Linked API MCP

Instructions

Implementation Reference

• src/tools/react-to-post.ts:7-38 (handler)

  ReactToPostTool class: defines the tool name 'react_to_post', LinkedIn operation name, Zod validation schema, and MCP Tool object with inputSchema. Inherits execution logic from OperationTool.

  export class ReactToPostTool extends OperationTool<TReactToPostParams, unknown> {
    public override readonly name = 'react_to_post';
    public override readonly operationName = OPERATION_NAME.reactToPost;
    protected override readonly schema = z.object({
      postUrl: z.string(),
      type: z.enum(['like', 'love', 'celebrate', 'support', 'funny', 'insightful']).or(z.string()),
    });
  
    public override getTool(): Tool {
      return {
        name: this.name,
        description:
          'Allows you to react to a post using any available reaction type (st.reactToPost action).',
        inputSchema: {
          type: 'object',
          properties: {
            postUrl: {
              type: 'string',
              description:
                "LinkedIn URL of the post to react. (e.g., 'https://www.linkedin.com/posts/username_activity-id')",
            },
            type: {
              type: 'string',
              description: 'Enum describing the reaction type.',
              enum: ['like', 'love', 'support', 'celebrate', 'insightful', 'funny'],
            },
          },
          required: ['postUrl', 'type'],
        },
      };
    }
  }

• src/utils/linked-api-tool.ts:39-57 (handler)

  Execute method in OperationTool (base class for ReactToPostTool): finds the LinkedAPI operation matching 'reactToPost' and executes it with input args and progress reporting.

  public override execute({
    linkedapi,
    args,
    workflowTimeout,
    progressToken,
  }: {
    linkedapi: LinkedApi;
    args: TParams;
    workflowTimeout: number;
    progressToken?: string | number;
  }): Promise<TMappedResponse<TResult>> {
    const operation = linkedapi.operations.find(
      (operation) => operation.operationName === this.operationName,
    )! as Operation<TParams, TResult>;
    return executeWithProgress(this.progressCallback, operation, workflowTimeout, {
      params: args,
      progressToken,
    });
  }

• src/tools/react-to-post.ts:10-13 (schema)

  Zod schema for validating react_to_post input parameters: postUrl (string) and type (reaction enum or string).

  protected override readonly schema = z.object({
    postUrl: z.string(),
    type: z.enum(['like', 'love', 'celebrate', 'support', 'funny', 'insightful']).or(z.string()),
  });

• src/linked-api-tools.ts:50-50 (registration)

  Instantiation of ReactToPostTool within the LinkedApiTools constructor's tools array, registering it for use in the MCP server.

  new ReactToPostTool(progressCallback),

• src/linked-api-server.ts:19-19 (registration)

  Initialization of LinkedApiTools in LinkedApiServer, which includes the react_to_post tool among others, for provision to the MCP server.

  this.tools = new LinkedApiTools(progressCallback);