v0.4.0-alpha

You already did the work. Prove it.

Workbench turns a coding session you already ran into a SkillBundle — a signed, replayable record of what happened, scored against six proof gates. Drop a Claude Code transcript and you have one in about a second.

Record a session → No account. No API key. Nothing leaves your browser.

1 · Record

Drop ~/.claude/projects/<project>/<session>.jsonl. Workbench streams it, splits it at each turn you took, and turns every tool call and result into a trace edge.

Start here →

2 · Verify

Six gates run over the sealed bundle — content hash, trace completeness, hidden capability, authority, redaction, replay fidelity. Each verdict is computed by an Invariant Arithmetic consume call and says which law produced it.

3 · Replay

Re-execute the skill against the same body and see where reality drifted. Surprises are typed and carry the same law projection as the gate they violate.

Browse the library →

What makes a bundle worth having

It cannot quietly understate what it did.
Every capability the trace exercised must be declared. Withhold one and gate.no_hidden_capability and gate.authority both fail and name it. A tool Workbench doesn't recognize is recorded as &host.unknown_* — never as ambient, because "we don't know what this needs" and "this needs nothing" are different claims.
It tells you what it left out.
Thinking blocks, subagent turns, unparsable lines — all counted and shown. A zero and a blank look identical in a table and mean opposite things.
It can be handed to someone else.
Three redaction profiles, applied before a bundle is saved. transcript_pii walks observations and tool arguments — a key in a shell command is the likeliest secret in a real session, not one in a payload.

Teaching from scratch

If you want to drive a fresh interaction rather than record one you already ran, the Teach flow does that — it's the one surface that calls a model, so it's the one that asks for an OpenRouter key. Everything downstream is identical: same trace format, same six gates, same library.

Workbench v0.4.0-alpha · PRISM leaderboard · Import a bundle