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Library
riz

riz

Self-hosted Lambda runtime in one Rust binary that runs unmodified AWS Lambda handlers as agent-callable tools.

Founded
2026
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Library

riz - Library

riz.dev·Crawled Oct 10, 2026·

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6 pages
  1. Examples: agent tools, Agent SDK loops, WASM compute, WebSockets, auth/examples.html

    Every example ships in the repo and runs against the suite: agent tools over MCP, Claude Agent SDK demos, a multi-step agent loop with token attribution, real WASM compute, WebSocket chat, WorkOS/Clerk auth.

  2. Getting started: function to agent-callable tool in 3 minutes/start.html

    Install riz, scaffold a working handler, boot it, curl it, and point an agent at it — the full path in five steps. Then verify with riz doctor and riz mcp inspect.

  3. LLM gateway. Every model, one base_url./gateway.html

    OpenAI-compatible LLM gateway built into the riz binary. Route OpenAI, Anthropic, and local Ollama by model prefix with fallback, budget caps that fail closed, per-provider cost telemetry, and bearer auth.

  4. Sandbox, capability broker, and WASM guards/sandbox.html

    Run untrusted and LLM-generated code under a WASI sandbox with deny-by-default filesystem and network — and still reach Postgres, DynamoDB, S3, and pinned HTTP origins through host-enforced capability grants. WASM guards screen every request and response, fail-closed.

Comparison

1 page
  1. vs AWS Lambda, vs web frameworks. Same handler, different deal./compare.html

    Where riz sits against AWS Lambda and against Express/FastAPI/Axum — what's actually different, and the verdict. The Lambda programming model self-hosted, run always-on as a container on Cloud Run / ECS Express / Azure Container Apps (no cold start), with the agent layer built in.

Homepage

1 page
  1. Homepage/

    Self-hosted AWS Lambda runtime in one Rust binary. Every function becomes a typed MCP tool the moment it boots — and the binary itself is a delegable A2A agent that meshes with other riz instances. Six runtimes, no cold starts, WASM sandbox, LLM gateway. 1,300+ tests. Apache-2.0.