Bitbucket

Overview

Automate and extend Bitbucket Cloud — Atlassian's Git platform with built-in CI/CD. This skill covers repository management, Bitbucket Pipelines configuration, pull request workflows, branch permissions, deployment environments, the REST API 2.0, webhooks, Jira integration, and merge checks.

Instructions

Step 1: Authentication

typescript
// Bitbucket Cloud uses App Passwords (basic auth) or OAuth 2.0.
// Create an App Password at: https://bitbucket.org/account/settings/app-passwords/

const BB_BASE = "https://api.bitbucket.org/2.0";
const AUTH = Buffer.from(
  `${process.env.BB_USERNAME}:${process.env.BB_APP_PASSWORD}`
).toString("base64");

async function bb(method: string, path: string, body?: any) {
  const res = await fetch(`${BB_BASE}${path}`, {
    method,
    headers: {
      Authorization: `Basic ${AUTH}`,
      "Content-Type": "application/json",
    },
    body: body ? JSON.stringify(body) : undefined,
  });
  if (!res.ok) throw new Error(`BB ${method} ${path}: ${res.status} ${await res.text()}`);
  return res.status === 204 ? null : res.json();
}

Step 2: Repositories

typescript
// Create a repository
const repo = await bb("POST", `/repositories/my-workspace/my-new-repo`, {
  scm: "git",
  is_private: true,
  description: "Backend API service",
  project: { key: "ENG" },
  mainbranch: { name: "main" },
  fork_policy: "no_public_forks",
});

// List, get details, list branches
const repos = await bb("GET", `/repositories/my-workspace?q=project.key="ENG"&sort=-updated_on&pagelen=25`);
const repoInfo = await bb("GET", `/repositories/my-workspace/my-repo`);
const branches = await bb("GET", `/repositories/my-workspace/my-repo/refs/branches?sort=-target.date&pagelen=25`);

// Get file content / browse tree
const fileContent = await fetch(
  `${BB_BASE}/repositories/my-workspace/my-repo/src/main/README.md`,
  { headers: { Authorization: `Basic ${AUTH}` } }
).then(r => r.text());

Step 3: Pull Requests

typescript
// Create a pull request (Jira keys like ENG-142 in description auto-link)
const pr = await bb("POST", `/repositories/my-workspace/my-repo/pullrequests`, {
  title: "feat: add user authentication module",
  description: "Implements OAuth2 login.\n\nCloses ENG-142",
  source: { branch: { name: "feature/auth" } },
  destination: { branch: { name: "main" } },
  close_source_branch: true,
  reviewers: [{ account_id: "5f1234abc..." }],
});

// List, approve, request changes
const openPRs = await bb("GET", `/repositories/my-workspace/my-repo/pullrequests?state=OPEN&pagelen=50`);
await bb("POST", `/repositories/my-workspace/my-repo/pullrequests/${pr.id}/approve`);
await bb("POST", `/repositories/my-workspace/my-repo/pullrequests/${pr.id}/request-changes`);

// Comments (general and inline on a specific file/line)
await bb("POST", `/repositories/my-workspace/my-repo/pullrequests/${pr.id}/comments`, {
  content: { raw: "Looks good! One suggestion on the token expiry logic." },
});
await bb("POST", `/repositories/my-workspace/my-repo/pullrequests/${pr.id}/comments`, {
  content: { raw: "Use `crypto.timingSafeEqual` here to prevent timing attacks." },
  inline: { path: "src/auth/jwt.ts", to: 42 },
});

// Merge: "merge_commit" | "squash" | "fast_forward"
await bb("POST", `/repositories/my-workspace/my-repo/pullrequests/${pr.id}/merge`, {
  merge_strategy: "squash",
  message: "feat: add user authentication module (#142)",
  close_source_branch: true,
});

Step 4: Branch Permissions & Merge Checks

typescript
// Branch permissions require Premium plan. Pattern supports globs: release/*
// Require 2 approvals to merge to main
await bb("POST", `/repositories/my-workspace/my-repo/branch-restrictions`, {
  kind: "require_approvals_to_merge", pattern: "main", value: 2,
});

// Prevent direct pushes (force PRs)
await bb("POST", `/repositories/my-workspace/my-repo/branch-restrictions`, {
  kind: "push", pattern: "main", users: [], groups: [],
});

// Require passing builds and resolved tasks before merge
await bb("POST", `/repositories/my-workspace/my-repo/branch-restrictions`, {
  kind: "require_passing_builds_to_merge", pattern: "main", value: 1,
});
await bb("POST", `/repositories/my-workspace/my-repo/branch-restrictions`, {
  kind: "require_tasks_to_be_completed", pattern: "main",
});

Step 5: Bitbucket Pipelines (CI/CD)

yaml
# bitbucket-pipelines.yml — runs in Docker containers
image: node:20-slim

definitions:
  steps:
    - step: &test
        name: Test
        caches: [node]
        script: [npm ci, npm run lint, npm run test:coverage]
        artifacts: [coverage/**]
    - step: &build
        name: Build
        caches: [node]
        script: [npm ci, npm run build]
        artifacts: [dist/**]

pipelines:
  default:
    - step: *test
  branches:
    main:
      - step: *test
      - step: *build
      - step:
          name: Deploy to Production
          deployment: production
          trigger: manual
          script:
            - pipe: atlassian/aws-ecs-deploy:1.0.0
              variables:
                AWS_ACCESS_KEY_ID: $AWS_ACCESS_KEY_ID
                AWS_SECRET_ACCESS_KEY: $AWS_SECRET_ACCESS_KEY
                AWS_DEFAULT_REGION: "eu-west-1"
                CLUSTER_NAME: "prod-cluster"
                SERVICE_NAME: "api-service"
  pull-requests:
    '**':
      - step: *test
  custom:
    run-migrations:
      - step:
          name: Run Database Migrations
          script: [npm ci, npm run db:migrate]

typescript
// Trigger a custom pipeline via API
const pipeline = await bb("POST", `/repositories/my-workspace/my-repo/pipelines/`, {
  target: {
    type: "pipeline_ref_target", ref_type: "branch", ref_name: "main",
    selector: { type: "custom", pattern: "run-migrations" },
  },
  variables: [{ key: "MIGRATION_TARGET", value: "v2.1.0", secured: false }],
});

