0-code

Agent-native coding tool — structured execution, composable permissions, and graph-first context for serious software work.

Positioning

0-code is an agent-native coding tool: the runtime treats plans, tools, and workspace state as typed, schedulable structure (not only a linear chat transcript). That enables safer automation, clearer audit trails, and native integration with complex workflows—including on-chain and multi-agent scenarios.

Key differentiators

• DAG-first execution — Task graphs with explicit dependencies instead of ad-hoc string streams.
• Graded permissions — Probabilistic and budget-aware policies, not only single-shot allow/deny prompts.
• Graph-native context — Prune and hydrate structure; avoid summarizing away the relationships that matter.
• Structured multi-agent — Shared execution graphs and typed handoffs instead of opaque XML chat relays.
• Proof-carrying safety — Attach verifiable intent and policy evidence where the toolchain supports it.
• Web3 as first-class nodes — Chain reads, simulation, and submission as native graph operations, not only bolt-on MCP scripts.

Architecture overview

Rust workspace (Cargo.toml) with focused crates:

Crate	Role
zero-core	Orchestration, session loop, integration between subsystems
zero-tools	Tool registry, dispatch, and execution adapters
zero-perms	Permission pipeline and policy composition
zero-context	Context graph, compaction, and workspace memory
zero-llm	LLM provider abstraction (configurable Messages API, OpenAI-compatible)
zero-agents	Multi-agent: SubAgent, Coordinator, Team
zero-hooks	Lifecycle events and hook engine
zero-skills	Skill loader, matcher, and frontmatter parser
zero-mcp	MCP client (stdio, SSE, WebSocket transports)
zero-protocol	0-protocol integration (oracle, dex, ads)
zero-tui	ratatui-based terminal UI
zero-cli	Binary entry point

Getting started

Build the workspace:

cargo build --release

Flock (default provider)

Flock is the default LLM provider (OpenAI-compatible):

export FLOCK_API_KEY=your-key
cargo run -p zero-cli --bin zero-code -- --interactive

One-shot mode:

cargo run -p zero-cli --bin zero-code -- "Explain this codebase"

Other providers

# OpenAI
export OPENAI_API_KEY=your-key
cargo run -p zero-cli --bin zero-code -- --provider openai --interactive

# Messages API (generic SSE)
export ZERO_CODE_API_KEY=your-key
cargo run -p zero-cli --bin zero-code -- --provider messages-api --interactive

Provider options

Provider	Env var	Default model	Protocol
flock	FLOCK_API_KEY	qwen3-30b-a3b-instruct-2507	OpenAI-compatible
openai	OPENAI_API_KEY	gpt-4o	OpenAI-compatible
messages-api	ZERO_CODE_API_KEY	(configurable)	Messages API SSE

License

This project is licensed under the Apache License 2.0 — see LICENSE.

Contributing

Contributions are coordinated through the parent 0-protocol repository: github.com/0-protocol/0-protocol.