bmad-agent-builder

bmad-agent-builder is an agent for Claude Code from delorenj/ssbnk. It costs 34 tokens per session (70 once invoked), scanned A, original, MIT.

A conversational tool for creating, examining, and changing agent skills—written instructions that guide coding agents through specific tasks.

In plain words
What is it for?
Use it to create a new agent, analyze an existing one, or edit one through a conversation.
Why use it?
It helps turn an idea for an agent skill into written instructions, or inspect and revise instructions that already exist.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

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/delorenj/ssbnk/bmad-agent-builder
Clone the repo
git clone --depth 1 https://github.com/delorenj/ssbnk

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.

agentmods badge for bmad-agent-builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/delorenj/ssbnk/bmad-agent-builder.svg)](https://agentmods.dev/agents/delorenj/ssbnk/bmad-agent-builder)
Your own site
<a href="https://agentmods.dev/agents/delorenj/ssbnk/bmad-agent-builder"><img src="https://agentmods.dev/badge/agents/delorenj/ssbnk/bmad-agent-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 70 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 $0.00034 $0.00070
Opus 5 $0.00017 $0.00035
Sonnet 5 $0.00007 $0.00014
Haiku 4.5 $0.00003 $0.00007

Measured 5d ago against content hash e4f56426a970, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

bmad-agent-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 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.

.github/agents/bmad-agent-builder.agent.md · 6 lines

What it actually says

LOAD the FULL {project-root}/.agents/skills/bmad-agent-builder/SKILL.md, READ its entire contents and follow its directions exactly!

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. 5d ago First seen · 6 lines · 34 tokens per session scan A e4f56426a970

Subscribe to this mod's changes

bmad-agent-builder is an agent published in the GitHub repository delorenj/ssbnk (2 stars, last pushed 2d ago), licensed MIT. It adds 34 tokens to every session and 70 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 2026-08-31.

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