Door: agent builders¶

Start here¶

• TorchLens for AI coding agents: the compact map of current spellings.
• The two running examples and the three core task pages: see and inspect, extract features, intervene.

Going further¶

• Harness bundles: several model calls where a later prompt contains an earlier output, recorded as one bundle.
• Episode capture for multi-step generation.
• Error and refusal contract: every refusal has a stable code an agent can branch on.

Coming from another tool¶

Plain forward hooks, nnsight. Where another tool is the better choice: where to go instead.