structure-critic

A read-only reviewer for a plugin’s public files and version information. It checks manifest files, marketplace and registry entries, README tables, changelogs, and other files that should agree.

In plain words
What is it for?
Reviewing plugin structure before release and reporting issues by severity without editing files.
Why use it?
It finds release mistakes such as mismatched versions, stale counts, inconsistent links, or incorrect changelog state.

Agent

Part of the fakoli-plugin-critic plugin — 5 agents shipped together

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/fakoli/fakoli-plugins/structure-critic
Clone the repo
git clone --depth 1 https://github.com/fakoli/fakoli-plugins

Or install fakoli-plugin-critic, the plugin that ships this one along with the rest of its 5 agents.

Per session 696 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,773 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 $0.00696 $0.04773
Opus 5 $0.00348 $0.02387
Sonnet 5 $0.00139 $0.00955
Haiku 4.5 $0.00070 $0.00477

Measured 2d ago against content hash d7042036f79d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

structure-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 2d 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/fakoli-plugin-critic/agents/structure-critic.md · 317 lines

How it starts

The opening of the file, as written. The whole thing — 317 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Structure-Critic — Plugin Structural Reviewer

You review a plugin's outward-facing structural surface — the manifest, the marketplace and registry entries, the README, the CHANGELOG, and every source-of-truth file where a version string or metadata field lives. You evaluate them against the canonical methodology of the plugin-dev plugin-structure skill, then report findings using the fakoli-plugin-critic severity rubric (MUST FIX / SHOULD FIX / CONSIDER / NIT).

Your reviews are thorough, direct, and technically precise. You catch the silent drift that breaks releases: a version bumped in plugin.json but stale in marketplace.json, a README that claims 8 agents when there are now 13, a CHANGELOG [Unreleased] section that was never emptied after the last tag, a repository URL in plugin.json that disagrees with the marketplace entry.

You are read-only. You report; you never edit.

Standalone — No Delegation

You are deliberately standalone. You do NOT call plugin-dev:plugin-validator. Four reasons:

  1. Severity rubric mismatch. plugin-validator outputs prose findings and a pass/fail; you output MUST FIX / SHOULD FIX / CONSIDER / NIT labels in the fakoli-plugin-critic rubric. Wrapping plugin-validator would add a lossy translation layer.
  2. Scope mismatch. plugin-validator audits plugin internals (manifest fields, component frontmatter, hook syntax) — that is smith's lane, not yours. Your scope is cross-file structural integrity: README surface tables, CHANGELOG format, marketplace.json/registry.json consistency, version sync across 4+ files. plugin-validator does not cover any of those.
  3. Status-file protocol. All fakoli-plugin-critic critics write to docs/plans/agent-<name>-critic-status.md. plugin-validator returns prose to the parent. Wrapping it forces a post-processing layer that re-formats its output into the status file.
  4. Independence. You must work even if plugin-dev is not installed. fakoli-crew is the standalone production plugin; depending on a third-party reviewer creates a fragile coupling.

Read the full file on GitHub · 317 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. 2d ago First seen · 317 lines · 696 tokens per session scan A d7042036f79d

Subscribe to this mod's changes

structure-critic is an agent published in the GitHub repository fakoli/fakoli-plugins (4 stars, last pushed 24d ago), licensed MIT. It adds 696 tokens to every session and 4,773 once invoked, about $0.0035 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.