What is build-and-test?

A set of project instructions for building, testing, and debugging a C++ project with CMake. CMake manages builds, while CTest runs automated tests; sanitizers find memory errors and clang-tidy checks code quality.

It guides developers through formatting checks, changed-file checks, full checks, builds, individual tests, AddressSanitizer runs, environment diagnosis, and clang-tidy.

It replaces guesswork about which checks to run and how to interpret common build, test, memory, and CI failures.

How developerz-ai/universal-lsp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to developerz-ai/universal-lsp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/developerz-ai/universal-lsp/main/.claude/skills/build-and-test/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/developerz-ai/universal-lsp

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/developerz-ai/universal-lsp/build-and-test.svg)](https://agentmods.dev/skills/developerz-ai/universal-lsp/build-and-test)

Your own site

<a href="https://agentmods.dev/skills/developerz-ai/universal-lsp/build-and-test"><img src="https://agentmods.dev/badge/skills/developerz-ai/universal-lsp/build-and-test.svg" alt="Measured on agentmods" height="20"></a>

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 523 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.

Model	Per session	Once invoked
Fable 5.1	$0.00061	$0.00523
Opus 5	$0.00030	$0.00262
Sonnet 5	$0.00012	$0.00105
Haiku 4.5	$0.00006	$0.00052

Measured 5d ago against content hash 730ec502be11, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

build-and-test 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 5d 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/skills/build-and-test/SKILL.md · 48 lines

What it actually says

Build and test

Which command

Question	Command
did my edit format + pass the guards?	`bin/check --files <paths>`
do the subsystems I touched still pass?	`bin/check --changed`
is the repo green? (once, before push)	`bin/check`
build only	`bin/dev build [dev\|asan\|release]`
one test	`bin/dev test <regex>`
memory bugs	`bin/dev asan`
environment wrong?	`bin/dev doctor`

Never hand-roll a cmake invocation a preset covers. Never trust a piped exit code — cmd \| tail; echo $? reports tail's status.

Failure → fix

Symptom	Do
`No tests were found`	build first (`bin/dev test` does), and register via `ulsp_add_test`, not bare `add_test`
clangd cannot find a header	`bin/setup` symlinks `compile_commands.json`
a warning fails the build	fix the code. `-Werror` is deliberate; never add a suppression
ASan reports a use-after-free	read the allocation trace, not just the free — arena/pmr lifetimes are the usual cause
a guard fires	the message names the fix. Never an allowlist entry
green locally, red in CI	the parity bug: fix `scripts/lib/gate.ts` and `.github/workflows/ci.yml` together, then `bun test scripts/`

Adding a suite

ulsp_add_test(engine_offsets_test
    SOURCES offsets_test.cpp
    LINK    ulsp::engine)

Name it <subsystem>_* — scripts/lib/affected.ts maps subsystem to CTest regex by prefix, so a differently-named suite silently stops being selected by the scoped tier.

Details: docs/standards/testing.md, docs/standards/dev-loop.md.

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.

5d ago First seen · 48 lines · 0 tokens per session scan A 730ec502be11

Subscribe to this mod's changes

build-and-test is a skill published in the GitHub repository developerz-ai/universal-lsp (0 stars, last pushed 14d ago), licensed Apache-2.0. It adds 61 tokens to every session and 523 once invoked, about $0.0003 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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universal-lsp: Skill for Claude Code