Forge

Forge is the reference implementation of ANVIL — the open contract for accountable, portable AI agents.

Build agents that hold a cryptographic identity from birth, run a tool loop under capability-scoped authority, stream tokens natively from any provider, and compile to WASM so the same binary runs on your laptop, in a Hives flight, or pinned to a Sigil chain.

use forge::prelude::*;

let agent = StreamingToolLoopAgent::new(
    AgentConfig::new("research", "anthropic:claude-sonnet-4-5-20250929")
        .with_system_prompt("You are a research analyst.")
        .with_tool_registry(&tools),
    StreamingLoopConfig::default(),
    model,
    tools,
    AutoApprove::shared(),
);

let output = agent.run("Summarise the last 7 days of forge-rs commits.").await?;
for record in output.tool_invocations() {
    println!("{:?} {} ({}ms)", record.status, record.tool_name, record.duration_ms);
}
println!("{}", output.text());

Six SDKs, one contract

All non-Rust SDKs share a Rust-WASM crypto module so signature, hash, and lineage operations are bit-identical across languages.

What ANVIL guarantees

Every Forge agent satisfies eight contracts:

1. Identity — bound to an OAS DID with verifiable lineage to a human root.
2. Capability — every tool call is gated by an Arsenal Agent Capability Token.
3. Tool — three-tier classification (read / write / execute) with explicit approval.
4. Health — six-state lifecycle (booting → ready → busy → degraded → draining → stopped).
5. Communication — structured request/response with content-addressed payloads.
6. Collaboration — multi-agent coordination primitives.
7. Telemetry — W3C Trace Context, Prometheus, OpenTelemetry by default.
8. Generation — provider-agnostic LLM access with native per-token streaming.

Read the full ANVIL specification.

Where to go next