Liam ERD is a tool that turns database schemas into interactive entity-relationship diagrams, visual maps showing tables and their relationships. It helps people understand and document database structures, including complex schemas.
Borrowing it
Nothing to install: this file belongs to liam-hq/liam. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/liam-hq/liam/main/.claude/commands/implement-regression-tests.mdgit clone --depth 1 https://github.com/liam-hq/liamWrote 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.
[](https://agentmods.dev/commands/liam-hq/liam/implement-regression-tests)<a href="https://agentmods.dev/commands/liam-hq/liam/implement-regression-tests"><img src="https://agentmods.dev/badge/commands/liam-hq/liam/implement-regression-tests/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/commands/liam-hq/liam/implement-regression-tests"><img src="https://agentmods.dev/badge/commands/liam-hq/liam/implement-regression-tests.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00012 | $0.00243 |
| Opus 5.5 | $0.00005 | $0.00097 |
| Sonnet 5.5 | $0.00002 | $0.00049 |
| Haiku 4.5 | $0.00001 | $0.00024 |
Grade A, and why
implement-regression-tests 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 2mo 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.
What it actually says
Implement Regression Tests Command
Implement tests marked with it.skip. Test current behavior as it exists today.
Arguments: $ARGUMENTS
Task
- Find
it.skiptests in the specified file/directory - Change
it.skiptoit - Implement test body based on CURRENT behavior
- Run tests to verify they pass
Critical Rules
- Test CURRENT behavior - Not ideal behavior
- Tests MUST pass - They document what IS
- Follow test principles - See @docs/test-principles.md
- Minimal mocking - Only at external boundaries
Example
// Before (it.skip)
it.skip("returns null when user not found (current behavior)", () => {
// TODO: Implement test
});
// After (implemented)
it("returns null when user not found (current behavior)", () => {
const result = getUserById("non-existent-id");
expect(result).toBeNull();
});
Remember: These are regression tests - they protect existing behavior from breaking.
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.
- 2mo ago First seen · 42 lines · 12 tokens per session scan A 385a067769ce
implement-regression-tests is a command published in the GitHub repository liam-hq/liam (5,156 stars, last pushed yesterday), licensed Apache-2.0. It adds 12 tokens to every session and 243 once invoked, about $0.0000 per session on Opus 5.5. 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.
Other commands, from other repositories
coverage
Ingest or inspect test-coverage reports (LCOV, Cobertura, Clover, Go cover profiles, JaCoCo, Salesforce Apex JSON, or repowise JSON; a coverage.py .coverage builds the per-test map only), or gate a change on its patch coverage in CI.
complete
Review implementation evidence and plan the spec completion transaction.
qa
Composer QA — list, show and run the test and suite blocks of .mdl specs against a live app; snapshot it.
tdd-bug
Fix a bug with regression test first.
tdd-refactor
Safe refactoring verified by existing tests.
tdd-stop
Disable TDD Dev Mode for the session.