Agent skill

Webmcp

by qdhenry in qdhenry/Claude-Command-Suite

Implement WebMCP in web projects — add browser-native structured tools for AI agents using imperative JS or declarative HTML APIs.

No licenceAuto-check passedAgent Workflows

Install Webmcp

skills CLI
$ npx skills add qdhenry/Claude-Command-Suite --skill webmcp -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install qdhenry/Claude-Command-Suite webmcp --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/qdhenry/Claude-Command-Suite.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/webmcp .claude/skills/webmcp && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
webmcp
GitHub stars
1.3k
Token cost
~1.1k tokens
SKILL.md length
458 words
Files
15 (incl. references)
Skills in repo
9
Repo updated
First seen
Licence
None found

At a glance

Implement WebMCP in web projects — add browser-native structured tools for AI agents using imperative JS or declarative HTML APIs.

  • Works in 5 steps: Tools must be atomic and composable —… → Accept raw user input — tools should… → Validate in code, not schema — schema… → …
  • Agent Workflows work in your project
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Webmcp is an agent skill from qdhenry/Claude-Command-Suite. Implement WebMCP in web projects — add browser-native structured tools for AI agents using imperative JS or declarative HTML APIs. Full lifecycle from setup through testing and optimization.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 17 other files, including reference files (for example `references/anti-patterns.md`, `references/declarative-api.md` and `references/events-and-css.md`).

It sits in Agent Workflows. It works with JavaScript. The repository describes itself as: Professional slash commands for Claude Code that provide structured workflows for software development tasks including code review, feature creation, security auditing, and…

When your agent uses it

  • Agent Workflows work in your project

Example prompts

  • “/webmcp”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Tools must be atomic and composable — one function per tool, no overlapping tools with nuanced differences. Combine similar tools into one…
  2. Accept raw user input — tools should accept natural strings (e.g., "11:00") not computed values (e.g., minutes-from-midnight). Minimize…
  3. Validate in code, not schema — schema constraints are helpful but not guaranteed. Validate within execute functions and return descriptive…
  4. Update UI before returning — agents use UI state to verify execution. Ensure execute/submit logic updates visible state before resolving.
  5. Positive, verb-first descriptions — describe what the tool does and when to use it. Avoid negations. "Creates a calendar event for a…

What it can do on your machine

Read from SKILL.md and the folder at commit e89b2f0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Webmcp loads about 1.1k tokens when it runs, and up to ~13k if it reads all its reference files. Until then it costs about 49 tokens; SKILL.md has 458 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~49
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~13k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 458 words (~1,064 tokens).

“WebMCP is a browser-native standard that exposes structured tools for AI agents on websites. Instead of screen-scraping, agents interact through typed JavaScript APIs and HTML annotations.”

— opening of SKILL.md by qdhenry
name
webmcp

Read the full SKILL.md on GitHub

Files

SKILL.md and 14 other files (references) in .claude/skills/webmcp of qdhenry/Claude-Command-Suite.

  • SKILL.md
  • references/anti-patterns.md
  • references/declarative-api.md
  • references/events-and-css.md
  • references/imperative-api.md
  • references/testing.md
  • references/tool-design.md
  • templates/declarative-form.md
  • templates/imperative-tool.md
  • workflows/add-declarative-tool.md
  • workflows/add-imperative-tool.md
  • workflows/audit-webmcp.md
  • workflows/debug-webmcp.md
  • workflows/setup-webmcp.md
  • workflows/test-webmcp.md

Open the folder on GitHubat commit e89b2f0

Compare with similar skills

Webmcp next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Webmcp compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Webmcp this skillqdhenry/Claude-Command-Suite1.3k—~1.1kAutomated safety check: PassNone
Open-Science Skill Creatoraipoch/open-science5.5k—~1.7kAutomated safety check: PassApache-2.0
Sync Public DocsCaldis/react-zmage946—~3.3kAutomated safety check: PassMIT
AwslXhinLiang/awsl104—~687Automated safety check: PassApache-2.0
Workflowsopenpi-dev/openpi171—~1kAutomated safety check: PassMIT
Open Dynamic Workflowsxz1220/open-dynamic-workflows104—~2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Webmcp

What does Webmcp do?

Implement WebMCP in web projects — add browser-native structured tools for AI agents using imperative JS or declarative HTML APIs. Webmcp is an agent skill from qdhenry/Claude-Command-Suite. Implement WebMCP in web projects — add browser-native structured tools for AI agents using imperative JS or declarative HTML APIs.

When should I use Webmcp?

Webmcp fits situations like: agent Workflows work in your project.

How do I install Webmcp in Claude Code?

Run `npx skills add qdhenry/Claude-Command-Suite --skill webmcp -a claude-code`. Or copy the skill folder (.claude/skills/webmcp in qdhenry/Claude-Command-Suite) into .claude/skills/webmcp in your project. Claude Code loads it when a task matches its description.

How do I install Webmcp in Codex?

Run `npx skills add qdhenry/Claude-Command-Suite --skill webmcp -a codex`. Or copy the skill folder (.claude/skills/webmcp in qdhenry/Claude-Command-Suite) into .agents/skills/webmcp in your project. Codex loads it when a task matches its description.

Can I use Webmcp in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add qdhenry/Claude-Command-Suite --skill webmcp -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/webmcp, .gemini/skills/webmcp, .github/skills/webmcp and .opencode/skills/webmcp in your project.

What does Webmcp need to run?

SKILL.md names no scripts, command-line tools or credentials: Webmcp is instructions for the agent only.

Does Webmcp access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Webmcp safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Webmcp use?

No licence was found for Webmcp or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Webmcp use?

About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 12k tokens, read only when the agent opens those files.

What are the alternatives to Webmcp?

Skills that share tags, products or a category with Webmcp: Open-Science Skill Creator (aipoch/open-science, 5.5k stars), Sync Public Docs (Caldis/react-zmage, 946 stars), Awsl (XhinLiang/awsl, 104 stars) and Workflows (openpi-dev/openpi, 171 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Webmcp?

qdhenry (a GitHub user) maintains it in qdhenry/Claude-Command-Suite, which has 1,342 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on March 1, 2026.

Source: qdhenry/Claude-Command-Suite on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.