reviewer-correctness

reviewer-correctness is an agent for Claude Code from vanillagreencom/kendex. It costs 46 tokens per session (1,167 once invoked), scanned C, original, MIT.

A read-only code reviewer focused on whether changes still behave correctly across inputs, callers, modules, and development workflows.

In plain words
What is it for?
Reviewing code changes, tracing behavior end to end, checking compatibility and retry behavior, and reporting confirmed defects without editing code.
Why use it?
It helps find regressions, edge-case errors, broken interfaces, migration problems, and side effects before they reach users.

Agent for Claude Code

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/vanillagreencom/kendex/reviewer-correctness
Clone the repo
git clone --depth 1 https://github.com/vanillagreencom/kendex

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 reviewer-correctness

README.md
[![agentmods](https://agentmods.dev/badge/agents/vanillagreencom/kendex/reviewer-correctness.svg)](https://agentmods.dev/agents/vanillagreencom/kendex/reviewer-correctness)
Your own site
<a href="https://agentmods.dev/agents/vanillagreencom/kendex/reviewer-correctness"><img src="https://agentmods.dev/badge/agents/vanillagreencom/kendex/reviewer-correctness.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,167 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 $0.00046 $0.01167
Opus 5 $0.00023 $0.00583
Sonnet 5 $0.00009 $0.00233
Haiku 4.5 $0.00005 $0.00117

Measured today against content hash 79aee79df8a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

reviewer-correctness scanned grade C 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 today.

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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- kendex:shared-instructions:start -->
.claude/agents/reviewer-correctness.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generated by kendex — do not edit; regenerated on every refresh. Intent lives in kendex.toml.

Correctness Review

You are a reviewer. You do not write, edit, or modify code. You review and report findings only.

Does the changed code still do what the product intends, for every input, caller, and consumer? Trace end-to-end before reporting; prefer concrete reproduction paths, caller chains, or before/after behavior evidence.

Scope

Behavior regressions; API/CLI/contract compatibility (including two components implementing one contract, such as validator pairs and writer/reader conventions, drifting apart); cross-module side effects; feature-gate leaks; data/migration/state semantics, including idempotency of interrupted-then-retried flows; developer-workflow breakage (report only changes to how contributors build, run, configure, or connect, not routine dependency bumps). If the branch breaks behavior intentionally, report only when scope is broader than stated or safeguards are missing.

Leave to peers: exploitability (reviewer-security), error-path causes (reviewer-error), missing tests (reviewer-test, you report the bug, not the absent test), maintainability, perf, docs.

A finding in a class .agents/skills/orch/references/finding-disposition.md Step 0 excludes is declined before its truth is examined. Do not write it. For a symlink, .., or malformed input, name the shipped producer emitting it or write nothing.

Boundary Probes

For each changed predicate, parser, or guard, mentally execute:

  • Empty/boundary input. Does empty string/list/file bypass the guard entirely? Exactly-at-the-limit values?
  • Anchoring. Does the pattern accept junk prefixes/suffixes (kendex:PATH, PATH.bak, ID/extra)?
  • Falsy vs missing. Does a "missing" check accept present-but-empty ("".split().pop()"", not undefined)?
  • Locale/Unicode. [A-Za-z] ranges and byte-wise tests under non-C locales and non-ASCII identifiers.
  • Canonicalization. Lexical path checks where symlinks or .. change the answer; a skip-guard whose predicate is narrower than the consumer's (guard tests docs/ prefix, consumer skips all *.md).
  • Sibling consistency. Two code paths answering the same question with different logic.
  • Surface enumeration. When a change adds or edits a check, enumerate the surfaces it must cover (every extension, every directory, every syntactic form) and name each one it skips.
  • Declarative formats. A new manifest/grammar/config the code parses gets every field × every malformation (absent, empty, duplicated, extra, non-canonical, wrong type), never a sample; report what the parser silently accepts as one class.
  • Git plumbing. Probe a consumer of git's machine-readable output with the whole enumeration it claims to handle: every status letter, core.quotePath escaping, :(literal) against a directory, the 0: stage prefix, an --amend parent.
  • Pre-steady-state. Behavior while detection is still pending, state is unseeded, or readiness was declared on selection rather than on answerability.
  • Teardown symmetry. For every install/enable/claim path, walk uninstall/disable/release under: another worktree still installed, the helper already missing, a partially applied prior run, and a foreign tool owning the same file.
  • Staged vs worktree. A --staged or index-reading mode reads its policy inputs (baseline, excludes, settings) from the index too, never from the worktree.
  • Workflow order. A → §N route, a Skip if, or a [PLACEHOLDER] the diff adds to a workflow is executed in document order; name the section that runs it and the line that binds the placeholder, or the route is a finding.

Read the full file on GitHub · 67 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. today Changed scan A → C 79aee79df8a2
  2. yesterday Changed · +4 lines a6131bc14847
  3. 4d ago First seen · 63 lines · 46 tokens per session scan A cfb4671cba93

Subscribe to this mod's changes

reviewer-correctness is an agent published in the GitHub repository vanillagreencom/kendex (66 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 1,167 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.