Brigade

Brigade is a new Claude Code skill that splits large coding jobs across multiple fresh sessions, assigning each piece of work to a model by risk: Haiku for mechanical, fully specified pieces, Sonnet for bounded modules with clear specs, and Opus for auth, money, data, migrations, concurrency and shared interfaces. Brigade writes a one-time project map to .brigade/context.md (77 lines in the example build), plans waves by file ownership in .brigade/plan.md, and generates prompts only for the next wave, with every job ending in a review prompt for a fresh Opus session that did not write the code. The skill works on any Claude Code plan (Pro, Max, Team) in the terminal and VS Code without an API key, and reruns a failed piece one model up (Haiku, then Sonnet, then Opus), never twice on the same model.

Plan big Claude Code jobs the way a kitchen brigade runs a service: one planner, a station for each part of the work, the right cook at each station, and a final check before anything leaves the pass. Brigade is a Claude Code skill. Give it your project goal and it decides whether the job needs more than one session. If it does, it cuts the work into pieces that each fit in a fresh session, writes a self-contained prompt for each piece, and picks a model for each piece by risk. Every job ends with a review prompt for a fresh session that didn't write the code. It works on any Claude Code plan Pro, Max, Team , in the terminal and in VS Code, and it doesn't need an API key. php flowchart TD G "Your goal or spec" -- D{"Can one session<br/ do this job?"} D -- "yes" -- W "Brigade does the work<br/ in your current session" W -- RP "Writes a review prompt" D -- "no, or you ask it to split" -- M "Map the project once<br/ .brigade/context.md" M -- P "Plan waves by file ownership<br/ .brigade/plan.md" P -- Q "Write prompts for the next wave<br/ .brigade/prompts/NN- .md" Q -- S1 "Fresh session on Opus<br/ skeleton and interfaces" Q -- S2 "Fresh session on Sonnet<br/ a bounded module" Q -- S3 "Fresh session on Haiku<br/ a mechanical piece" S1 -- L "Progress log<br/ .brigade/progress.md" S2 -- L S3 -- L L -- N "/brigade next" N -- Q L -- R "Fresh Opus review<br/ VERDICT plus fix prompt" RP -- R R -- F "One fix session" Brigade is built from six parts. Each one fixes a specific way that big jobs go wrong in a single long session. Each fresh session starts with no memory, and having it re-read the whole codebase is slow and makes it drift from the plan. Brigade writes .brigade/context.md once. It holds the layout, the commands, the conventions, and the interfaces between parts , which act as the contract. Every session reads this map first. In the example build it was 77 lines. Split work breaks when two sessions edit the same file. Every piece in Brigade owns a fixed set of files and may not touch any other. Shared files such as routers and config belong to exactly one piece. Pieces are grouped into waves by dependency. Wave 1 is usually the skeleton and the interfaces; later waves fill in modules behind them. Brigade writes full prompts only for the next wave. When a wave finishes, /brigade next reads what was actually built and writes the next wave's prompts from that. Prompts written before the code exists go stale. Each prompt lists what to read, what to build, which files it owns, the interfaces it must keep, an exact done-check, and when to stop and ask instead of guessing. The hard decisions are made in the prompt, not left to the worker. See a real one https://github.com/rajvardhan19/brigade/blob/main/examples/ledger/prompts/02-importers.md : it pins down money parsing, line numbers in errors, atomic imports and the duplicate rules before any code is written. For each piece Brigade asks two questions: how bad would a mistake be, and would the piece's check catch it right away? | The piece is... | Model | |---|---| | Mechanical, fully specified, mistakes caught by its check | Haiku, low effort | | Bounded with a clear spec and a check that would catch a mistake | Sonnet, medium | | Auth, money, data, migrations, concurrency, interfaces others build on, or a mistake would go unnoticed | Opus, medium | A mistake that a test catches immediately costs one retry. A silent mistake gets built on by every piece that follows. If a piece fails its check, it is rerun one model up Haiku, then Sonnet, then Opus , never twice on the same model. Every choice is written down with its reason in plan.md https://github.com/rajvardhan19/brigade/blob/main/examples/ledger/plan.md . A session reviewing its own work shares its own blind spots. Brigade's last step is a review by an Opus session that never saw the code being written. It reads the plan, the map and the full diff, runs the checks, and lists defects with file:line. It ends with VERDICT: CLEAN or VERDICT: DEFECTS and a ready-to-run fix prompt. .brigade/ ├── context.md the project map and interface contract ├── plan.md waves, file ownership, model per piece and why ├── progress.md what each session reported when it finished └── prompts/ ├── 01-skeleton.md ├── 02-importers.md └── review-final.md Nothing depends on one long conversation surviving. You can stop between any two pieces and pick up later, or hand the remaining pieces to a teammate. Each setup built the same project from the same brief: ledger , a personal-finance toolkit with SQLite storage, two bank CSV importers, a rules engine, budgets and a CLI. One build was a normal Claude Code session Opus 5.5 ; the other was Brigade, split into fresh sessions. Correctness was checked with 32 hidden tests the sessions never saw. Both builds passed all 32 hidden tests and their own test suites. The difference showed up in the edge cases. Brigade's fresh-context review found five ways the code broke the spec, and I then tested both builds against those five inputs: | Input | Normal session | Brigade, after review and fix | |---|---|---| | A 29-digit amount in a bank file | crash with traceback | clean error naming the line | | A 21-digit amount in a bank file | crash with traceback | clean error naming the line | | An amount written in non-ASCII digits | accepted as money | rejected as malformed | | A budget of 1e30 | clean error | clean error | | A rule priority past the 64-bit range | crash with traceback | clean error | | Handled correctly | 1 of 5 | 5 of 5 | The spec said errors must never print a traceback. The normal session broke that rule three times, and its own tests didn't catch it. Read the review that found these https://github.com/rajvardhan19/brigade/blob/main/examples/ledger/review-final-output.md . The architecture held up in practice too: - All four pieces given to Sonnet passed first time, with no escalations. The project map and the self-contained prompts were enough. - Every piece stayed in its lane. Each one's progress report lists only its own files, plus decisions it appended to context.md, and no piece changed an interface. - It knows when not to split. On every job one session could handle, up to that five-module build, Brigade said so and did the work itself. It did this in 5 of 5 runs. - Use it for jobs too big for one session: many subsystems, or long enough that the context fills up. Also use it for risky work where you want a review by a session that didn't write the code. - On small jobs it just does the work and leaves you a review prompt. - Splitting runs more sessions than doing the job in one, so on a job one session could handle it takes longer and uses more of your plan. Ask it to split only when the job needs it. VS Code, one click: paste this link into your browser. Add the marketplace when asked, choose Install for you , and restart Claude when prompted. vscode://anthropic.claude-code/install-plugin?plugin=brigade&marketplace=rajvardhan19/brigade VS Code, by hand: type /plugins in a Claude Code chat. In the Marketplaces tab, add rajvardhan19/brigade , then install brigade from the Plugins tab. Terminal: claude plugin marketplace add rajvardhan19/brigade claude plugin install brigade@brigade As a plain skill, without the plugin system: copy plugins/brigade/skills/brigade to ~/.claude/skills/brigade . Command names. This README writes the commands as /brigade <goal and /brigade next , the plain-skill names. Installed as a plugin, they carry the plugin's prefix: /brigade:brigade <goal and /brigade:brigade next . To split a job that one session could do, add "Plan this as separate sessions" to the goal. To start a piece, use a terminal: claude --model sonnet --effort medium "Do brigade piece 02: follow .brigade/prompts/02-importers.md" Or, in VS Code or the desktop app, open a new chat, pick the model, and send the same sentence. When a wave is done, run /brigade next . Run the review prompt in a new chat on Opus. If it says DEFECTS, run its fix prompt once. See a full real run: examples/ledger https://github.com/rajvardhan19/brigade/blob/main/examples/ledger has the plan, the project map, every prompt, the progress log and the review, exactly as Brigade wrote them. - Small sample: 4 tasks and 11 runs, mostly single runs. The robustness comparison comes from one split run. - Untested on multi-hour jobs. Brigade is designed for builds so large that one session's context fills up, and none of the test jobs were that big. - You coordinate. You start each session and pick its model, and Brigade tells you exactly what to run. - Overlap with Claude Code Projects: Projects beta, claude.ai/code and the desktop app also splits work into fresh threads. Brigade adds a model per piece, the review step, and support for the terminal and VS Code. python3 bench/run.py --tasks t6 ledger --arms baseline,brigade,brigade-forced --stage mine python3 bench/report.py mine bench/ contains the test projects, the task briefs, the hidden graders and the raw results of every run. MIT