baml
Library Featured
The programming language for agents
- Downloads
- 2,113
- Dependents
- 7
- Stars
- 9,494
- Forks
- 515
- Contributors
- 110
- Commits
- 4,269
- Latest release
- 0.226.3 ·
About
BAML: Basically A Made-up Language
BAML is the programming language for agents.
Homepage | Explore BAML | Discord
BAML looks like TypeScript, but every feature is built so agents make fewer mistakes:
- It has a type system like Rust, but compiles even faster than Go.
- Types persist at runtime. There is no
anynor casting dangerously to any type. - Errors are typed and statically analyzed.
- The filesystem describes the modules/namespaces.
- Has green threads, and colorless concurrency like Go
- Built-in tests / eval framework
- Built-in stdlib for agents
- Every baml tool is natively designed for agents, with no garbage outputs, etc.
- Can be run standalone or adopt incrementally (you can call a BAML function from TS, Py, Go, C#, Java, etc).
Explore the website and examples.
Try it out
brew install baml
baml agent install
baml init
baml ide install --code
Or read the quickstart.
Contributing
See our guide on getting started.
Made with ❤️ by Boundary. HQ in Seattle, WA.
We're hiring software engineers who love Rust. Email us or reach out on Discord.
Compatibility
- Runs on
- GPU support unknown
What shows it
- no dependency or feature matches a backend row
- Native code
- Required
- Binds native code: baml-sys, baml_cffi
- Python bindings
- No Python binding crate found
- License
- Apache-2.0
Compare with similar projects
Order: strongest tier first, then most downloads, then name, with unmeasured values last. A library counts downloads over 30 days. An app counts binary downloads per release. An app with none counts its crate downloads over 30 days. ML Rust runs this catalogue, so its closest project always gets a row.
| Project | Downloads | Dependents | Stars | Latest release | Runs on (GPU) | Native code | License |
|---|---|---|---|---|---|---|---|
|
The programming language for agents |
2,113 downloads over 30 days | 7 | 9,494 | 0.226.3 | GPU support unknown | Binds native code: baml-sys, baml_cffi | Apache-2.0 |
|
agent-client-protocol Featured
Core protocol types and traits for the Agent Client Protocol |
941,949 downloads over 30 days | 145 | 245 | 5.0.0 | GPU support unknown | No native code found | Apache-2.0 |
|
the runtime your coding agents live on |
150,430 binary downloads per release | Not applicable | 49,455 | Not measured | Not measured | Apache-2.0 | |
|
rust-mcp-sdk Featured
An asynchronous SDK and framework for building MCP-Servers and MCP-Clients, leveraging the rust-mcp-schema for type safe MCP Schema Objects. |
29,764 downloads over 30 days | 51 | 199 | 2.0.0 | GPU support unknown | No native code found | MIT |
|
Browser automation CLI for AI agents |
9,253 binary downloads per release | Not applicable | 47,653 | 0.19.0 | GPU support unknown | No native code found | Apache-2.0 |
|
Think before doing, prove before saving. Vestige is the local-first cognitive operating system and deterministic safety kernel for autonomous AI agents. |
41 binary downloads per release | Not applicable | 660 | Not measured | Not measured | AGPL-3.0 | |
|
An open protocol that gives AI agents a secure, sandboxed place to run code and use tools — with lean context usage. AXP works alongside MCP |
Not measured | Not applicable | 3 | Not measured | Not measured | Not measured | Apache-2.0 |
Why FeaturedIt passes every Featured gate.
What it meets
- It passes the repository route: 9,494 stars, 515 forks and 110 contributors. It needs 4,539 stars, 434 forks and 79 contributors together. Stars alone never qualify a project.
- It has 1 active dependents and 1 new dependents in 365 days.
- Active dependents are at 100% of their peak. Featured needs at least 50%.
- Docs are present. The release commit or a manifest ties the crate to the repository.
- No vulnerability advisory stays unpatched past the grace window. At least one version is neither a prerelease nor 0.0.x.
- The last activity is on 8 Nov 2026, 1 day ago. The rules expect an update within 365 days. Dormancy rule
Exact rules: Featured library. The check on applied thresholds version 9.
