build

A command for completing planned coding tasks one at a time through tests, implementation, verification, and a Git commit. Test-driven development means writing a failing test before the code that makes it pass.

In plain words
What is it for?
Use it to implement the next task from a plan, write and run tests, build the project, and commit each completed increment.
Why use it?
It gives each change a clear verification path and checks for regressions, build failures, and incomplete work. If something fails, it switches to debugging and recovery steps.

Command

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 commands/askwigconsulting/cohort/build
Clone the repo
git clone --depth 1 https://github.com/askwigconsulting/cohort
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 370 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 $0.00016 $0.00370
Opus 5 $0.00008 $0.00185
Sonnet 5 $0.00003 $0.00074
Haiku 4.5 $0.00002 $0.00037

Measured 2d ago against content hash 8886ddc0ca77, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

build 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 2d 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.

canonical/commands/build.md · 42 lines

What it actually says

Invoke the agent-skills:incremental-implementation skill alongside agent-skills:test-driven-development.

Pick the next pending task from the plan. For each task:

  1. Read the task's acceptance criteria
  2. Load relevant context (existing code, patterns, types)
  3. Write a failing test for the expected behavior (RED)
  4. Implement the minimum code to pass the test (GREEN)
  5. Run the full test suite to check for regressions
  6. Run the build to verify compilation
  7. Commit with a descriptive message
  8. Mark the task complete and move to the next one

If any step fails, follow the agent-skills:debugging-and-error-recovery skill.

Worktrees for concurrent writes (in orchestrated work)

When /build is run as a worker task within /crew and multiple writers run in parallel:

  • Use the worktree provided by the coordinator. The coordinator creates a per-task worktree and detached HEAD so your commits don't collide with other workers' .git/index.lock.
  • Never commit to the coordinator's shared checkout. All work happens in your worktree; commits land on the detached HEAD.
  • Build and test against your worktree's scope. The coordinator runs the full suite after integrating your task serially; your job is to verify your task's acceptance criteria within the worktree.

If you are the only writer (sequential tasks, or a single /build invocation), worktrees are optional; commit to the shared branch as usual.

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. 2d ago First seen · 42 lines · 16 tokens per session scan A 8886ddc0ca77

Subscribe to this mod's changes

build is a command published in the GitHub repository askwigconsulting/cohort (2 stars, last pushed 25d ago), licensed MIT. It adds 16 tokens to every session and 370 once invoked, about $0.0001 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.