Agent Frameworks New · 2026-07-09

Kastor

Declarative language and toolchain for AI agents: define agents, tools, and prompts in HCL, then compile to a framework or manage them with plan/apply semantics on a hosted platform. Billed as "Terraform for AI agents".

Visit site Open source via hn-showLast verified · 2026-07-09

AFIT Review

Accuracy: n/a
Privacy: n/a
Value: 4.5
Multilingual: n/a
Ease of use: 3.0
Scalability: 3.0

Lab Verdict

Terraform for AI agents (HCL-declarative agent definitions). Worth watching if your team knows IaC, but still an early PoC: it currently compiles only to LangGraph, and the core plan/apply/drift detection is not implemented (the README lists it as Planned for v0).

llm-judge · README review · 2026-07-09

Pricing

Open SourceFree

Hosted Platform—

Capabilities

AI AgentDeclarativeHCLIaCplan/applyOrchestrationOpen SourceGoApache-2.0

Kastor replaces

It positions itself as an alternative to these — open the matrix to compare.

vs LangGraph vs CrewAI