Fetch one engine reference catalog.
Catalogs (cheap, cacheable per session):
- 'operators' — comparison operators for condition expressions
- 'execution-modes' — entry/exit anchors and fill algorithms, with the
validity matrix by market type
- 'stop-types' — stop-loss types, re-entry modes, and their parameters
- 'sizing-methods' — position-sizing methods and their parameters
- 'bar-frequencies' — supported bar frequencies and the signal x
execution validity matrix (which combinations are allowed)
- 'sections' — the full metric catalog: every statistic's stable id,
display label, section, and description
- 'sampling-modes' — Monte-Carlo resampling modes, each with its
status and parameters
Fetch the relevant catalog BEFORE building a strategy or config; build
only from values it lists — never guess parameter names or frequencies.
Connector