build-right-execution

build-right-execution is a skill for Codex from pax-k/build-right. It costs 67 tokens per session (2,416 once invoked), scanned A, original, MIT.

A task-execution workflow for coding agents. It breaks work into one bounded task, checks the current state, makes a narrow change, verifies it, and records the result.

In plain words
What is it for?
Use it to work through an issue queue, implement a bug fix, feature, or refactor, verify the result, capture supporting evidence, and update a tracker.
Why use it?
It reduces the risk of making broad changes without proof that they work or updating task status accurately.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions subagents.

Good fit Use it to work through an issue queue, implement a bug fix, feature, or refactor, verify the result, capture supporting evidence, and update a tracker.

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Install with agentmods
npx agentmods add skills/pax-k/build-right/build-right-execution
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.

Any agent
npx skills add pax-k/build-right --skill build-right-execution
Clone the repo
git clone --depth 1 https://github.com/pax-k/build-right

Made for: Codex.

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.

agentmods badge for build-right-execution

README.md
[![agentmods](https://agentmods.dev/badge/skills/pax-k/build-right/build-right-execution/github.svg)](https://agentmods.dev/skills/pax-k/build-right/build-right-execution)
Your own site
<a href="https://agentmods.dev/skills/pax-k/build-right/build-right-execution"><img src="https://agentmods.dev/badge/skills/pax-k/build-right/build-right-execution/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.

agentmods 80×15 button for build-right-execution

Your own site · 80×15
<a href="https://agentmods.dev/skills/pax-k/build-right/build-right-execution"><img src="https://agentmods.dev/badge/skills/pax-k/build-right/build-right-execution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,416 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00067 $0.02416
Opus 5 $0.00034 $0.01208
Sonnet 5 $0.00013 $0.00483
Haiku 4.5 $0.00007 $0.00242

Measured 8d ago against content hash 96db1dc83e6c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

build-right-execution 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 8d ago.

The scan reads SKILL.md. This mod also ships 25 executable files (scripts/complete-planning-work-item.ts, scripts/continue-check.ts, scripts/ensure-openspec.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/build-right-execution/SKILL.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build Right Execution

Use this skill after pre-execution work has produced product truth, MVP scope, operating rules, and an executable task queue.

Core rule:

Do one task.
Prove the current state.
Change narrowly.
Verify with the right evidence.
Update the tracker.
Then move to the next task.

Required Reading

  • Always read references/workflow.md before acting.
  • Read references/gates.md before task selection, after task intake, and before advancing to another task.
  • Always read references/review-and-delegation.md before the review phase. Its Standards, Spec, and correctness/evidence axes apply to every task; trigger rules determine review depth and whether extra independent review is required.
  • Read references/evidence-contract.md before completing or updating a task.
  • Read references/execution-discipline.md after task intake. Select its bug, feature, or refactor lane from the task's existing Type and stated goal; do not add a mandatory task field.
  • Read ../build-right-engineering-principles/references/principles.md before implementation or review when a task touches architecture boundaries, public APIs, package ownership, provider adapters, generated code, error semantics, tests, observability, security, or enforceable policy.
  • Use assets/templates/task-template.md when creating a missing task or splitting an overbroad task.
  • Use bundled helper scripts only through the full Bun command form shown below. Do not rely on PATH aliases or invoke short names such as continue-check as shell commands.
  • Invoke every managed helper used as evidence as its own direct Bun shell command. Do not chain it with &&, ;, pipes, redirects, or trailing commands; the native evidence gate binds success to that isolated invocation.
  • Use the state resolver before selecting a task or advancing through a queue. Report and reconcile its decision before continuing.
  • The managed execution entrypoint performs setup orchestration before calling the separate read-only scripts/continue-check.ts resolver and provider adapter when task bindings exist. Never ask the user to invoke provider setup, validation, progress, synchronization, archive, or any provider command.
  • Use the execution helper for deterministic task, contract, and gate signals. Treat script output as input to judgment, not authority.

Read the full file on GitHub · 232 lines

Files

What ships with it

38 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 232 lines · 67 tokens per session scan A 96db1dc83e6c

Subscribe to this mod's changes

build-right-execution is a skill published in the GitHub repository pax-k/build-right (4 stars, last pushed 1mo ago), licensed MIT. It adds 67 tokens to every session and 2,416 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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