Fuzzy block. Assign exactly one label from a closed set to a text, with a bounded confidence and a one-sentence grounded reason.
Deterministic block. Emit the commit log for a revision range as one line per commit (hash, date, subject), oldest first.
Deterministic block. Read a workspace-relative text file; refuses absolute paths and anything that escapes the workspace.
Deterministic block. Write content to a workspace-relative path, creating parent directories. The workflow's write grants decide where it may land.
Compose a new Blocks workflow (*.workflow.json) from the block library for a stated problem. Use when asked to automate a repeatable task with blocks — inventory, wire, gate, validate, render, iterate until clean.
Execute a saved Blocks workflow deterministically. Use when asked to run a *.workflow.json — the CLI runs deterministic nodes; you act only as the oracle for fuzzy nodes and never improvise the DAG.
Fuzzy block. Approve or hold a release artifact. Answers must be signed by a key carrying the release-approver claim — the approval is recorded, attributable, and re-verifiable.
Fuzzy block. Approve or reject a candidate; requires a signing key with the fixture-approver claim.