autoplan

autoplan is a skill for Claude Code from implicit-labs/autosymph. It costs 50 tokens per session (6,821 once invoked), scanned A, original, MIT.

A feature-planning workflow that researches a request, asks questions, examines risks, and produces a product requirements document.

In plain words
What is it for?
Use it for structured planning through research, interviews, a premortem, PRD writing, and optional cross-agent review.
Why use it?
It turns a broad feature idea or Linear issue into a clearer implementation plan. It also supports review and optional automated interview steps.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions subagents; names the AskUserQuestion tool; runs codex exec.

Good fit Use it for structured planning through research, interviews, a premortem, PRD writing, and optional cross-agent review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/implicit-labs/autosymph/autoplan
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.

Any agent
npx skills add implicit-labs/autosymph --skill autoplan
Clone the repo
git clone --depth 1 https://github.com/implicit-labs/autosymph

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 autoplan

README.md
[![agentmods](https://agentmods.dev/badge/skills/implicit-labs/autosymph/autoplan/github.svg)](https://agentmods.dev/skills/implicit-labs/autosymph/autoplan)
Your own site
<a href="https://agentmods.dev/skills/implicit-labs/autosymph/autoplan"><img src="https://agentmods.dev/badge/skills/implicit-labs/autosymph/autoplan/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 autoplan

Your own site · 80×15
<a href="https://agentmods.dev/skills/implicit-labs/autosymph/autoplan"><img src="https://agentmods.dev/badge/skills/implicit-labs/autosymph/autoplan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,821 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.06821
Opus 5.5 $0.00020 $0.02728
Sonnet 5.5 $0.00010 $0.01364
Haiku 4.5 $0.00005 $0.00682

Measured 2mo ago against content hash 64f7a3bcb0f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

autoplan scanned grade A with 1 finding 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 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (test.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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

If the description or any comment contains image attachments (Linear renders them as `![...](https://uploads.linear.app/...)` markdown), pull them in with `mcp__linear__extract_images` (pass the markdown). Do NOT `curl`
skills/autoplan/SKILL.md · 590 lines

How it starts

The opening of the file, as written. The whole thing — 590 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Phase Orchestrator

Research, Interview, Premortem, PRD, (optional) cross-harness review.

Input: $ARGUMENTS — Linear issue ID (like "ISSUE-123") or feature description, plus optional flags.

Skills used: codebase-explore, documentation-explore, web-research (optional)

Flags: Parsed from $ARGUMENTS. Flags can appear anywhere in the arguments.

Flag Variable Default Effect
claude-codex harness preset default Claude plans, Codex answers automated questions, Codex reviews first
codex-claude harness preset none Codex plans, Claude answers automated questions, Claude reviews first
codex harness preset none Short alias for codex-claude; /autoplan codex ... flips the harnesses
--auto IS_AUTO false Configured question harness answers interview questions instead of user
--codex-review IS_CODEX_REVIEW false Enables review loop after drafting (review harness first; opposite harness fallback if unavailable)
--skip-planning-transition IS_SKIP_PLANNING_TRANSITION false Skips Step-1 move to Linear "Planning". Use when caller is autosymph-autoplan, where the issue already lives in "Autoplan" and stays there until Step 7.7 moves it to "Ready".
`--planner-harness=claude codex` PLANNER_HARNESS preset default (claude)
`--question-harness=codex claude` QUESTION_HARNESS preset default (codex)
`--review-harness=codex claude` REVIEW_HARNESS preset default (codex)
--codex-model=<id> CODEX_MODEL gpt-5.4 Model passed to codex exec -m <id>. If gpt-5.4 is deprecated, override here.
--claude-review-model=<id> CLAUDE_REVIEW_MODEL claude-opus-4-7 Model used by the Claude-as-reviewer fallback Agent when Codex is unavailable.

Mode matrix:

Flags Interview Review Use case
(none) User answers No review Quick planning with user
--auto Preset question harness answers No review Headless autoplan, no human
--codex-review User answers Configured review harness loop Formal planning with user
--auto --codex-review Preset question harness answers Configured review harness loop Full autonomous planning
codex --auto --codex-review Claude answers Claude loop over Codex plan Full autonomous planning with flipped harnesses
--auto --codex-review --skip-planning-transition Preset question harness answers Configured review harness loop Headless under autosymph "Autoplan" Linear state (ISSUE-123)

Pipeline context: See WORKFLOW.md for the full Triage → Done pipeline. Permissions: See PERMISSIONS.md for the allow-list needed to run autonomously.


Read the full file on GitHub · 590 lines

Files

What ships with it

3 files 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. 2mo ago First seen · 590 lines · 50 tokens per session scan A 64f7a3bcb0f5

Subscribe to this mod's changes

autoplan is a skill published in the GitHub repository implicit-labs/autosymph (5 stars, last pushed 2mo ago), licensed MIT. It adds 50 tokens to every session and 6,821 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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