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API Reference

The Control Center backend is a FastAPI application exposing *203 /api/

endpoints across 22 groups** (verified by scanning the route modules in

src/nexus_scalp/web/), plus Server-Sent Events for ticks and WebSocket for

the dashboard. Everything the UI does, the API does — the UI is a consumer of

the same surface.

NOTA

Endpoint counts are generated from the repository's actual route decorators —

they drift with the code, and the docs doctor flags stale counts.

Discovery

Health / readiness: GET /health → 200 with READY/DEGRADED, 503 when NOT READY.
Engine state: GET /api/status and GET /api/live/state (the dashboard heart, includes the effective serving contract).
OpenAPI: the FastAPI app serves its schema at /openapi.json and Swagger UI at /docs on the same port as the UI (http://127.0.0.1:8080 by default; Docker :9090).

Endpoint groups (verified)

Group	Count	What it covers
`/api/models/*`	45	governance, promotion/rollback previews, load gate, model inventory
`/api/research/*`	23	datasets, discovery, runs, evidence, observability, retry/cancel
`/api/news/*`	18	ingestion, analysis, consensus, keywords, bounded gate state
`/api/db/*`	12	migrations, hygiene runtime + quarantine, console, portability
`/api/account/*`	11	equity curve, drawdown, growth, performance intelligence
`/api/debug/*`	10	canonical 18-section debug snapshot, traces
`/api/diagnostics/*`	10	read-only incident diagnostics, export
`/api/intelligence/*`	10	behavior detections, anomalies, lifecycle
`/api/command-center/*`	8	operator command surfaces
`/api/operator/*`	6	operator actions (gated)
`/api/replay/*`	6	historical session replay over the shared engine
`/api/experience/*`	5	autopsy, outcome recovery
`/api/runtime-config/*`	4	authoritative runtime snapshots (hot reload)
`/api/settings/*`	4	settings DB (secrets never returned)
`/api/liquidity/*`	3	liquidity state/features/toggle (research governor)
`/api/forensics/*`	2	health engine, deploy gate
others (`rules`, `live`, `engine`, `config`, `mslie`, `algo`, …)	rest	rules matrix, SSE streams, algo tuner

Conventions

JSON everywhere. Enums serialize via a single serialize_enums() helper; error payloads use a shared safe-error shape (no stack traces, no internals).
Timestamps are broker-local-offset-aware ISO-8601 (the broker epoch quirk is a documented contract, not an accident).
No authentication on loopback (the API binds 127.0.0.1 by default); secrets never appear in responses — provider URLs are [REDACTED_SECRET].
Write paths are gated: LIVE-affecting actions require explicit operator confirmation; /api/factory/provider-test performs exactly one bounded probe through the provider gate.

Examples

# engine health
curl http://127.0.0.1:8080/health

# account performance intelligence (compact intelligence block included)
curl http://127.0.0.1:8080/api/account/performance/intelligence

# forensic health verdicts
curl http://127.0.0.1:8080/api/forensics/health

# debug snapshot: 18 canonical sections, contract validation included
curl http://127.0.0.1:8080/api/debug/state

# live tick stream (SSE)
curl -N http://127.0.0.1:8080/api/ticks/stream

Automation notes

All list endpoints are stable-shape JSON; the Control Center's api_client.js is the reference client.
SSE clients should reconnect on drop; stream state is idempotent.
Runtime configuration reads must go through GET /api/runtime-config/* snapshots — cached constructor values lie.

Where the code lives

Route modules: src/nexus_scalp/web/ (server.py + domain modules:

debug_research_routes.py, diagnostics_state_routes.py,

news_liquidity_mslie_routes.py, factory_routes.py, db_console.py, …).

Contracts are indexed in

">https://github.com/Opselon/NexusTradingForexBot/blob/main/agents/contracts.md">agents/contracts.md.