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 skills add fiberplane/claude-code-plugins --skill fp-plangit clone --depth 1 https://github.com/fiberplane/claude-code-pluginsWrote 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.
[](https://agentmods.dev/skills/fiberplane/claude-code-plugins/fp-plan)<a href="https://agentmods.dev/skills/fiberplane/claude-code-plugins/fp-plan"><img src="https://agentmods.dev/badge/skills/fiberplane/claude-code-plugins/fp-plan/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.
<a href="https://agentmods.dev/skills/fiberplane/claude-code-plugins/fp-plan"><img src="https://agentmods.dev/badge/skills/fiberplane/claude-code-plugins/fp-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00052 | $0.03027 |
| Opus 5.5 | $0.00021 | $0.01211 |
| Sonnet 5.5 | $0.00010 | $0.00605 |
| Haiku 4.5 | $0.00005 | $0.00303 |
Grade C, and why
fp-plan scanned grade C with 2 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 1mo 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
> curl -fsSL https://setup.fp.dev/install.sh | sh -s Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
> curl -fsSL https://setup.fp.dev/install.sh | sh -s How it starts
The opening of the file, as written. The whole thing — 473 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FP Plan Skill
Create plans and break them down into trackable issues.
Prerequisites
Before using fp commands, check setup:
# Check if fp is installed
fp --version
If fp is not installed, tell the user:
The
fpCLI is not installed. Install it with:curl -fsSL https://setup.fp.dev/install.sh | sh -s
# Check if project is initialized
fp tree
If project is not initialized, ask the user if they want to initialize:
This project hasn't been initialized with fp. Would you like to initialize it?
If yes:
fp init
When This Skill Triggers
- User asks to "create a plan", "break down feature", "design implementation"
- User pastes a Linear, GitHub, or Notion URL (import external issue/doc)
- User runs
/planwith no arguments (interactive plan import from~/.claude/plans/)
Importing from External Sources
Detecting URLs
When user pastes a URL, detect the source and fetch content:
GitHub Issues (github.com/owner/repo/issues/123):
gh issue view <url> --json title,body,labels,state
Linear Issues (linear.app/team/issue/TEAM-123):
Extract the issue ID (e.g., TEAM-123) from the URL, then use the get_issue MCP tool from the Linear server.
Notion Pages (notion.so/...):
Use the notion-fetch MCP tool from the Notion server with the full URL or page ID.
After Fetching
Create an FP issue from the extracted content:
fp issue create \
--title "<extracted title>" \
--description "<extracted body/content>"
Then offer to break it down into subtasks (see Planning Workflow below).
Interactive Plan Import (when /plan invoked alone)
When user runs /plan with no additional text:
-
Check for existing plans:
ls -la ~/.claude/plans/*.md 2>/dev/null -
If plans exist, use
AskUserToolto prompt:Found plans in ~/.claude/plans/:
- moonlit-brewing-lynx.md
- swift-falcon-auth.md
- [Create new plan instead]
Which plan would you like to import?
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.
- 1mo ago First seen · 473 lines · 52 tokens per session scan C a066b73c0675
fp-plan is a skill published in the GitHub repository fiberplane/claude-code-plugins (40 stars, last pushed 8mo ago), licensed MIT. It adds 52 tokens to every session and 3,027 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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