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Directory / Claude community plugins (Anthropic) / forge

forge

plugin Software development

Description: Adversarial code hardening for Claude Code. Forge spawns two agents — a Builder and a Breaker — that iterate against each other until the code is unbreakable. The Builder implements a feature, the Breaker writes adversarial tests to prove bugs, and the Builder must fix the implementation without deleting or weakening the tests. The loop continues until the Breaker can't produce a failing test. The result is battle-tested code with a permanent adversarial test suite. Key features: - Evidence-based, not opinion-based. Every issue the Breaker raises must have a failing test that proves the bug. No test, no break. This eliminates false positives and subjective feedback. - Iterative adversarial loop. Builder and Breaker are separate agents that go back and forth for up to N rounds. The Builder cannot dismiss feedback; it must make the failing tests pass. - Adversarial tests are permanent. The Breaker's tests stay in the repo under tests/adversarial/ as a regression suite. Future changes are protected by the same tests that originally caught the bugs. - Automatic checkpoint. Creates a git tag before starting so the entire forge session can be rolled back with one command. - Configurable rounds. Default 5 rounds, adjustable with --rounds N. Stops early if the Breaker can't find issues. - Auto-detects project stack. Reads config files to determine language, test framework, and conventions. Works with Python, TypeScript, Rust, Go, Ruby, and anything with a test runner.
Description from the marketplace entry / plugin manifest.

Information source

Copied from the Claude community plugins (Anthropic) catalog (anthropics/claude-plugins-community), maintained by Anthropic (community submissions).

Links are pinned to commit 06ec7b6 (2026-10-13), the version we synced. Not reviewed by us.

Install

Add the marketplace (once, in Claude Code)
/plugin marketplace add anthropics/claude-plugins-community
In a Claude Code session
/plugin install forge@claude-community
From your shell
claude plugin install forge@claude-community

Commands follow each host's documentation (Claude Code, Claude Cowork docs). gh skill needs GitHub CLI 2.90 or later and is in public preview.

Listed from Anthropic (community submissions)'s catalog, not reviewed by us. Read the source before installing.

Catalog
Claude community plugins (Anthropic) (claude-community)
Information source
marketplace.json in anthropics/claude-plugins-community
Author
Not stated in the source
Source code
UtkarshJain98/forge
Homepage
github.com/UtkarshJain98/forge
License
MIT (repository license)
Repository stars
1 for UtkarshJain98/forge
Added to catalog
2026-03-31
Last change
2026-04-26 (last push to the repo)

What it contains

Hosted in an external repository, so contents are not counted here. See the source link.

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