Rig

In this catalog it is the Frameworks option when you need to compose multi-step agent loops and tool handoffs. Keep Rig on the observe/propose side of the loop: useful signals and drafts, with human or policy authority still required before anything irreversible runs.

Rig is a Rust agent/LLM library: provider abstractions, tools, vector stores, RAG, and typed extraction for safety-conscious services.

1. Configure providers and tools in Rust.
2. Build an agent or RAG pipeline.
3. Call embeddings/vector store as needed.
4. Return typed extracts or completions to the host service.

Related: llamaindex · topics/04-data · topics/12-central-nervous-system

• Use when: Rig is a Rust library for building portable LLM applications and agents with provider abstractions, tools, vector stores, RAG, and typed extraction matches the bottleneck and you specifically need to compose multi-step agent loops and tool handoffs.
• Skip when: another pack already covers the need with less ops surface, or Rig would become a second place people retype truth.
• Prefer instead: compare LlamaIndex before locking the cell.

• Ops: confirm license, hosting, and release cadence for Rig (0xPlaygrounds/rig) before relying on it in a live corridor.
• Integration: bad credentials, scopes, or schema drift produce empty retrievals or runaway tool/model spend without an obvious UI alarm.
• Scope: Frameworks components support agents; they are not the company ledger or the approval authority.