A specification tool that researches a codebase and turns the findings and an interview into a detailed, reviewable software specification. It records assumptions, rules, state changes, and agreements before implementation.

Use it to investigate a codebase, capture unanswered decisions, compare a proposed change with the current system, review the specification adversarially, and produce an implementation-ready document.

It helps expose missing requirements and hidden constraints early, reducing the risk of building the wrong behavior in an existing or new project.

forge — Plugin by alphabravo-oss

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 alphabravo-oss/guild

agentmods

npx agentmods add plugins/alphabravo-oss/guild/forge

Clone the repo

git clone --depth 1 https://github.com/alphabravo-oss/guild

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

forge 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.

plugins/forge/.claude-plugin/plugin.json · 17 lines

What it actually says

{
  "name": "forge",
  "description": "Codebase-aware specification engine for Claude Code. Runs parallel codebase research, then a grounded interview that captures implicit facts as A-AUTO-NNN entries, emits typed Global Invariants / State Transitions / Contracts tables, runs an adversarial spec review at R3.5, then writes a foundry-ready spec with version frontmatter (v2.1) — locked, classified, citation-backed. Detects brownfield, greenfield, and cosmetic modes; brownfield runs produce a flow delta against the existing system. Forge plans. Foundry builds.",
  "version": "4.4.1",
  "author": {
    "name": "AlphaBravo"
  },
  "userConfig": {
    "model": {
      "type": "string",
      "title": "Agent model",
      "description": "Model for this plugin's config-steerable agents. Accepted values: opus, sonnet, haiku, fable, inherit. Leave unset to change nothing — each agent's own model pin governs.",
      "required": false
    }
  }
}

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 · 17 lines scan A dc130391837a

Subscribe to this mod's changes

forge is a plugin published in the GitHub repository alphabravo-oss/guild (2 stars, last pushed 2d 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 Documents Research

forge

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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