Functions by runtime

Functions are likely to evolve into a multi-runtime capability in OpenFoundry.

Current runtime signals

The repo already suggests several function execution modes:

• Rust-native control-plane logic
• Node-oriented package simulation and validation via node_runtime_command
• Python-enabled semantics through pyo3 in ontology-service
• SDK-backed external consumption paths

Why this matters

Separating function capability by runtime helps document:

• authoring ergonomics
• execution limits
• packaging requirements
• security and permission models

Section map

• Function package lifecycle
• Language and runtime comparison
• Validation and simulation flow