type). Cannot change progression statuses after creation.',
    {
      channelId: z.number(),
      name: z.string().optional(),
      description: z.string().optional(),
      type: z.string().optional(),
      applicationId: z.number().optional(),
    },
    tool(async ({ channelId, name, description, type, applicationId }) =>
      makeApiRequest(`/asset/v1/channel/${channelId}.json`, 'POST', {
        name,
        description,
        type,
        applicationId,
      })
    )
  );

• src/index.ts:230-237 (handler)

  Handler function that receives channelId, name, description, type, applicationId and calls makeApiRequest to POST to /asset/v1/channel/{channelId}.json, updating the channel properties.

  tool(async ({ channelId, name, description, type, applicationId }) =>
    makeApiRequest(`/asset/v1/channel/${channelId}.json`, 'POST', {
      name,
      description,
      type,
      applicationId,
    })
  )

• src/index.ts:223-229 (schema)

  Zod schema defining the input parameters: channelId (required number), and optional name, description, type (strings), and applicationId (number).

  {
    channelId: z.number(),
    name: z.string().optional(),
    description: z.string().optional(),
    type: z.string().optional(),
    applicationId: z.number().optional(),
  },

• src/index.ts:23-53 (helper)

  The makeApiRequest helper function that handles authentication token retrieval and executes HTTP requests via axios.

  async function makeApiRequest(
    endpoint: string,
    method: string,
    data?: any,
    contentType: string = 'application/json'
  ) {
    const token = await tokenManager.getToken();
    const headers: Record<string, string> = {
      Authorization: `Bearer ${token}`,
    };
  
    if (contentType) {
      headers['Content-Type'] = contentType;
    }
  
    try {
      const response = await axios({
        url: `${MARKETO_BASE_URL}${endpoint}`,
        method,
        data:
          contentType === 'application/x-www-form-urlencoded'
            ? new URLSearchParams(data).toString()
            : data,
        headers,
      });
      return response.data;
    } catch (error: any) {
      console.error('API request failed:', error.response?.data || error.message);
      throw error;
    }
  }

• src/index.ts:55-74 (helper)

  The tool() wrapper helper that wraps handlers with try/catch and formats responses as MCP text content.

  function tool<T>(handler: (args: T) => Promise<unknown>) {
    return async (args: T) => {
      try {
        const response = await handler(args);
        return {
          content: [{ type: 'text' as const, text: JSON.stringify(response, null, 2) }],
        };
      } catch (error: any) {
        return {
          content: [
            {
              type: 'text' as const,
              text: `Error: ${error.response?.data?.message || error.message}`,
            },
          ],
          isError: true,
        };
      }
    };
  }