Claude Code, Codex, whichever subscription you already pay for. Crowbar runs them side by side on real branches, lets you switch mid-conversation without losing a word, and never asks you to create an account.
A provider is a small file: how to launch the agent, which modes it has, how it reports back. Claude Code and Codex are supported today; adding another CLI means writing a manifest, not forking the app. Switch between them mid-conversation; cancel one, start another, the context stays yours. Manifests travel through Quiver, the same channel that will deliver Crowbar itself.
One model drafts, another reviews, a third is cheaper for the boring part. In Crowbar that is a chip in the composer, not a new window. Pick a different provider between turns and the conversation carries on, same branch, same diff in view.
A chat can start another chat. The child inherits the context it needs, works its own question, and reports back — neither drifts. Spin one off to chase a flaky test while the parent keeps shipping. Spin three off. Spin one off the child. All of it in the sidebar, under the branch it belongs to, resumable tomorrow.
Open any branch as a review: the whole diff against its base, a comment on any line, threads you reply to and resolve. Agents read the same threads and answer in them — ask for a change on line 20, get the fix and a reply. None of it leaves your disk: no GitHub account, no pushed branch, no PR to open first.
export function bulkDiscount(cents: number, qty: number) { return cents * qty * 0.9 const total = cents * qty return Math.round(total * 0.9)Round once, at the boundary — not in here.
Moved the rounding into ledger.ts; this returns the exact value now. Resolving.
}Agents reply in rich Markdown; most tools hand you a plain text box in return. Crowbar treats both sides the same: your prompt is a document — headings, lists, code, tables, attachments — and when a data flow is easier drawn than typed, you draw it. Excalidraw boards live inside the conversation, and the agent reads them and draws back.
pricing.ts — bulk-discount multipliertax.ts — the rounding helperThere is no authentication server to sign in to and no premium tier to unlock. Everything is available the moment the install finishes. Your chats, branches and reviews stay on your machine, in a local daemon and a local database you can inspect. Your agents talk to their own providers; the only thing that comes from us is Crowbar itself, through Quiver.
Script a plan, a build, a review and a verify step once; run it across agents the same way every time.
Panes and commands distributed through Quiver, the same channel that will carry Crowbar and its provider manifests.
The changelog is public and the issues are open. Tell us what your bench is missing.
Crowbar will ship through Quiver, a distribution system that will also carry its provider manifests and, eventually, its extensions. No installer page, no app store, no account — one command, once it's ready.