A development workflow for turning project ideas into tested code through brainstorming, planning, execution, and review. TDD, or test-driven development, means writing tests to define expected behavior before implementing it.

Use it to develop features from specifications, run multi-step coding tasks, validate results, and continue work across sessions.

It gives coding-agent sessions a shared process and keeps work connected across multiple sessions. A validation step helps check whether implemented work meets the plan.

bpe — Plugin by MasonEgger

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.

Claude Code

/plugin marketplace add MasonEgger/bpe-claude-code-plugin

agentmods

npx agentmods add plugins/masonegger/bpe-claude-code-plugin/bpe

Clone the repo

git clone --depth 1 https://github.com/MasonEgger/bpe-claude-code-plugin

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

bpe 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.

bpe/.claude-plugin/plugin.json · 14 lines

What it actually says

{
  "name": "bpe",
  "version": "0.6.3",
  "description": "BPE (Brainstorm-Plan-Execute) development workflow: spec-driven TDD, autonomous multi-step runs with a validation gate, and cross-session continuity",
  "author": {
    "name": "Mason Egger",
    "url": "https://mason.dev"
  },
  "repository": "https://github.com/MasonEgger/bpe-claude-code-plugin",
  "license": "MIT",
  "hooks": "./hooks/profile-check.json",
  "keywords": ["workflow", "tdd", "session-management", "autonomous-execution", "orchestration", "subagents", "development"]
}

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.

yesterday First seen · 14 lines scan A eb6493e5a585

Subscribe to this mod's changes

bpe is a plugin published in the GitHub repository MasonEgger/bpe-claude-code-plugin (7 stars, last pushed 9d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Code review Testing Writing and docs

bpe

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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