Repo brief: foundry-rs/foundry

Generated by RepoPilot · document generated 2026-09-16 · concise human review Evidence snapshot · analyzed 2026-09-16T05:50:19.748Z · commit ff92f7d3c288

Verdict

Healthy — Healthy across all four use cases

• Last commit today
• 9 active contributors
• Distributed ownership (top contributor 23% of recent commits)
• Apache-2.0 licensed
• 2 more receipts on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

What it is

Foundry is a Rust-written toolkit for Ethereum smart contract development that includes Forge (build/test/fuzz/deploy), Cast (contract interaction CLI), Anvil (local EVM node), and Chisel (Solidity REPL). It solves the problem of slow, fragmented Solidity development workflows by providing a unified, high-performance suite optimized for testing, fuzzing, and local node simulation. Monorepo with 30+ Rust crates organized under crates/: anvil/ (local node with core/rpc/server subcrates), cast/ (CLI tool), forge/ (main testing framework), evm/ (core execution with subfolder structure for fuzz/coverage/traces/symbolic), cheatcodes/, fmt/, and supporting tools. Workspace-level Cargo.toml…

Start here

Read these in order:

• crates/cheatcodes/src/utils.rs — Foundation: doesn't import anything internally and is imported by 2 other files. Read first to learn the vocabulary.
• crates/evm/core/src/opts.rs — Foundation: imported by 2, no internal dependencies of its own.
• crates/cli/src/opts/mod.rs — Built on the foundation; imported by 1 downstream file.
• crates/cast/src/cmd/safe/mod.rs — Built on the foundation; imported by 1 downstream file.
• crates/cast/src/cmd/mod.rs — Layer 2 — application-level code that wires the lower layers together.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

git clone https://github.com/foundry-rs/foundry.git
cd foundry
cargo build --release

Verify Rust 1.89+ is installed (workspace.rust-version = "1.89"). Binaries will be in target/release/.

Daily commands:

Use cargo directly or Makefile targets (Makefile present at root). For development: cargo build, for tests: cargo test, for specific binaries: cargo run --bin forge --, cargo run --bin anvil --, `cargo run --b…

…shortened for this brief.

Key cautions & unknowns

• Scorecard: default branch unprotected (0/10)
• Workspace uses resolver = "2", requiring Rust 1.89+; older toolchains will fail. The evm/symbolic crate likely requires z3 or similar SMT solver installed locally (not explicit in snippet). Anvil's IPC mode…
• Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

• Repository source
• Open issues
• Recent pull requests

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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