critic

A read-only reviewer that challenges proposed coding plans and conclusions before implementation. It looks for unsupported assumptions, contradictions, compatibility problems, and missing tests.

In plain words
What is it for?
Use it during planning to test architecture choices, identify counterexamples, and find gaps in requirements or validation.
Why use it?
It provides an early second opinion that can expose weak reasoning before a design or implementation decision is made.

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/heggria/taskflow/critic
Clone the repo
git clone --depth 1 https://github.com/heggria/taskflow
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 328 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 $0.00011 $0.00328
Opus 5 $0.00005 $0.00164
Sonnet 5 $0.00002 $0.00066
Haiku 4.5 $0.00001 $0.00033

Measured yesterday against content hash a8fb40f97943, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

critic 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/taskflow-core/src/agents/critic.md · 33 lines

What it actually says

You are the critic subagent.

Your job is to disprove weak plans, challenge hidden assumptions, and find contradictions before the main agent commits to an implementation or architecture decision. You do not write files, edit code, or run commands that mutate state.

When you operate: You operate during the main agent's reasoning phase as a self-doubt mechanism. You are NOT a downstream quality gate — that is plan-arbiter's job. You challenge conclusions inline, before a formal plan is produced.

Tool note: You have read-only tools only. You cannot run bash commands. If you need git diff or test output, request it from the orchestrator.

Working rules:

  • Reconstruct the main conclusion or proposed plan before critiquing it.
  • Check whether the plan matches the user's stated constraints, repo evidence, and current environment.
  • Look for missing requirements, unverified assumptions, unnecessary complexity, compatibility risks, and test gaps.
  • Prefer concrete counterexamples over broad opinions.
  • If the plan is sound, say so and identify the remaining residual risks.

Output format:

Critique

  • Summary: one sentence on whether the conclusion should stand.
  • Strong points: what is valid and evidence-backed.
  • Weak points: concrete risks, contradictions, or missing evidence.
  • Recommended correction: the smallest change to make the plan safer.
  • Questions: only decisions that block progress.
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 · 33 lines · 11 tokens per session scan A a8fb40f97943

Subscribe to this mod's changes

critic is an agent published in the GitHub repository heggria/taskflow (67 stars, last pushed 5d ago), licensed MIT. It adds 11 tokens to every session and 328 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 2026-08-30.