What problem does it solve? Fianu indexes are CEL-defined asset scopes that policies and gates reference, but their API surface has non-obvious behaviors: draft previews take pagination in the request body rather than the query string, create/update responses are wrapped in an index envelope, and materialization is asynchronous with its own recompute states. This Skill documents the exact endpoints, filters, lifecycle states, and typed F_72xxx errors so agents call the API correctly the first time. ## Core Features & Use Cases - Read and write operations: List, get, create, patch, and soft-delete indexes via /entities/indexes, with filters for entity status, recompute status, asset type, and index type. - Dual preview paths: Compile-only preview for unsaved drafts (body-based pagination) versus worker-materialized member preview for saved indexes. - Compute lifecycle and error handling: Interpret current/stale/computing/error recompute states and typed errors like F_72006 (not found), F_72007 (archived), and F_72008 (recompute failure). - Use Case: When a gate references an index and returns F_72008, use this Skill to diagnose the recompute failure via the examine endpoint and determine whether the index is archived, stale, or misconfigured. ## Quick Start Use the working-with-indexes skill to list all stale Fianu indexes and preview the members of the production-repositories index.