Jira MCP Server

Instructions

Implementation Reference

• src/index.ts:678-699 (handler)

  The core handler function that executes the tool logic by sending a PUT request to the Jira API to assign the ticket (issue) to the specified accountId.

  async function assignTicket(
    accountId: string,
    issueIdOrKey: string,
  ): Promise<any> {
    try {
      const response = await axios.put(
        `${JIRA_URL}/rest/api/3/issue/${issueIdOrKey}/assignee`,
        {
          accountId,
        },
        {
          headers: getAuthHeaders().headers,
        },
      );
  
      return response.data;
    } catch (error: any) {
      return {
        error: error.response.data,
      };
    }
  }

• src/index.ts:212-224 (schema)

  Input schema definition for the assign_ticket tool, specifying required string parameters accountId and issueIdOrKey.

  inputSchema: {
    type: 'object',
    properties: {
      accountId: {
        type: 'string',
        description: 'The account id of the assignee',
      },
      issueIdOrKey: {
        type: 'string',
        description: 'The issue id or key',
      },
    },
    required: ['accountId', 'issueIdOrKey'],

• src/index.ts:208-226 (registration)

  Tool registration in the MCP tools array, defining the name, description, and input schema.

  {
    name: 'assign_ticket',
    description:
      'Assign a ticket on Jira on the api /rest/api/3/issue/{issueIdOrKey}/assignee. Do not use markdown in your query.',
    inputSchema: {
      type: 'object',
      properties: {
        accountId: {
          type: 'string',
          description: 'The account id of the assignee',
        },
        issueIdOrKey: {
          type: 'string',
          description: 'The issue id or key',
        },
      },
      required: ['accountId', 'issueIdOrKey'],
    },
  },

• src/index.ts:884-901 (handler)

  MCP request handler case that dispatches the assign_ticket tool call, validates inputs, invokes the assignTicket function, and formats the response.

  case 'assign_ticket': {
    const accountId: any = request.params.arguments?.accountId;
    const issueIdOrKey: any = request.params.arguments?.issueIdOrKey;
  
    if (!accountId || !issueIdOrKey) {
      throw new Error('Account id and issue id or key are required');
    }
  
    const response = await assignTicket(accountId, issueIdOrKey);
  
    return {
      content: [
        {
          type: 'text',
          text: 'Ticket assigned : ' + JSON.stringify(response, null, 2),
        },
      ],
    };