Function Catalog

This page summarizes the Jarvis-Operas functions and command-line lookup tools.

Registry Interface

The core registry interface supports:

Registered functions use this name format:

<namespace>:<name>

Current built-ins include:

Function	Purpose
`math:add(a, b)`	Add two values.
`math:identity(x)`	Return the input value unchanged.
`stat:chi2_cov(residual, cov)`	Evaluate a covariance-matrix chi-square term.
`helper:eggbox(inputs)`	Evaluate the EggBox helper function.

Use jopera list and jopera info to inspect available functions:

jopera list
jopera list --namespace math
jopera info stat:chi2_cov --json

Use jopera call or jopera acall to execute functions:

jopera call helper:eggbox --kwargs '{"inputs":{"x":0.5,"y":0.0}}'

User-defined operators can be loaded from local Python files and called by namespace:

jopera call my_ops:my_score \
  --user-ops /absolute/path/to/my_ops.py \
  --arg x=2

See Operas Overview for registration patterns and integration notes.