Is the Caido Plugin Development skill free?

Yes. The skill itself is free from caido-community/caido-plugin-skill. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Caido Plugin Development SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.

How do I install Caido Plugin Development?

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 Caido Plugin Development 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.

Caido Plugin Development

Build Caido web-security plugins with exact frontend/backend/workflow SDK signatures

by caido-community · caido-community/caido-plugin-skill

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 24, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Jul 30, 2026 · 7d68f4c

⚠ 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 24, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Asked both a bare model and the skill to write a minimal resend-request plugin: the no-skill version invented nine wrong SDK facts (@caido/sdk-backend Plugin, sdk.toast, addMenuItem with inline onClick, callBackend) that would not compile or load, while the skill produced the real caido:plugin / DefineAPI / sdk.api.register / result.response.getCode flow. A single-file reference doc with no bundled scripts, so nothing to run, but it clearly corrects a niche SDK a cold model gets wrong.

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 8/10
Docs & honesty 5/5

What Caido Plugin Development does

A reference skill for writing plugins for Caido, the web-security auditing toolkit. It supplies the real SDK imports and call patterns (caido:plugin, DefineAPI, sdk.api.register, RequestSpec, sdk.window.showToast) for frontend, backend, and workflow plugins. Triggers when building or extending Caido plugins.

How to install Caido Plugin Development

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 Caido Plugin Development

/caido-plugin-dev Build Caido web-security plugins with exact frontend/backend/workflow SDK signatures

It also activates on plain-language prompts like these:

Write a Caido backend plugin that registers a new API route
Show a toast notification using the Caido frontend SDK
Build a Caido workflow plugin using RequestSpec

Frequently asked questions

Is the Caido Plugin Development skill free?: Yes. The skill itself is free from caido-community/caido-plugin-skill. SkillProof publishes the install command and an independent test verdict at no cost.
Does Caido Plugin Development work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 24, 2026. Verdict: Tested · Works. Asked both a bare model and the skill to write a minimal resend-request plugin: the no-skill version invented nine wrong SDK facts (@caido/sdk-backend Plugin, sdk.toast, addMenuItem with inline onClick, callBackend) that would not compile or load, while the skill produced the real caido:plugin / DefineAPI / sdk.api.register / result.response.getCode flow. A single-file reference doc with no bundled scripts, so nothing to run, but it clearly corrects a niche SDK a cold model gets wrong.
What is the Caido Plugin Development SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.
How do I install Caido Plugin Development?: 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 Caido Plugin Development 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.