Anvil SDK

Anvil JS is a Node.js backend framework designed for the modern landscape of API interactions, handling requests from both browsers and advanced tools. Key features include: • Unified route file for REST endpoints, MCP tools, and A2A skills • Shared schema with build-time validation • File-based routing for streamlined development • Native integration for agentic layers, tools, and tracing • Built-in safety features like guardrails and durable execution This framework eliminates the complexity of duplicating validation logic across multiple layers and hand-wiring various SDKs. By defining a single route, developers instantly gain a REST endpoint for traditional browser interactions, an MCP tool for procedural communications, and an A2A skill for agent-to-agent protocols, all while ensuring consistent schema validation at build time. Anvil JS simplifies backend development with robust features for observability, including tracing, a dashboard, and cost governance. It enhances reliability with durable execution and human-in-the-loop capabilities, while offering advanced memory management through session memory, RAG, and semantic caching. Background tasks further extend its utility with scheduled and triggered agents. Ideal for backend developers and engineering teams building sophisticated web services and integrated systems that require consistent data handling, reliable execution, and seamless interoperability between traditional applications and advanced agents. It helps in developing high-performance, maintainable web services with less boilerplate.