GitHub CLI v2.99.0

Attach images and videos to issues and pull requests

The repeatable --attach flag uploads local images and videos and adds them to issue, pull request, or comment bodies. If a body already references the local path, gh replaces it with the uploaded URL; otherwise it appends the attachment:

# Attach files when creating or editing an issue
gh issue create --attach './repro.png#The error state'
gh issue edit 123 --attach ./walkthrough.mp4

# Attach files when creating or editing a pull request
gh pr create --attach ./before.png
gh pr edit 456 --attach ./after.png

# Attach files to comments
gh issue comment 123 --attach ./repro.png
gh pr comment 456 --attach ./result.mp4

Repeat the flag to attach multiple files in a single invocation. Attachments are available on GitHub.com and GitHub Enterprise Cloud.

For more information see https://gh.io/gh-attach and https://github.blog/changelog/2026-09-01-github-cli-media-in-issues-pull-requests-and-comments/

Worktree support extended to gh issue develop

gh issue develop can now create a linked branch and check it out in a new Git worktree, leaving your current working copy unchanged:

# Create a linked branch for an issue and check it out in a worktree
gh issue develop 123 --checkout --worktree /path/to/wt-feature

What's Changed

✨ Features

• Add token and repository metadata required for attachment uploads by @BagToad in #14177
• Add validation for attachable image and video files by @BagToad in #14178
• Rewrite local Markdown references to uploaded attachment URLs by @BagToad in #14179
• Add attachment uploads to GitHub by @BagToad in #14180
• Add repeatable --attach flag parsing and upload orchestration by @BagToad in #14181
• Add --attach to gh pr comment and gh issue comment by @BagToad in #14182
• Add --attach to gh pr create and gh pr edit by @BagToad in #14183
• Add --attach to gh issue create and gh issue edit by @BagToad in #14184
• Add worktree checkout to gh issue develop by @sergiou87 in #14136
• Use text-only spinner output when gh is invoked by a coding agent by @niik in #14191
• Honor PI_CODING_AGENT_DIR for Pi user skills by @tommaso-moro in #14260

🐛 Fixes

• fix(repo sync): explain when the target branch is checked out in another worktree by @williammartin in #14076
• fix(pr merge): safely handle --delete-branch with linked worktrees by @tidy-dev in #14007
• fix(copilot): end the declined-install warning with a newline by @BagToad in #14222
• fix(attach): clarify retry windows and attachment path resolution by @BagToad in #14262
• fix(issue develop): reject non-empty worktree targets before creating a branch by @tidy-dev in #14244
• fix(repo sync): prevent linked-worktree corruption by @sergiou87 in #14060
• fix(view): reject --comments with --json by @BagToad in #14215
• fix(attach): limit batches to 50 files by @BagToad in #14289
• fix(skills): install Codex user skills to ~/.agents/skills by @scarletkc in #14154

📚 Docs & Chores

• Address review feedback across the --attach stack by @BagToad in #14200
• Refactor commands to own attachment flag policy by @BagToad in #14255
• Document attachment support in the gh skill by @BagToad in #14261
• Document gh issue develop --checkout --worktree in the gh skill by @babakks in #14265
• Clarify pull request testing guidance by @williammartin in #14272
• Fix issue triage to apply suspected-spam labels directly by @williammartin in #14271
• Prevent Dependabot from updating agentic-workflow dependencies by @williammartin in #14274
• Modernize Go code with go fix by @BagToad in #14278

:dependabot: Dependencies

• chore(deps): bump google.golang.org/grpc from 1.83.0 to 1.83.1 by @dependabot in #14247
• chore(deps): bump charm.land/bubbletea/v2 from 2.0.8 to 2.0.9 by @dependabot in #14248
• chore(deps): bump the codeql-actions group across 1 directory with 3 updates by @dependabot in #14250
• chore(deps): bump charm.land/bubbles/v2 from 2.1.1 to 2.2.0 by @dependabot in #14249
• chore(deps): bump agentic-workflows to 0.87.5 by @williammartin in #14273
• chore(deps): bump charm.land/bubbles/v2 from 2.2.0 to 2.2.1 by @dependabot in #14275
• chore(deps): bump https://github.com/sigstore/protobuf-specs from 0.5.1 to 0.5.2 by @dependabot in #14258
• chore(deps): bump https://github.com/google/go-containerregistry from 0.21.9 to 0.22.0 by @dependabot in #14267
• chore(deps): bump google.golang.org/grpc from 1.83.1 to 1.83.2 by @dependabot in #14299
• chore(deps): bump azure/login from 3.0.1 to 3.0.2 by @dependabot in #14301
• chore(deps): bump the codeql-actions group with 3 updates by @dependabot in #14300

New Contributors

• @scarletkc made their first contribution in https://github.com/cli/cli/pull/14154

Full Changelog: https://github.com/cli/cli/compare/v2.98.0...v2.99.0