Volcano SDK, a TypeScript SDK for Multi-Provider AI Agents (github.com)

Volcano SDK is a new TypeScript SDK for building multi-provider AI agents that chain LLM reasoning with MCP (Model Context Protocol) tools. It lets you mix OpenAI, Anthropic, Mistral, Llama, Bedrock, Vertex, and Azure models within a single workflow, switching providers per step or globally. Key capabilities include conditional branching, loops, parallel execution, sub-agent composition, native MCP support (tool discovery, connection pooling, authentication), streaming via async generators for real-time UIs, typed errors and full TypeScript inference/IntelliSense. Out-of-the-box production features cover three retry strategies (immediate, delayed, exponential backoff), per-step timeouts, OAuth 2.1/Bearer token handling with auto-refresh, JSON schema validation, and intelligent caching and TTL for tool discovery. For engineering teams this is significant because it reduces the friction of orchestrating multi-LLM pipelines and integrating external tools: the SDK auto-selects MCP tools based on prompts, removes manual routing, and exposes robust observability (OpenTelemetry traces/metrics with exporters for Jaeger, Prometheus, DataDog, NewRelic). The API is modular and testable, aimed at production use, and installable via npm (volcano-sdk) with Apache 2.0 licensing—making it straightforward to prototype multi-LLM workflows, build real-time interfaces, and operate them reliably at scale.