facet

v0.44.3 Experimental

Reflection for Rust: introspect types at compile time with metadata for serialization, pretty-printing, CLIs, and more

MIT OR Apache-2.0 Edition 2024 MSRV 1.90

Development tools Encoding Rust patterns #serialization#reflection#metadata#derive#introspection

GitHub ↗ crates.io ↗ Compare with…

Quick Verdict

✓Actively maintained (updated 11d ago)
!Pre-1.0: API may have breaking changes
✓Massive adoption (1.0K crates depend on it)
✓Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...

Downloads

212.5K

Dependents

1.0K

Releases

101

Size

157KB

Deep Insights

📈

Strong growth momentum

44.7K downloads in the last 30 days (1.5K/day), up 37% from the previous period.

🔗

Widely adopted

1.0K crates depend on facet. Strong ecosystem adoption means battle-tested code and long-term stability.

👤

Prolific maintainer

The primary maintainer publishes 425 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

🌟

Used by top crates

Notable dependents include crux_core, crux_macros, crux_http, graphannis, http-types-red-badger-temporary-fork. When high-quality crates choose facet, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 14/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 6/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days

1K/day avg+70%

Top Dependents

Most downloaded crates that depend on facet

http-types-red-badger-temporary-fork

Version Adoption

v0.31.8

48%

v0.28.3

20%

v0.28.0

13%

v0.27.16

13%

v0.30.0

Release Timeline

101 releases2 yankedsince 2025

2025

2026

Less

More|

Yanked

Feature Flags

default =["std", "helpful-derive", "doc"]

doc*netstd*urlsimdtimeuliduuidyokeallocbytesiddqdruintcaminochronofn-ptrjiff02semvernonzeroreflecttendrilfunctionindexmaplock_apismallvecsmol_strtestfeatall-implstuples-12bytestringslow-testsauto-traitscompact_strnum-complexsmartstringrust_decimalordered-floathelpful-derive*

README

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Maintainers

Amos Wenger

425 crates

Dependencies

direct dependencies