Multi-language SDKs (TypeScript, Rust, Go, Java)

[danielbentes]

Context

The current SDK is Python-only. Agent development spans multiple ecosystems — TypeScript for web-based agents and MCP, Rust for performance-critical runtimes, Go for infrastructure agents, and Java/Kotlin for enterprise deployments. (Roadmap Section 4.2)

Objective

Extend SDK support beyond Python to cover the primary agent development ecosystems, with each SDK providing full capability registry, checkpoint/evidence management, workflow DSL interpreter, and hook integration.

Tasks

• TypeScript SDK (High priority — dominant in web agents, MCP ecosystem)
• Rust SDK (Medium priority — performance-critical runtimes, safety guarantees)
• Go SDK (Medium priority — infrastructure agents, Kubernetes operators)
• Java/Kotlin SDK (Lower priority — enterprise agent deployments)
• Each SDK must provide:
  • Full capability registry with ontology loading
  • Checkpoint/evidence management
  • Workflow DSL interpreter
  • Hook integration for the target platform's agent framework

Acceptance Criteria

• At least 2 SDKs (TypeScript + one other) are published with full feature parity to the Python SDK
• Each SDK loads and queries the capability ontology
• Each SDK manages checkpoints and evidence stores
• Each SDK interprets the workflow DSL
• Integration tests validate cross-SDK compatibility

Related

• Python SDK: grounded_agency/ package
• SDK integration tests: tests/test_sdk_integration.py
• SDK documentation: docs/integrations/claude_agent_sdk.md