Every rule outcome, as the check records it
expected-interval: version 0.226.3 base 300, raised to the 365-day floor: E = 365 daysdormancy: last activity 2026-11-08, 1 days ago, E = 365: activefeatured: featured: repository route stars 9494 (needs 4539), forks 515 (needs 434), contributors 110 (needs 79), active_users 1, new_adopters 1, former_glory 1
Crates5 crates
- baml Primary
- baml-cli
- baml-macros
- baml-sys
- baml_bridge
Measurements and sources
Each signal row shows the raw value, its source and the fetch date. The Sources list gathers every distinct source on this page. Movement needs more history.
Sources6 sources
- Description: the GitHub repository description
- crates.io database dump, fetched
- RustSec advisory database, fetched
- GitHub repository, fetched
- crates.io package, fetched
- GitHub contributors, fetched
Adoption1 active dependents, 1 new dependents in 365 days1 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Active dependents | 1 | crates.io database dump | Yes | |
| New dependents (365 days) | 1 | crates.io database dump | Yes | |
| Peak active dependents | 2 | crates.io database dump | Yes | |
| Active dependents as a share of the peak | 1 | crates.io database dump | Yes | |
| Binary downloads per release | Not measured | Yes |
MaintenanceLatest human commit: 1 day ago3 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Latest human commit | 2026-11-08 | GitHub repository | Yes | |
| Latest release | 2026-11-07 | crates.io database dump | Yes | |
| First release | 2025-04-14 | crates.io database dump | Yes | |
| Latest version | 0.226.3 | crates.io database dump | Yes | |
| Days the oldest outside issue waits for a reply | 61 | GitHub repository | Yes | |
| Maintainer replies over 365 days | 0 | GitHub repository | Yes | |
| Repository archived | false | GitHub repository | Yes | |
| Repository gone | false | GitHub repository | Yes | |
| Release commit or manifest in the repo | true | crates.io package | Yes | |
| Published docs | true | crates.io database dump | Yes | |
| Latest release fails cargo check | Not measured | Yes | ||
| Build check date | Not measured | Yes | ||
| Build check toolchain | Not measured | Yes |
SecurityUnpatched vulnerabilities: none
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Unpatched vulnerabilities past the grace window | none | RustSec advisory database | Yes | |
| RustSec unmaintained advisory | none | RustSec advisory database | Yes | |
| Deprecation notice | none | crates.io database dump | Yes | |
| Deprecated requirement | none | crates.io database dump | Yes |
Distribution9 releases, 2,113 downloads over 30 days5 not measured
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| Releases | 9 | crates.io database dump | Yes | |
| Downloads over 30 days | 2113 | crates.io database dump | Yes | |
| Binary downloads over the last 3 releases | Not measured | Yes | ||
| Homebrew installs on request over 365 days | Not measured | Yes | ||
| Repology repository families | Not measured | Yes | ||
| Docker pull growth over 90 days | Not measured | Yes | ||
| Docker pulls at the growth baseline | Not measured | Yes | ||
| Every version a prerelease | false | crates.io database dump | Yes | |
| Every version 0.0.x | false | crates.io database dump | Yes | |
| Every version yanked | false | crates.io database dump | Yes | |
| Crate deleted from crates.io | false | crates.io database dump | Yes |
Repository9,494 stars, 515 forks, 110 contributors, 4,269 commits. Stars alone never qualify a project.
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| GitHub stars | 9494 | GitHub repository | Yes — one part of the repository route | |
| GitHub forks | 515 | GitHub repository | Yes — one part of the repository route | |
| Contributors with a GitHub account | 110 | GitHub contributors | Yes — one part of the repository route | |
| Commits on the default branch | 4269 | GitHub repository | No | |
| Repository's main crate left out of the entry | none | crates.io database dump | Yes |
Facts that never count
| Signal | Value | Source | Fetched | Counts |
|---|---|---|---|---|
| License | Apache-2.0 | crates.io database dump | No | |
| Runs on, from listed crates and their direct dependencies | GPU support unknown | crates.io database dump | No | |
| What shows each backend | no dependency or feature matches a backend row | crates.io database dump | No | |
| Native code, from listed crates and their dependencies | Binds native code: baml-sys, baml_cffi | crates.io database dump | No | |
| Python bindings, from direct dependencies of listed crates | No Python binding crate found | crates.io database dump | No | |
| Crates that depend on a listed crate directly | 7 | crates.io database dump | No |
Corrections and review history
No correction applies to this entry.
Judgments
A judgment enters only through an approved issue and a merged pull request.
No judgment applies to this entry.