plan-preview

A read-only preview command that reads a planning document and shows which GitHub issues it would create, including labels, milestones, risks, and dependencies.

In plain words
What is it for?
Use it to preview issues from refactoring plans, migration plans, epics, technical-debt lists, or other task documents.
Why use it?
It lets you inspect the proposed issues before anything is created or changed.

Command

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 commands/anettodev/github-planner/plan-preview
Clone the repo
git clone --depth 1 https://github.com/anettodev/github-planner
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 485 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 $0.00000 $0.00485
Opus 5 $0.00000 $0.00243
Sonnet 5 $0.00000 $0.00097
Haiku 4.5 $0.00000 $0.00049

Measured yesterday against content hash 4f8e2fbe126e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-preview 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 yesterday.

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.

src/commands/plan-preview.md · 70 lines

What it actually says

Preview Issues from Planning Document

Parse a planning document and show the issues that would be created, without creating anything. This is a safe, read-only operation.

Arguments: $ARGUMENTS (required — path to planning document, optional: --repo owner/repo)

Steps

1. Load Document

  • Read the file at the provided path
  • Detect document type: refactoring plan, migration plan, epic, tech debt inventory, or generic task list

2. Extract Tasks

Use the plan-to-issues skill to parse the document:

  • Identify each phase, priority item, or numbered task
  • Map task signals to labels
  • Group by phase/priority → milestones
  • Track dependencies between items

3. Display Each Issue

For each extracted issue, show:

---
### Issue: {title}
**Labels**: `refactor`, `priority: high`
**Milestone**: Phase 2: Config Cleanup
**Risk**: MEDIUM — touches build configuration
**Depends on**: Issue "Delete Supabase files"

#### Body Preview:
> ## Summary
> Remove Supabase SPM package and all environment variable references...
>
> ## Tasks
> - [ ] Delete `.remote(url: "...supabase-swift.git"...)` from packages array
> - [ ] Remove NUTRIA_SUPABASE_URL build settings
> ...
>
> ## Files Affected
> | Action | File |
> |---|---|
> | EDIT | `Project.swift` |
---

4. Show Summary Stats

## Summary
- **Total issues**: N
- **By priority**: X critical, Y high, Z medium, W low
- **Milestones**: Phase 1 (N issues), Phase 2 (N), ...
- **Labels used**: cleanup (N), refactor (N), ...
- **Estimated duplicates**: N (will be skipped)

Ready to create? Run: /plan-issues <same-path>

5. Suggest Improvements

If the source document has issues that would produce poor GitHub Issues, flag them:

  • Tasks that are too vague (no concrete steps)
  • Tasks that are too large (> 8 checklist items → suggest splitting)
  • Missing risk assessment
  • Missing file paths
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. yesterday First seen · 70 lines · 0 tokens per session scan A 4f8e2fbe126e

Subscribe to this mod's changes

plan-preview is a command published in the GitHub repository anettodev/github-planner (2 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 485 tokens. 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.