Zig CLI · Provider-native agents · Verified runs

Coding agents that stay inside the product.

AgentX is a fast, provider-aware agent runtime for executing real engineering work through one Zig-powered CLI. Specs define the contract, tools execute the work, and ProjectX keeps the task state grounded.

Open simulator Review workflow

agentx exec "Read spec 042 first"
specx update 42 implementing
zig build test:all
agentx exec-output latest

Provider native

One CLI surface

Route work through Codex, Claude, Gemini, OpenAI-compatible APIs, and local tools without making official provider CLIs the product UX.

Spec driven

Durable contracts

Start with SpecX, keep requirements reviewable, and validate against completion gates instead of relying on transient prompt memory.

Operational

Real checks

Run Zig tests, DST coverage, VOPR simulations, and production-style checks from the same workflow that performs the implementation.

Agent loop preview

Watch the ReAct loop.

127.0.0.1:8080

Ready

AgentX makes the ReAct loop visible: the model reasons, calls a tool, observes the result, and repeats. Open the full simulator to interact with that loop across /plan and /goal scenarios.

ready reason -> tool -> observe -> verify

Open simulator

Delivery loop

From spec to verified product behavior.

01

Accept the spec

Capture requirements, constraints, APIs, and completion gates in SpecX.
02

Implement through AgentX

Use the CLI product surface to keep provider behavior and tools honest.
03

Verify the real path

Run the same checks users depend on and keep the final output auditable.