// Check status: state.name = "PENDING" | "IN_PROGRESS" | "COMPLETED"
const status = await bb("GET", `/repositories/my-workspace/my-repo/pipelines/${pipeline.uuid}`);
const pipelines = await bb("GET", `/repositories/my-workspace/my-repo/pipelines/?sort=-created_on&pagelen=10`);

Step 6: Deployment Environments & Variables

typescript
// Create environment: type name = "Test" | "Staging" | "Production"
const environment = await bb("POST", `/repositories/my-workspace/my-repo/environments/`, {
  type: "deployment_environment",
  name: "Production",
  environment_type: { type: "deployment_environment_type", name: "Production" },
});

// Pipeline variables (secured=true encrypts, never shown in logs)
await bb("POST", `/repositories/my-workspace/my-repo/pipelines_config/variables/`, {
  key: "AWS_ACCESS_KEY_ID", value: "AKIA...", secured: true,
});

// Per-environment variables
await bb("POST", `/repositories/my-workspace/my-repo/deployments_config/environments/${environment.uuid}/variables`, {
  key: "API_URL", value: "https://api.production.example.com", secured: false,
});

Step 7: Webhooks & Jira Integration

typescript
// Register a webhook
const webhook = await bb("POST", `/repositories/my-workspace/my-repo/hooks`, {
  description: "CI/CD event handler",
  url: "https://your-app.com/webhook/bitbucket",
  active: true,
  events: ["repo:push", "pullrequest:created", "pullrequest:fulfilled"],
});

// Webhook handler — event type is in x-event-key header
app.post("/webhook/bitbucket", (req, res) => {
  res.sendStatus(200);
  const event = req.headers["x-event-key"];
  if (event === "repo:push") console.log(`Push to ${req.body.push.changes[0].new.name}`);
  if (event === "pullrequest:fulfilled") console.log(`PR merged: ${req.body.pullrequest.title}`);
});

// Jira integration: mention keys (ENG-142) in commits/branches/PRs for auto-linking.
// Smart commits: git commit -m "ENG-142 #time 2h #comment Fixed auth bug #done"

Step 8: Code Search & Reports

typescript
// Search code across workspace repositories
const searchResults = await bb("GET",
  `/workspaces/my-workspace/search/code?search_query=${encodeURIComponent('lang:typescript "jwt.verify"')}&pagelen=20`
);

// Commit history, diff, and branch comparison
const commits = await bb("GET", `/repositories/my-workspace/my-repo/commits?pagelen=30`);
const diff = await fetch(`${BB_BASE}/repositories/my-workspace/my-repo/diff/${commitHash}`,
  { headers: { Authorization: `Basic ${AUTH}` } }).then(r => r.text());
const compare = await bb("GET", `/repositories/my-workspace/my-repo/commits?include=main&exclude=release/2.0`);

Examples

Example 1: Set up a new repository with CI/CD and branch protection

User prompt: "Create a new private Bitbucket repository called 'payment-service' in the FINTECH workspace under the PAYMENTS project. Set up a CI pipeline that runs tests on every push, deploys to staging on develop, and requires manual approval for production deploys from main. Protect main with 2 required approvals."

The agent will:

1. Create the repository via POST /repositories/fintech-workspace/payment-service with is_private: true and project: { key: "PAYMENTS" }.
2. Generate a bitbucket-pipelines.yml with test, build, staging deploy, and manual production deploy steps using YAML anchors for reusable step definitions.
3. Add branch restrictions for main: require 2 approvals to merge, block direct pushes, and require passing builds.
4. Set up deployment environments for Staging and Production with appropriate environment variables.

Example 2: Automate PR workflow with Jira integration

User prompt: "Write a script that creates a pull request from the current feature branch to main, adds two reviewers, and links it to the Jira ticket ENG-287. Then set up a webhook to notify our Slack channel when PRs are merged."

The agent will:

1. Detect the current branch name from git.
2. Create a PR via the API with the Jira key ENG-287 in the description for automatic Jira linking, setting close_source_branch: true and adding the two reviewer account IDs.
3. Register a webhook listening for pullrequest:fulfilled events pointing to the team's webhook endpoint.
4. Provide a webhook handler code snippet that parses the merged PR payload and posts a notification to Slack.

Guidelines

• Use App Passwords for scripts and personal integrations; use OAuth 2.0 for shared applications that act on behalf of multiple users.
• Always set close_source_branch: true on pull requests to automatically clean up feature branches after merging.
• Branch permissions (requiring approvals, blocking direct pushes) require the Bitbucket Premium plan; check your workspace plan before configuring restrictions.
• Use --download-archive style tracking with pipeline variables marked secured: true for any secrets; secured variables are encrypted and never exposed in build logs.
• Reference Jira issue keys (e.g., ENG-142) in commit messages, branch names, and PR descriptions to get automatic bidirectional linking between Bitbucket and Jira.