Create New Indicator

Create New Indicator (Python)

Use when adding a new indicator under the Strategy Lab indicators/ workspace.

Constraints (platform rules)

• Do NOT hardcode indicator id/name/kind in the frontend renderer.
• Keep the output generic via Plot API (v1 today).

Steps

1. Create the script file

• Path: server/indicators/<name>.py (or subfolders under server/indicators/).
• Must export calculate(inputs, settings=None).
• Optional: initialize(ctx) to declare Inputs UI (Manifest).

2. Produce Plot API v1 output (recommended)

• Return {"plots": [...]}.
• Prefer index-based coordinates (index, from/to) so the backend can align to candle time.
• Reference: docs/public/plot-api-v1.md.

3. No manual registration

• The backend scans server/indicators/ automatically:
  • server/src/services/indicatorFileService.js
  • server/src/indicatorRegistry/registry.js
• The indicator id is the relative path including .py (example: my_indicator.py or market_structure/pivots.py).

4. Verify

• In the app: Strategy Lab -> save the file; Chart -> activate and run.
• Optional quick check: Debug -> terminal command run indicator <id> --asset=CL1! --tf=M15 --len=1000.
• Run standard validations: see skills/verify_changes/SKILL.md.

Template

Start from skills/create_new_indicator/template_indicator.py.