metis-plan-task

metis-plan-task is a skill for Claude Code from gsaranti/pantheon. It costs 21 tokens per session (870 once invoked), scanned A, original, MIT.

A planning command for Metis that turns a task description into an implementation plan. The plan stays in the chat instead of being saved to a file.

In plain words
What is it for?
Use it to plan a backlog item, define the next part of work already in progress, or choose what to plan when no task is provided.
Why use it?
It helps break a development task into an actionable plan while using the project's current Metis notes and backlog.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents; mentions Claude Code.

Install

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.

agentmods
npx agentmods add skills/gsaranti/pantheon/metis-plan-task
Any agent
npx skills add gsaranti/pantheon --skill metis-plan-task
Clone the repo
git clone --depth 1 https://github.com/gsaranti/pantheon

Made for: Claude Code.

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 metis-plan-task

README.md
[![agentmods](https://agentmods.dev/badge/skills/gsaranti/pantheon/metis-plan-task.svg)](https://agentmods.dev/skills/gsaranti/pantheon/metis-plan-task)
Your own site
<a href="https://agentmods.dev/skills/gsaranti/pantheon/metis-plan-task"><img src="https://agentmods.dev/badge/skills/gsaranti/pantheon/metis-plan-task.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 870 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00021 $0.00870
Opus 5 $0.00010 $0.00435
Sonnet 5 $0.00004 $0.00174
Haiku 4.5 $0.00002 $0.00087

Measured 5d ago against content hash d2069c8cf7b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

metis-plan-task 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 5d 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.

plugins/metis/.claude-code/skills/metis-plan-task/SKILL.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/metis-plan-task

Produce one implementation plan for a free-text task description. The plan stays in chat; nothing is written to disk.

Arguments

  • Trailing task — optional. What to plan: a BUILD.md item title, a more specific description of the next slice of an item already in progress, or free text. An item can take more than one plan → implement → review task to finish, so the argument can be narrower than the whole item; CURRENT.md carries what's left of an in-progress item.
  • No argument — present the To build items as a pick-one selector, with the active task from CURRENT.md (the item in flight, or next up) as the recommended first option and an escape hatch for free text. Wait for the pick before planning. If there is no backlog and nothing active, ask plainly what to plan.

Context expected from session-start

.metis/CURRENT.md, .metis/SYNTHESIS.md, .metis/INDEX.md, and .metis/BUILD.md (when they exist) are expected to be in context already (loaded by /metis-session-start). SYNTHESIS.md is what's being built; BUILD.md holds the item's backlog entry; CURRENT.md's Active task and Current state say which item is live and, for an item already in progress, what's done and what's next; INDEX.md is the concept → source-doc map for finding the passages an item points at.

If any is missing — the session began without a session-start — read them lazily as the plan turns on them. Subsequent turns are cache hits.

Load (task-specific)

  • The source-doc passages or code seams the item points at. Use the item's doc links (and .metis/INDEX.md for concepts it names) to resolve source-doc paths, then read the docs there — that is where the architectural reasoning the plan must respect lives.
  • .metis/CURRENT.md's Current state, when planning the next task of an item already in progress — so the plan covers what remains, not work already done.
  • metis-code-explorer subagent dispatches when the surface is unfamiliar enough that planning would be guessing.
  • metis-domain-researcher subagent when a plan step would commit to a technical choice the corpus does not cover.

Read the full file on GitHub · 53 lines

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.

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. 5d ago First seen · 53 lines · 21 tokens per session scan A d2069c8cf7b9

Subscribe to this mod's changes

metis-plan-task is a skill published in the GitHub repository gsaranti/pantheon (3 stars, last pushed 13d ago), licensed MIT. It adds 21 tokens to every session and 870 once invoked, about $0.0001 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 2026-08-31.

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