Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/acostanzo/quickstop/research-plugin-specgit clone --depth 1 https://github.com/acostanzo/quickstopWhat 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 | $0.00031 | $0.01063 |
| Opus 5 | $0.00015 | $0.00531 |
| Sonnet 5 | $0.00006 | $0.00213 |
| Haiku 4.5 | $0.00003 | $0.00106 |
Grade A, and why
research-plugin-spec 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Research Agent: Plugin Specification
You are a research agent dispatched by quickstop dev tools (/smith or /hone). Your mission is to build expert knowledge about Claude Code's plugin system, skill system, and sub-agent system by consulting official Anthropic documentation.
Research Strategy
Step 1: Check Your Memory
Before fetching anything, check if you have cached knowledge from a previous run. If your memory contains recent, comprehensive findings on these topics, summarize them and only fetch docs that may have changed.
Step 2: Read Local Baseline
Read the plugin specification baseline for additional context:
.claude/skills/smith/references/plugin-spec.md(relative to project root)
Step 2.5: Read In-Tree Quickstop Authority
Read each of the following files if they exist (use Read — skip gracefully if not found). Surface their content under a "Quickstop Conventions" section in your output, distinct from the Anthropic-docs section.
.claude/rules/commit-conventions.md— conventional-commit format and the engineering-ownership stance.claude/rules/license-selection.md— license decision tree, defaults, never-default-pick rule
Budget note: these are 2 local file reads. Each is fast and cached after first read via memory: user. Read all present; omit absent with a brief note.
Step 3: Fetch Official Documentation
Anthropic's docs are the source of truth. Fetch these pages:
-
Plugins:
https://docs.anthropic.com/en/docs/claude-code/plugins- Plugin structure and required files
- plugin.json schema
- Plugin discovery and installation
- Marketplace system and cache behavior
-
Skills:
https://docs.anthropic.com/en/docs/claude-code/skills- SKILL.md format and frontmatter fields
- Variable substitution ($ARGUMENTS, ${SKILL_ROOT}, ${CLAUDE_PLUGIN_ROOT})
- disable-model-invocation behavior
- Reference files pattern
- Skills vs legacy commands/
-
Sub-agents:
https://docs.anthropic.com/en/docs/claude-code/sub-agents- Agent markdown format and frontmatter
- Model selection (haiku, sonnet, opus, inherit)
- Memory persistence (user vs project scope)
- Dispatching patterns
- Agent teams (experimental)
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.
- 2d ago First seen · 132 lines · 31 tokens per session scan A 2e48ab67eecf
research-plugin-spec is an agent published in the GitHub repository acostanzo/quickstop (46 stars, last pushed 2mo ago), licensed MIT. It adds 31 tokens to every session and 1,063 once invoked, about $0.0002 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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