MCP server github-tools

github-tools

GitHub tools for coding agents: issues, boards, pull requests, repositories, releases and Actions.

The tools cover issues, project boards, pull requests and native stacks, repositories, releases and Actions, through the GitHub CLI. One implementation, delivered to each agent harness in the form that suits it best.

Harness	Delivery	Pinned by
OpenCode V2	native plugin (npm package, with skills)	the version in the package
OpenCode V1	native plugin (npm package, no skills)	the version in the package
Claude Code	plugin: MCP server and skills	the release tag, as the ref
Codex	plugin: MCP server and skills	the release tag, as the ref
Grok Build	plugin: MCP server and skills	the release tag, as @ref
Antigravity	plugin: MCP server and skills	the release tag's tree URL
Hermes Agent	native plugin (Python, calls the command line)	the release commit, as the SHA
other MCP host	MCP server from npm	the version in the package

0.3.0 moved the package from craftsamo/agent-github to craft-agent/github-tools and renamed it: npm @craftsamo/github-tools (was @craftsamo/agent-github, now removed from npm), plugin and MCP server github-tools, programs github-tools and github-tools-cli, settings GITHUB_TOOLS_*. Allow rules, plugin installs and MCP configurations written for 0.2.0 change; the tool IDs do not.

The tools need Node.js 24 or later and the GitHub CLI, authenticated as you. docs/conventions.md describes how the tools are named and how they behave.

Install

Install from a release, never from the default branch: a release is a tag whose commit carries the built dist/, and the default branch does not. In the commands below, <version> is a release's version (1.2.3) and <sha> is the commit its tag names:

gh api repos/craft-agent/github-tools/commits/v<version> --jq .sha

OpenCode

OpenCode V2 takes the package and its options in opencode.json:

{
  "plugins": [
    {
      "package": "@craftsamo/github-tools@<version>",
      "options": { "toolsets": ["issues", "pull_requests", "projects"] }
    }
  ],
  "permissions": [{ "action": "github_*", "resource": "*", "effect": "ask" }]
}

OpenCode V1 takes the package as a string, or as a pair with its options:

{
  "plugin": [["@craftsamo/github-tools@<version>", { "toolsets": ["issues", "pull_requests", "projects"] }]],
  "permission": { "github_*": "ask" }
}

OpenCode allows any action no rule names, so the plugin's request is granted silently unless a rule says ask. Read tools never ask, so the github_* glob is safe.

V1 registers no skills. Unpack the package and copy its skills/* folders into ~/.config/opencode/skills/:

npm pack @craftsamo/github-tools@<version>
tar -xzf craftsamo-github-tools-<version>.tgz
mkdir -p ~/.config/opencode/skills
cp -r package/skills/* ~/.config/opencode/skills/
rm -rf package craftsamo-github-tools-<version>.tgz

Claude Code

claude plugin marketplace add craft-agent/github-tools#v<version>
claude plugin install github-tools@craft-agent

Codex

codex plugin marketplace add craft-agent/github-tools --ref v<version>
codex plugin add github-tools@craft-agent

Codex turns - into _ in server names, so it shows the tools as mcp__github_tools__github_issue_*. It starts the MCP server in the plugin's install directory and passes no roots, so the server takes each call's directory from what Codex sends with the call: its sandbox state, which the server asks for, else the one workspace it names.

The plugin declares default_tools_approval_mode = "writes": Codex asks before every tool not marked read-only. A user's [plugins."<plugin>".mcp_servers.<server>] setting can only tighten it. Setting auto there yields prompt (reads asked too), since Codex treats auto and writes as incomparable.

Grok Build

grok plugin install craft-agent/github-tools@v<version> --trust

Grok starts the MCP server in the session's working directory, so inside a clone a bare issue number names an issue of that repository.

Antigravity

Install from the tree of the release tag, never from the default branch, which has no built dist/; Antigravity clones the tag into ~/.gemini/config/plugins/github-tools.

agy plugin install https://github.com/craft-agent/github-tools/tree/v<version>

Hermes Agent

Hermes installs a commit, not a tag, and the plugin installs disabled:

hermes plugins install craft-agent/github-tools --ref <sha>
hermes plugins enable github-tools

If a Hermes gateway is already running, restart it (hermes gateway restart) to load the plugin.

The plugin runs the Node it found when Hermes started. If a version manager removes that version while Hermes runs, a call looks for Node again; when it finds none, restart Hermes from a shell where node runs.

