What is html-skills-stop?

A cleanup tool that stops the temporary local server used by interactive HTML tools in the current coding-agent session.

Use it after finishing with interactive HTML editors or other HTML tools that send submitted results back to the coding agent.

It removes the temporary listener and related files when interactive HTML work is finished, so the session does not leave that service running.

html-skills-stop — Skill for Claude Code by f-labs-io

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add f-labs-io/agent-html-skills

Claude Code

/plugin install html-skills

Made for: Claude Code.

Or install html-skills, the plugin that ships this one along with the rest of its 19 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/f-labs-io/agent-html-skills/html-skills-stop/github.svg)](https://agentmods.dev/skills/f-labs-io/agent-html-skills/html-skills-stop)

Your own site

<a href="https://agentmods.dev/skills/f-labs-io/agent-html-skills/html-skills-stop"><img src="https://agentmods.dev/badge/skills/f-labs-io/agent-html-skills/html-skills-stop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/f-labs-io/agent-html-skills/html-skills-stop"><img src="https://agentmods.dev/badge/skills/f-labs-io/agent-html-skills/html-skills-stop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 105 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 422 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00105	$0.00422
Opus 5	$0.00053	$0.00211
Sonnet 5	$0.00021	$0.00084
Haiku 4.5	$0.00011	$0.00042

Measured 7d ago against content hash 36652741b028, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

html-skills-stop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/stop.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/html-skills/skills/html-skills-stop/SKILL.md · 37 lines

What it actually says

html-skills-stop — tear down server mode

Pairs with html-skills-listen. Runs a bundled script that kills this session's receiver and removes its temp files, then stops the Monitor task whose id html-skills-listen saved.

Steps

Run the teardown script with this session's id:
```
bash "${CLAUDE_PLUGIN_ROOT}/skills/html-skills-stop/scripts/stop.sh" "${CLAUDE_SESSION_ID}"
```
Output: KEY=VALUE lines. Always: SID, STATUS. When a Monitor was armed by html-skills-listen and saved, also: MONITOR_ID.
If MONITOR_ID is printed, stop the Monitor task:

Call TaskStop(task_id: "<MONITOR_ID>"). If it fails because the task is already gone, that's fine — continue.
Branch on STATUS:
- STATUS=WEB — Tell the user: ✓ html-skills server was inactive (web mode).
- STATUS=INACTIVE — Tell the user: ✓ html-skills server was already inactive — nothing to stop.
- STATUS=STOPPED — Tell the user: ✓ html-skills server stopped for this session.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/stop.sh 1.3 KB runs code

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

7d ago Changed · +4 lines · -1 tokens per session 36652741b028
11d ago First seen · 33 lines · 106 tokens per session scan A 72a547c774f2

Subscribe to this mod's changes

html-skills-stop is a skill published in the GitHub repository f-labs-io/agent-html-skills (55 stars, last pushed 8d ago), licensed MIT. It adds 105 tokens to every session and 422 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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