Is the OpenTag skill free?

Yes. The skill itself is free from amplifthq/opentag. SkillProof publishes the install command and an independent test verdict at no cost.

What is the OpenTag SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.

How do I install OpenTag?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use OpenTag with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

OpenTag

Set up and troubleshoot the OpenTag CLI that links Slack/GitHub to coding agents

by amplifthq · amplifthq/opentag

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 18, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Jul 30, 2026 · 44c423a

⚠ This skill is no longer available upstream. Our re-check on Aug 10, 2026 couldn't find it any more (repo unreachable/deleted). The test below is what we measured on Jul 18, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Installed @opentag/cli 0.6.0 from npm and ran `opentag --help`: every command the skill documents (setup, start, status, doctor, platforms, executors, config, cancel) exists exactly as described, so the guidance is grounded in the real tool rather than guessed. On a 'set up OpenTag with Slack' task the skill produced the correct install path, verification via `opentag doctor`, the real config location ~/.config/opentag/config.json, and honest limitation notes (OpenClaw cancel=no, foreground process) that a no-skill baseline for this niche tool cannot supply. Frontmatter parses, all five references/*.md and the docs/platforms guides exist, and the copy install ran verbatim from a bare HOME.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 5/5

What OpenTag does

Guides installation, configuration, and debugging of the published @opentag/cli, which connects collaboration platforms (Slack, GitHub, GitLab, Linear, Lark) to a local coding agent. Triggers on OpenTag setup, `opentag start`, missing callbacks, auth errors, or platform credential steps. Enforces safe defaults: user-led credentials, redacted config, foreground process.

How to install OpenTag

Nothing to install: the source repository no longer has this skill. If the author brings it back, our daily re-check will pick it up and the command will reappear here.

Commands — how to trigger OpenTag

/opentag Set up and troubleshoot the OpenTag CLI that links Slack/GitHub to coding agents

It also activates on plain-language prompts like these:

Help me set up OpenTag so Slack messages reach my coding agent.
OpenTag start isn't delivering Slack callbacks, can you debug it?
Configure OpenTag to connect GitHub issues to my local coding agent.

Frequently asked questions

Is the OpenTag skill free?: Yes. The skill itself is free from amplifthq/opentag. SkillProof publishes the install command and an independent test verdict at no cost.
Does OpenTag work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 18, 2026. Verdict: Tested · Works. Installed @opentag/cli 0.6.0 from npm and ran `opentag --help`: every command the skill documents (setup, start, status, doctor, platforms, executors, config, cancel) exists exactly as described, so the guidance is grounded in the real tool rather than guessed. On a 'set up OpenTag with Slack' task the skill produced the correct install path, verification via `opentag doctor`, the real config location ~/.config/opentag/config.json, and honest limitation notes (OpenClaw cancel=no, foreground process) that a no-skill baseline for this niche tool cannot supply. Frontmatter parses, all five references/*.md and the docs/platforms guides exist, and the copy install ran verbatim from a bare HOME.
What is the OpenTag SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
How do I install OpenTag?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use OpenTag with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.