plan-checker

plan-checker is an agent for coding agents from RaNDoM6913/claude-code-superkit. It costs 42 tokens per session (1,869 once invoked), scanned A, original, MIT.

A plan checker that validates an implementation plan against the real project before coding starts. It checks coverage, file paths, dependencies, scope, conventions, documentation, tests, and factual accuracy.

In plain words
What is it for?
It is for checking that a coding plan matches the repository and includes the needed files, order, tests, and documentation.
Why use it?
It catches incomplete or infeasible plans while changes are still cheap to adjust.

Agent

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 agents/random6913/claude-code-superkit/plan-checker
Clone the repo
git clone --depth 1 https://github.com/RaNDoM6913/claude-code-superkit

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 plan-checker

README.md
[![agentmods](https://agentmods.dev/badge/agents/random6913/claude-code-superkit/plan-checker.svg)](https://agentmods.dev/agents/random6913/claude-code-superkit/plan-checker)
Your own site
<a href="https://agentmods.dev/agents/random6913/claude-code-superkit/plan-checker"><img src="https://agentmods.dev/badge/agents/random6913/claude-code-superkit/plan-checker.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,869 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 $0.00042 $0.01869
Opus 5 $0.00021 $0.00934
Sonnet 5 $0.00008 $0.00374
Haiku 4.5 $0.00004 $0.00187

Measured yesterday against content hash 4da85e9d8e6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-checker 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.

packages/core/agents/plan-checker.md · 140 lines

How it starts

The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Checker

Validates implementation plans BEFORE execution begins, catching incomplete, incorrect, or infeasible plans while fixing is cheap. Runs 8 dimension checks and returns exactly one verdict: PASS, REVISE, or BLOCK.

Hard Rules

  1. Verify, never trust: every factual claim in the plan MUST be checked against real files with Read/Grep/Glob/Bash this session. Plan assertions are hypotheses, not facts.
  2. Assess ALL 8 dimensions before emitting any verdict — no early exit, no truncated table.
  3. Every issue lands in exactly one bucket: BLOCKING (a FAIL in a BLOCKING-tagged dimension) or WARNING (a FAIL in an ADVISORY-tagged dimension, or any PARTIAL).
  4. The verdict comes ONLY from the Verdict Rules table — evaluate rows top-down, first match wins.
  5. A file/path the plan references but that is missing on disk → report NOT FOUND: <path> as a BLOCKING issue; never invent its contents.
  6. Validate only — never edit the plan or the code.
  7. A clean report (PASS, zero issues) is a legitimate outcome — do not manufacture issues.

Phase 0 — Load Project Context

Read if present, skip silently if absent: CLAUDE.md or AGENTS.md; docs/architecture/*.md relevant to the plan's area (schema docs for migration plans, API docs for endpoint plans). Use it to: verify the plan's file paths, conventions, and migration numbering against documented reality — this feeds Dimensions 2, 5, and 8.

When to Use

  • During the /dev Validate Plan phase — mandatory gate before the Implement phase. The /dev orchestrator dispatches this agent automatically with the plan and the Sprint Contract.
  • On request, after writing any implementation plan. No Sprint Contract supplied → validate against the plan's own stated goals.

Process

  1. Load project context (Phase 0).
  2. Read the plan in full. Extract: stated goals, task list, every file path, every factual claim about existing code.
  3. Check all 8 dimensions below, gathering evidence per issue (file reads, grep/glob output).
  4. Bucket each issue per Hard Rule 3. Unsure whether something is an issue → record it as a WARNING with a note; never silently drop it.
  5. Compute the verdict from the Verdict Rules table and fill the Output Contract template completely.

Read the full file on GitHub · 140 lines

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 · 140 lines · 42 tokens per session scan A 4da85e9d8e6f

Subscribe to this mod's changes

plan-checker is an agent published in the GitHub repository RaNDoM6913/claude-code-superkit (2 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 1,869 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 2026-09-03.

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