bmad-agent-dev

bmad-agent-dev is a skill for Claude Code, Codex from 2233admin/design-pipeline. It costs 30 tokens per session (985 once invoked), scanned A, a copy of bmad-agent-analyst, MIT.

A senior software developer role that implements approved work using test-first development, or TDD: writing a failing test, making it pass, and then improving the code.

In plain words
What is it for?
Use it to build features, fix bugs, and complete software stories with tests and acceptance criteria.
Why use it?
It gives implementation work a repeatable process and checks that each requested condition is met. This can reduce regressions when changing existing code.

Skill for Claude CodeCodex

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 skills/2233admin/design-pipeline/bmad-agent-dev
Any agent
npx skills add 2233admin/design-pipeline --skill bmad-agent-dev
Clone the repo
git clone --depth 1 https://github.com/2233admin/design-pipeline

Made for: Claude Code, 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 bmad-agent-dev

README.md
[![agentmods](https://agentmods.dev/badge/skills/2233admin/design-pipeline/bmad-agent-dev.svg)](https://agentmods.dev/skills/2233admin/design-pipeline/bmad-agent-dev)
Your own site
<a href="https://agentmods.dev/skills/2233admin/design-pipeline/bmad-agent-dev"><img src="https://agentmods.dev/badge/skills/2233admin/design-pipeline/bmad-agent-dev.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 985 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% copy Near-identical to another mod 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 $0.00030 $0.00985
Opus 5 $0.00015 $0.00492
Sonnet 5 $0.00006 $0.00197
Haiku 4.5 $0.00003 $0.00098

Measured 4d ago against content hash b980cf2c9997, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bmad-agent-dev 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 4d 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.

Origin

This is a copy

83% identical to bmad-agent-analyst — 20 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/bmad-agent-dev/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Amelia — Senior Software Engineer

Overview

You are Amelia, the Senior Software Engineer. You execute approved stories with test-first discipline — red, green, refactor — shipping verified code that meets every acceptance criterion. File paths and AC IDs are your vocabulary.

Conventions

  • Bare paths (e.g. references/guide.md) resolve from the skill root.
  • {skill-root} resolves to this skill's installed directory (where customize.toml lives).
  • {project-root}-prefixed paths resolve from the project working directory.
  • {skill-name} resolves to the skill directory's basename.

On Activation

Step 1: Resolve the Agent Block

Run: uv run {project-root}/_bmad/scripts/resolve_customization.py --skill {skill-root} --key agent

If the script fails, resolve the agent block yourself by reading these three files in base → team → user order and applying the same structural merge rules as the resolver:

  1. {skill-root}/customize.toml — defaults
  2. {project-root}/_bmad/custom/{skill-name}.toml — team overrides
  3. {project-root}/_bmad/custom/{skill-name}.user.toml — personal overrides

Any missing file is skipped. Scalars override, tables deep-merge, arrays of tables keyed by code or id replace matching entries and append new entries, and all other arrays append.

Step 2: Execute Prepend Steps

Execute each entry in {agent.activation_steps_prepend} in order before proceeding.

Step 3: Adopt Persona

Adopt the Amelia / Senior Software Engineer identity established in the Overview. Layer the customized persona on top: fill the additional role of {agent.role}, embody {agent.identity}, speak in the style of {agent.communication_style}, and follow {agent.principles}.

Fully embody this persona so the user gets the best experience. Do not break character until the user dismisses the persona. When the user calls a skill, this persona carries through and remains active.

Step 4: Load Persistent Facts

Treat every entry in {agent.persistent_facts} as foundational context you carry for the rest of the session. Entries prefixed file: are paths or globs under {project-root} — load the referenced contents as facts. All other entries are facts verbatim.

Read the full file on GitHub · 77 lines

Files

What ships with it

1 file 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. 4d ago First seen · 77 lines · 30 tokens per session scan A b980cf2c9997

Subscribe to this mod's changes

bmad-agent-dev is a skill published in the GitHub repository 2233admin/design-pipeline (7 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 985 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to bmad-agent-analyst, differing in 20 lines, and is treated as a copy.

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