What problem does it solve? Coding agents declare work done without proof. ISA pins what finished means before any code exists: a single Markdown document carrying a verifiable goal, atomic binary-probe claims (ISCs), a per-claim Test Strategy, and a decision/learning/verification trail, so every claim stays open until a probe actually passes. ## Core Features & Use Cases - Scaffold and Seed: Draft a new ISA from a prompt, or bootstrap a project ISA from an existing repo's README, configs, commits, and test files without inventing fiction. - Grill and Interview: Interrogate half-formed ideas into shape via checkpointed Q&A, or deepen thin sections of an existing ISA with targeted spec-interview questions. - CheckCompleteness gate: Score an ISA against a substance-scaled completeness rubric (trivial/substantial/deepest) covering anti-claims, test-strategy coverage, ID stability, and fog graduation. - Reconcile: Deterministically merge parallel feature-slice files back into the master ISA keyed on stable claim IDs. - Use Case: Before building a CLI feature, scaffold an ISA whose claims each name one runnable probe (bash, bun-test, curl); the close gate blocks completion until every probe passes and fog sections are empty. ## Quick Start Ask the agent to scaffold an ISA from your feature request, for example: scaffold an ISA for adding a --json output flag to my CLI with verifiable claims and a test strategy.