vscode-sidebar-terminal: Skill for Claude Code

.agents/skills/sync-plugin-skills/SKILL.md

sync-plugin-skills is a skill for Claude Code, Codex from s-hiraoku/vscode-sidebar-terminal. It costs 78 tokens per session (851 once invoked), scanned A, original, MIT.

A synchronization workflow that compares the Synapse A2A implementation with its README, usage guides, and plugin skills, then updates the skills to match.

In plain words
What is it for?
Use it after changing Synapse A2A code or documentation, before a release, or when invoking the sync-plugin-skills command.
Why use it?
It reduces outdated agent instructions after CLI, client, feature, or documentation changes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is s-hiraoku/vscode-sidebar-terminal's own configuration. It tells Claude Code and Codex how to work on vscode-sidebar-terminal itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything vscode-sidebar-terminal configures →

Reuse

Borrowing it

Nothing to install: this file belongs to s-hiraoku/vscode-sidebar-terminal. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/s-hiraoku/vscode-sidebar-terminal/main/.agents/skills/sync-plugin-skills/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/s-hiraoku/vscode-sidebar-terminal

Made for: Claude Code, Codex.

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.

agentmods badge for sync-plugin-skills

README.md
[![agentmods](https://agentmods.dev/badge/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills/github.svg)](https://agentmods.dev/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills)
Your own site
<a href="https://agentmods.dev/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills"><img src="https://agentmods.dev/badge/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills/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.

agentmods 80×15 button for sync-plugin-skills

Your own site · 80×15
<a href="https://agentmods.dev/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills"><img src="https://agentmods.dev/badge/skills/s-hiraoku/vscode-sidebar-terminal/sync-plugin-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 851 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Rogue Agent · line 54
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
  • high Rogue Agent · line 56
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
  • medium Agent Snooping · line 42
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00078 $0.00851
Opus 5 $0.00039 $0.00426
Sonnet 5 $0.00016 $0.00170
Haiku 4.5 $0.00008 $0.00085

Measured 11d ago against content hash 7665427e4765, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

sync-plugin-skills 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 11d ago.

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.

.agents/skills/sync-plugin-skills/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sync Plugin Skills

Synchronize plugin skills with the current implementation and documentation.

Purpose

Ensure that skills in plugins/synapse-a2a/skills/ accurately reflect:

  • Current implementation in synapse/ directory
  • README.md documentation
  • Guides in guides/ folder

When to Use

  • After implementing new features or parameters
  • After updating README.md or guides
  • Before releasing a new version
  • When /sync-plugin-skills is invoked

Workflow

Step 1: Gather Current State

Read the following files to understand current implementation and documentation:

  1. Implementation: Key files in synapse/

    • synapse/tools/a2a.py - CLI tool implementation
    • synapse/a2a_client.py - A2A client
    • synapse/cli.py - Main CLI entry point
    • synapse/commands/*.py - Command implementations
  2. Documentation:

    • README.md - Main documentation
    • guides/usage.md - Usage guide
    • guides/settings.md - Settings documentation
  3. Current Skills:

    • plugins/synapse-a2a/skills/synapse-a2a/SKILL.md
    • plugins/synapse-a2a/skills/synapse-a2a/references/*.md

Step 2: Identify Gaps

Compare and identify:

  • New CLI options/parameters not documented in skills
  • Changed command syntax or behavior
  • New features mentioned in README but missing from skills
  • Deprecated or removed features still in skills
  • Endpoint path inconsistencies

Step 3: Update Skills

Update skill files to match current state:

synapse-a2a/SKILL.md:

  • Quick Reference table
  • Command examples
  • Feature descriptions

synapse-a2a/references/commands.md:

  • Full CLI command documentation
  • All options and parameters
  • Example usage

synapse-a2a/references/api.md:

  • Endpoint paths
  • Request/response formats
  • Extension endpoints

Step 4: Verify Consistency

Ensure consistency across:

  • Endpoint paths match between README and skills
  • Command syntax is identical
  • Option names and defaults match implementation
  • Examples use correct syntax

Read the full file on GitHub · 128 lines

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.

  1. 11d ago First seen · 128 lines · 78 tokens per session scan A 7665427e4765

Subscribe to this mod's changes

sync-plugin-skills is a skill published in the GitHub repository s-hiraoku/vscode-sidebar-terminal (21 stars, last pushed yesterday), licensed MIT. It adds 78 tokens to every session and 851 once invoked, about $0.0004 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 2026-09-01.

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