convention-eval

A code-review agent that checks a whole codebase against written coding and security rules, then gives a scored report. It is run by the `/align` skill.

In plain words
What is it for?
Use it to review a project’s adherence to its conventions and identify higher-severity issues that need attention.
Why use it?
It helps find places where the code differs from the team’s documented standards, including unsafe error handling, exposed tokens, and inconsistent frontend or backend patterns.

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/ambient-code/platform/convention-eval
Clone the repo
git clone --depth 1 https://github.com/ambient-code/platform

Made for: Claude Code.

Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 975 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 $0.00029 $0.00975
Opus 5 $0.00015 $0.00487
Sonnet 5 $0.00006 $0.00195
Haiku 4.5 $0.00003 $0.00097

Measured yesterday against content hash c4155659eb71, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

convention-eval 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.

.claude/agents/convention-eval.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Convention Evaluation Agent

Evaluate codebase adherence to documented conventions. Produce a scored report.

Context Files

Load these before running checks:

  1. specs/standards/backend/conventions.spec.md
  2. specs/standards/backend/error-handling.spec.md
  3. specs/standards/backend/k8s-client.spec.md
  4. specs/standards/frontend/conventions.spec.md
  5. specs/standards/frontend/react-query.spec.md
  6. specs/standards/control-plane/conventions.spec.md
  7. specs/standards/security/security.spec.md

Checks by Category

Backend (8 checks, weight: 25%)

# Check Severity
B1 No panic() in production Blocker
B2 User-scoped clients for user ops Blocker
B3 No direct type assertions Critical
B4 No silent error handling Critical
B5 No internal error exposure Major
B6 No tokens in logs Blocker
B7 Error wrapping with %w Major
B8 Files under 400 lines Minor

Frontend (8 checks, weight: 25%)

# Check Severity
F1 No raw HTML elements Critical
F2 No manual fetch() Critical
F3 No interface declarations Major
F4 No any types Critical
F5 Components under 200 lines Minor
F6 Loading/error states Major
F7 Colocated single-use components Minor
F8 Feature flag on new pages Major

Operator (7 checks, weight: 20%)

# Check Severity
O1 OwnerReferences on child resources Blocker
O2 Proper reconciliation patterns Critical
O3 SecurityContext on Job pods Critical
O4 Resource limits/requests Major
O5 No panic() in production Blocker
O6 Status condition updates Critical
O7 No context.TODO() Minor

Runner (4 checks, weight: 10%)

# Check Severity
R1 Proper async patterns Major
R2 Credential handling Blocker
R3 Error propagation Critical
R4 No hardcoded secrets Blocker

Read the full file on GitHub · 131 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 · 131 lines · 29 tokens per session scan A c4155659eb71

Subscribe to this mod's changes

convention-eval is an agent published in the GitHub repository ambient-code/platform (129 stars, last pushed 2d ago), licensed MIT. It adds 29 tokens to every session and 975 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.

Related

Other agents, from other repositories