Any other MCP host

Add the server to the host's MCP configuration. Flags go in args:

{
  "mcpServers": {
    "github-tools": {
      "command": "npx",
      "args": ["-y", "@craftsamo/github-tools@<version>", "--toolsets", "issues,pull_requests,projects"]
    }
  }
}

Tools and skills

Each toolset comes with a skill that tells an agent how to use its tools. A skill names its toolset under metadata in its frontmatter (metadata: { toolset: issues }, written as a block). OpenCode V2 and Hermes register it only when the settings register at least one of that toolset's tools, so a profile with the toolset off, or with all its tools removed, does not see it; a skill without a toolset is always registered. Claude Code, Codex, Grok Build and Antigravity install the skill folder whole and pass the settings only to the MCP server, so they list every skill whatever the settings select. OpenCode V1 registers no skills, and its copied skills are all listed too.

Issues (issues)

Tool	What it does	Class
github_issue_read	view one issue in full, or list a repository's issues or a parent's sub-issues, with their issue fields	read
github_issue_create	create an issue with its kind, labels, assignees, milestone, parent and blocked-by issues, issue fields and a board	add
github_issue_edit	change the title, body (or append to it), kind, labels, assignees, milestone or issue fields	overwrite
github_issue_comment	comment on an issue	add
github_issue_close	close with a reason (completed, not_planned, duplicate)	overwrite
github_issue_reopen	reopen a closed issue	overwrite
github_issue_relate	set the parent, sub-issues, blocked-by and blocking issues, sending only what differs	idempotent
github_issue_develop	create a branch on GitHub linked to the issue, or return the one already linked	idempotent

The skill is github-issues, shown as github-tools:github-issues in Claude Code and github-tools:issues in Hermes. An issue's kind is the organization's Issue Type of that name when it defines one, otherwise a type:<kind> label. Issue fields (Priority, Effort, Start date, Target date and any others) are the organization's own, so only an organization's repositories have them; list filters by one with field.<name>:<value> in query.

Pull requests and stacks (pull_requests)

Tool	What it does	Class
github_pr_read	view one pull request in full, list a repository's pull requests, read its checks (waiting up to 45 seconds, with failed job logs) or its diff	read
github_pr_create	open a pull request from a pushed branch, with labels, assignees, reviewers, milestone, closing issues, a board and attachments	add
github_pr_edit	change the title, body (or append to it), base, labels, assignees, reviewers, milestone or closing issues	overwrite
github_pr_comment	comment, with attachments	add
github_pr_review	approve, request changes or comment, with line comments	add
github_pr_ready	mark ready for review, or turn back into a draft	idempotent
github_pr_close	close	overwrite
github_pr_reopen	reopen a closed pull request	overwrite
github_pr_merge	merge, with the open layers below it in a stack when asked	administrative
github_stack_read	view a native stack by its number or a pull request in it, or list a repository's stacks	read
github_stack_link	join pull requests into a stack, or add them on top of one	idempotent
github_stack_unlink	dissolve a stack, leaving its pull requests open	overwrite

The skill is github-pull-requests, shown as github-tools:github-pull-requests in Claude Code and github-tools:pull-requests in Hermes. The tools do not push: push the branch first and pass the commit it pushed as head_sha, so a pull request opens, is reviewed or merges on exactly that commit. Closing issues are kept as Closes #N lines in the body, since GitHub has no other way to link them. Stacks use GitHub's REST stack endpoints, so the gh stack extension is not needed. Attachments need gh 2.99 or newer.

Project boards (projects)

Tool	What it does	Class
github_project_read	view a board with its fields and views, list boards, or item_list a board's items	read
github_project_create	create a board, or reuse the one of that title, with the standard fields and views	idempotent
github_project_field_ensure	add a field, or the missing options of a single select	idempotent
github_project_view_ensure	add a saved view with its fields, columns, grouping and sort	idempotent
github_project_link	link a board to a repository of the same owner	idempotent
github_project_unlink	unlink a board from a repository	idempotent
github_project_item_add	put an issue or pull request on a board, or return its item, with field values	idempotent
github_project_item_create	create a draft item with field values	add
github_project_item_edit	set or clear field values, and change a draft's title and body	overwrite
github_project_item_archive	archive an item	overwrite
github_project_item_unarchive	bring an archived item back	overwrite
github_project_item_convert	turn a draft into an issue, with its kind, labels and milestone	add

The skill is github-projects, shown as github-tools:github-projects in Claude Code and github-tools:projects in Hermes. A board is named by its number, owner/N, URL or title (Roadmap when none is given), and found among the boards linked to the repository, then its organization's, then the viewer's. The token needs the project scope (gh auth refresh -s project). No API sets a roadmap view's date fields, so after github_project_create set the Roadmap view's "Date fields" to Start and Target in the web UI. A column that mirrors an organization's issue field is read like any other, but its value is the issue's own: the board tools refuse to set or clear it, and github_issue_edit does both. github_project_field_ensure with issue_field: true adds such a column, and github_project_create with dates: "issue_fields" uses the issue fields Start date and Target date as an organization board's dates.

