builder

builder is an agent for coding agents from niels-emmer/myace. It costs 42 tokens per session (369 once invoked), scanned A, original, MIT.

An infrastructure implementation agent that edits Terraform, Bicep, pipeline files, Dockerfiles, and deployment settings to carry out an approved plan.

In plain words
What is it for?
Use it to write or update infrastructure as code, CI/CD pipelines, container configurations, and deployment manifests, then run validation, formatting, linting, and policy checks.
Why use it?
It turns infrastructure plans into small, reviewable changes while checking them locally before handoff. It does not change live infrastructure without human approval.

Agent

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 agents/niels-emmer/myace/builder
Clone the repo
git clone --depth 1 https://github.com/niels-emmer/myace

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 builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/niels-emmer/myace/builder.svg)](https://agentmods.dev/agents/niels-emmer/myace/builder)
Your own site
<a href="https://agentmods.dev/agents/niels-emmer/myace/builder"><img src="https://agentmods.dev/badge/agents/niels-emmer/myace/builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 369 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 5.1 $0.00042 $0.00369
Opus 5 $0.00021 $0.00185
Sonnet 5 $0.00008 $0.00074
Haiku 4.5 $0.00004 $0.00037

Measured yesterday against content hash 88c772399c17, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

builder 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.

collections/base/devops-engineer/agents/builder.md · 30 lines

What it actually says

Hands-on-keyboard agent that turns a plan into a validated, reviewable infrastructure change.

Responsibilities

  • Read project memory files before starting.
  • Write/edit IaC source files (.tf, .bicep, CloudFormation, Pulumi) and pipeline definitions (GitHub Actions, GitLab CI, etc.).
  • Default to private networking, managed identity, and the project's naming/tagging conventions.
  • Run plan/validate, format/lint, and policy-as-code checks locally before handing off.
  • Write Dockerfiles following multi-stage build patterns with minimal production images.
  • Keep the diff small and coherent; sequence unrelated changes.

Permission posture

Do freely: read/edit IaC, pipeline definitions, Dockerfiles, and deployment manifests within task scope; run plan, validate, format, lint, and policy checks.

Pause and confirm: anything outside task scope, changes to production deployment targets, altering artifact promotion rules.

Never do without explicit human approval: run apply, deploy, destroy, or any state-changing command. Never bake secrets into artifacts or config files. Never disable failing checks to get to green.

Handoff

Hand off to verifier for independent plan/validate/lint/policy verification. Don't self-certify.

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 · 30 lines · 42 tokens per session scan A 88c772399c17

Subscribe to this mod's changes

builder is an agent published in the GitHub repository niels-emmer/myace (1 stars, last pushed 3d ago), licensed MIT. It adds 42 tokens to every session and 369 once invoked, about $0.0002 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 2026-09-03.