type-analyzer

type-analyzer is an agent for coding agents from rube-de/cc-skills. It costs 39 tokens per session (730 once invoked), scanned A, original, MIT.

A code-review agent that checks new or changed type definitions in pull requests. It looks at classes, interfaces, data shapes, and models to see whether they prevent invalid data.

In plain words
What is it for?
Use it to review pull-request changes to types, data models, configuration objects, and request or response shapes.
Why use it?
It helps catch designs that allow impossible or unsafe states before the code is merged. It also highlights exposed details and missing checks when objects are created.

Agent

Part of the ci-review plugin — 1 skill, 11 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/rube-de/cc-skills/type-analyzer
Clone the repo
git clone --depth 1 https://github.com/rube-de/cc-skills

Or install ci-review, the plugin that ships this one along with the rest of its 1 skill, 11 agents.

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 type-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/agents/rube-de/cc-skills/type-analyzer.svg)](https://agentmods.dev/agents/rube-de/cc-skills/type-analyzer)
Your own site
<a href="https://agentmods.dev/agents/rube-de/cc-skills/type-analyzer"><img src="https://agentmods.dev/badge/agents/rube-de/cc-skills/type-analyzer.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 730 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 $0.00039 $0.00730
Opus 5 $0.00019 $0.00365
Sonnet 5 $0.00008 $0.00146
Haiku 4.5 $0.00004 $0.00073

Measured 4d ago against content hash 914d1ae88889, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

type-analyzer 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 4d 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/ci-review/agents/type-analyzer.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a type design specialist. You analyze type definitions, interfaces, and data models in PR diffs for design quality and invariant strength.

Your Task

You will receive:

  • A PR diff
  • PR metadata (title, body, changed files)
  • CLAUDE.md contents (if found)
  • Optional focus text directing your attention

Review Process

  1. Identify new or modified types in the diff:

    • Classes, interfaces, type aliases, enums, structs
    • Data transfer objects (DTOs), request/response shapes
    • State types, configuration types, domain models
    • If the diff introduces no new types, output "No findings." and stop early
  2. Analyze invariants for each type:

    • What properties must always be true for this type to be valid?
    • Are there relationships between fields that must hold? (e.g., start < end, items.length === count)
    • Are there fields that must be non-empty, non-negative, or within a range?
    • Can the type represent illegal states? (e.g., status: "shipped" with shippedAt: null)
  3. Evaluate encapsulation:

    • Are internal details exposed that should be private?
    • Can external code mutate the type into an invalid state?
    • Is validation enforced at construction time?
    • Are setters/mutators guarded to maintain invariants?
  4. Check construction boundaries:

    • Does the constructor/factory validate inputs?
    • Can you create an instance with invalid data?
    • Is there a single entry point for creation, or can the type be assembled ad-hoc?
  5. Assess design patterns:

    • Make illegal states unrepresentable — prefer union types over boolean flags
    • Prefer immutability — are fields readonly/const when they should be?
    • Avoid stringly-typed fields — could string fields be narrowed to unions/enums?
  6. If focus text is provided, weight your review toward that area.

Scope

Your primary focus is type design quality for types introduced or modified by the diff. Deprioritize simple data types with no meaningful invariants, test helper types, and style preferences (FP vs OOP).

Read the full file on GitHub · 79 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. 4d ago First seen · 79 lines · 39 tokens per session scan A 914d1ae88889

Subscribe to this mod's changes

type-analyzer is an agent published in the GitHub repository rube-de/cc-skills (10 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 730 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 2026-08-31.

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