agentmods.dev

chassis CLAUDE.md

A short set of coding rules for the chassis project, including how to define web API endpoints, handle errors, read configuration, and verify changes.

In plain words
What is it for?
Use it when adding or changing API resources, generating scaffolding, handling errors, or running the project's type checks, linting, and tests.
Why use it?
It prevents changes that conflict with the project's existing architecture and requires the project's checks to pass before work is finished.

Instructions file

6 26d ago A scan 201 tokens original MIT
View the source file dvd90/chassis
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 instructions/dvd90/chassis/claude-md
Clone the repo
git clone --depth 1 https://github.com/dvd90/chassis
Per session 201 This file is loaded in full into every session.
When invoked 201 The same file — it is already loaded in full.
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 $0.00201 $0.00201
Opus 5 $0.00101 $0.00101
Sonnet 5 $0.00040 $0.00040
Haiku 4.5 $0.00020 $0.00020

Measured 3d ago against content hash 84a2c17ed891, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

chassis CLAUDE.md 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 3d 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.

CLAUDE.md · 19 lines

What it actually says

CLAUDE.md

This project follows the conventions in AGENTS.md — read it before making changes. Summary of the non-negotiables:

  • Endpoints are @route-decorated methods on a Routable controller; export the class from src/controllers/index.ts to mount it.
  • Respond via req.resHandler (ok, created, notFound, …), never res.status().json().
  • Signal errors by throw new AppError(ERROR_CODES.X, message) — no try/catch in controllers.
  • Only src/config reads process.env.
  • Don't edit src/core/** to build a feature.

Always finish by running npm run verify (typecheck + lint + test) and make it pass before stopping.

Scaffold a new resource with npm run gen <Name>. Full docs in docs/.

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. 3d ago First seen · 19 lines · 201 tokens per session scan A 84a2c17ed891

Subscribe to this mod's changes

chassis CLAUDE.md is an instructions file published in the GitHub repository dvd90/chassis (6 stars, last pushed 26d ago), licensed MIT. It adds 201 tokens to every session, about $0.0010 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.

boilerplateboilerplate-templateexpressnodejsrest-api
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