Go Agent Development Kit (github.com)

Go Agent Development Kit (GADK) is a batteries‑included Go toolkit for building production-ready AI agents that wraps language models, tool execution, retrieval-augmented memory, and multi-agent coordination behind a pragmatic API. It provides an opinionated, composable runtime that handles deterministic session orchestration, thread-safe session management, tool/sub-agent registries, and memory lifecycle so teams can focus on domain logic instead of plumbing. A CLI demo shows tool use, delegation, and persistent memory; the kit follows production patterns inspired by Google’s ADK terminology and includes a dummy model for deterministic testing. Technically, GADK exposes runtime.Config to wire model loaders, tools (agent.Tool), sub-agents (agent.SubAgent), and memory factories. It includes adapters for Gemini 2.5 Pro (requires GOOGLE/GEMINI_API_KEY), Anthropic, Ollama and a dummy model; UTCP support enables provider‑agnostic tool calling. The memory engine composes weighted retrieval (similarity, recency, source, importance), maximal marginal relevance, summarisation and pruning over pluggable vector stores (Postgres+pgvector, Qdrant, in‑memory). Key requirements: Go 1.22+, PostgreSQL 15+ with pgvector for persistent RAG, and schema-safe migrations. GADK makes it straightforward to swap models, add tools, register sub-agents, and tune retrieval via CLI flags—lowering the barrier to robust, extensible agent deployments in Go.