Is capnp-rpc safe to use?

capnp-rpc has no known vulnerabilities on the latest version (0.25.0). DepScope rates its health at 69/100 (moderate risk).

What is the latest version of capnp-rpc?

The latest version of capnp-rpc is 0.25.0, released 2026-01-09.

No known vulnerabilities on the latest version of capnp-rpc.

No, capnp-rpc is actively maintained. Latest release: 0.25.0 (2026-01-09).

Popular alternatives to capnp-rpc in Cargo include: hashbrown, getrandom, windows-sys, syn.

capnp-rpc is licensed under MIT.

cargov0.25.0

implementation of the Cap'n Proto remote procedure call protocol

License MITpermissive93 versions0 deps174,419 weekly dl

/ 100

Health

safe to use

[email protected] is safe to use (health: 69/100)

Health breakdown0 – 100

15/25

maintenance

14/20

popularity

25/25

security

15/15

maturity

0/15

community

Vulnerabilities

none known

API access

Get this data programmatically — free, no authentication.

curl https://depscope.dev/api/check/cargo/capnp-rpc