Repositories (repos)

Tool	What it does	Class
github_repo_read	view a repository's settings, features, merge settings and the viewer's permission, or list an owner's repositories	read
github_repo_create	create a repository, empty or from a template	administrative
github_repo_edit	change the description, homepage, default branch, topics, features or merge settings	overwrite
github_repo_visibility	make a repository public, private or internal	administrative
github_repo_archive	archive a repository	administrative
github_repo_unarchive	unarchive a repository	overwrite
github_label_read	list a repository's labels	read
github_label_create	create a label	add
github_label_edit	rename, recolor or redescribe a label	overwrite
github_label_delete	delete a label, removing it from every issue and pull request	administrative
github_milestone_read	list a repository's milestones, with progress	read
github_milestone_create	create a milestone	add
github_milestone_edit	change a milestone's title, due date or description, or close or reopen it	overwrite
github_ruleset_read	list the rulesets and classic branch protection, or view one ruleset	read
github_ruleset_create	create a ruleset with its refs, rules and bypass actors	administrative
github_ruleset_edit	replace parts of a ruleset, stopping as stale when it changed since it was read	administrative
github_ruleset_delete	delete a ruleset	administrative

The toolset is off by default: add repos to toolsets. The skill is github-repos, shown as github-tools:github-repos in Claude Code and github-tools:repos in Hermes. Most settings changes need admin permission on the repository, and rulesets on a private repository need a paid plan. Deleting, renaming, transferring or forking a repository is left to the user.

Releases (releases)

Tool	What it does	Class
github_release_read	list a repository's releases, drafts included, or view one by tag with its notes and commit	read
github_release_create	create a draft release, optionally with generated notes	add
github_release_edit	change the title, notes, prerelease flag, latest status or a draft's target	overwrite
github_release_publish	publish a draft, stopping as stale when its commit differs from head_sha	administrative
github_release_delete	delete a release and its assets, keeping its tag	administrative

The toolset is off by default: add releases to toolsets. The skill is github-releases, shown as github-tools:github-releases in Claude Code and github-tools:releases in Hermes. A new release is always a draft; assets are not covered yet.

Actions (actions)

Tool	What it does	Class
github_workflow_read	list a repository's workflows, disabled ones included, or view one with its file at a branch or tag	read
github_run_read	list workflow runs by branch, workflow, status, event or commit, or view one with its jobs and failed logs, waiting while it runs	read
github_workflow_run	start a workflow by hand with its inputs, stopping as stale when the ref differs from head_sha	administrative
github_run_rerun	re-run a finished run's failed jobs, every job, or one job	administrative
github_run_cancel	cancel a queued or running run	administrative

The toolset is off by default: add actions to toolsets. The skill is github-actions, shown as github-tools:github-actions in Claude Code and github-tools:actions in Hermes. Every Actions write asks each time, since a workflow can deploy or publish whatever its name says. Enabling or disabling a workflow, deleting a run and downloading artifacts are not covered yet.

Planning

github-planning adds no tool. It says how to plan with the issue and board tools: when work is one issue or a parent issue with sub-issues, how to size a sub-issue, how steps outside the repository (an approval, a vendor's answer) enter the plan, the form of each body, the order to file in, and what a later change rewrites in a body or says in a comment. It is shown as github-tools:github-planning in Claude Code and github-tools:planning in Hermes. It is linked to the issues toolset, which it cannot work without, and says what to skip when the board tools are off.

Adding a tool

1. Write the spec in src/core/<domain>/<verb>.ts with defineTool: an ID <prefix>_<domain>_<verb>, a title and description, the Zod argument and output schemas, its toolset and write class, and execute(args, context). A write tool also gives targets(args, context): what the call writes to, as a permission rule should name it.
2. Test it beside the spec (<verb>.test.ts), calling it through invoke as the entry points do. A tool that runs a program is tested against a fake of that program on PATH; no test reaches a real service.
3. List it in src/tools.ts. A new toolset goes into toolsets in src/project.ts (and defaultToolsets when it is on by default), a setting of the package's own into options (and OPTIONS in project.py with config_schema in plugin.yaml), and a variable the tool reads besides the settings into toolVariables.
4. Add or update the toolset's skill, skills/<prefix>-<toolset>/SKILL.md, whose frontmatter names the toolset under metadata.
5. Run pnpm run build && pnpm run manifests to list the tool in plugin.yaml and its variables in Codex's manifest, then describe it under "Tools and skills".

docs/conventions.md has the rules each step follows.