adr-003

A rule requiring isolated unit tests for build, delivery, and developer-tooling code. Unit tests check one small piece of code without running the whole system.

In plain words
What is it for?
Use it to guide tests for command handlers, configuration types, static analysis, code generation, retries, and other pipeline modules.
Why use it?
It helps catch failures in CI/CD tools and build components before they affect the wider delivery process.

Cursor rule for Cursor

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 rules/actual-software/actual-cli/adr-003
Clone the repo
git clone --depth 1 https://github.com/actual-software/actual-cli

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 163 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 $0.00000 $0.00163
Opus 5 $0.00000 $0.00081
Sonnet 5 $0.00000 $0.00033
Haiku 4.5 $0.00000 $0.00016

Measured yesterday against content hash d1444e44a5d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

adr-003 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.

.cursor/rules/adr-003.mdc · 10 lines

What it actually says

Adopt Comprehensive Unit Testing Strategy for CI/CD Pipeline Components

Policies

  1. Implement comprehensive unit testing for all CI/CD pipeline components and build tooling modules. Each module in the build, delivery, and tooling infrastructure must include unit tests that validate core functionality in isolation. This includes testing static analysis components (manifests, languages, registry), CLI command handlers (sync, auth, status), UI interaction components (confirm dialogs, file confirmations), generation and tailoring logic, signal processing (language resolver, tree-sitter, IR), API utilities (retry mechanisms), and configuration types. Unit tests should be co-located with source code or in parallel test directories, following Rust's standard testing conventions with #[cfg(test)] modules or separate test files.
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 · 10 lines · 0 tokens per session scan A d1444e44a5d0

Subscribe to this mod's changes

adr-003 is a cursor rule published in the GitHub repository actual-software/actual-cli (7 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 163 tokens. 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.