> ## Documentation Index > Fetch the complete documentation index at: https://docs.sequency.sh/llms.txt > Use this file to discover all available pages before exploring further. # Check risk gates for an order without placing it > Runs the same daily-loss latch, kill switch, and chart paper rule as start-from-card, but places nothing. Returns whether the order would pass and, if not, the verbatim block reasons. ## OpenAPI ````yaml /api/openapi.json post /api/graph/v1/execution/preflight openapi: 3.1.0 info: title: Sequency Graph API description: > # Sequency Graph-Native Trading API Graph-native API for trading intelligence, built on FalkorDB. ## Features - **Screener**: Filter stocks using graph-native queries with relationship expansion - **Stock Detail**: Complete stock context with all relationships - **Confluence Scoring**: Setup quality assessment with weighted components - **Strategy Matching**: Find matching options strategies via graph traversal - **Market Context**: Current market-wide context for trading decisions ## Data Sources All data is sourced from the FalkorDB knowledge graph, populated by: - Pattern detector (Go) - Technical indicators, patterns - Graph sync service - Levels, volume profiles, news, day classification version: 1.0.0 servers: [] security: [] paths: /api/graph/v1/execution/preflight: post: tags: - Execution summary: Check risk gates for an order without placing it description: >- Runs the same daily-loss latch, kill switch, and chart paper rule as start-from-card, but places nothing. Returns whether the order would pass and, if not, the verbatim block reasons. operationId: preflight_api_graph_v1_execution_preflight_post requestBody: content: application/json: schema: $ref: '#/components/schemas/PreflightRequest' required: true responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/PreflightResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' components: schemas: PreflightRequest: properties: symbol: type: string title: Symbol description: Ticker symbol instrument_type: type: string enum: - equity - option title: Instrument Type default: equity contract_symbol: anyOf: - type: string pattern: ^[A-Z]{1,6}\d{6}[CP]\d{8}$ - type: 'null' title: Contract Symbol description: OCC contract identity required for an option review side: type: string enum: - buy - sell title: Side description: Order side qty: type: number exclusiveMinimum: 0 title: Qty description: Order quantity order_type: type: string enum: - market - limit - stop - stop_limit title: Order Type description: Order type limit_price: anyOf: - type: number - type: 'null' title: Limit Price description: Limit price when applicable stop_price: anyOf: - type: number - type: 'null' title: Stop Price description: Stop trigger when applicable reference_price: anyOf: - type: number exclusiveMinimum: 0 - type: 'null' title: Reference Price description: Current quote for market-order risk strategy: type: string enum: - single - bracket - oco - oto title: Strategy default: single take_profit_price: anyOf: - type: number exclusiveMinimum: 0 - type: 'null' title: Take Profit Price stop_loss_price: anyOf: - type: number exclusiveMinimum: 0 - type: 'null' title: Stop Loss Price time_in_force: type: string enum: - day - gtc title: Time In Force default: day idempotency_key: anyOf: - type: string maxLength: 128 minLength: 1 - type: 'null' title: Idempotency Key description: >- Stable chart intent identity; required to issue an OR-03 submit approval source: anyOf: - type: string - type: 'null' title: Source description: >- Origin tag; a value starting with 'chart' triggers the paper-lock rule order_handoff_id: anyOf: - type: string pattern: ^handoff_[a-f0-9]{24}$ - type: 'null' title: Order Handoff Id description: Durable OR-06 Review lineage; valid only for chart_agent_proposal type: object required: - symbol - side - qty - order_type title: PreflightRequest description: >- Request to check risk gates for an order WITHOUT placing it (Slice 1 / C2). Mirrors the shape of a chart-lab order intent. BL-02 runs the same current deterministic Guardian adapter used immediately before submit for single orders. Multi-leg broker strategies remain fail-closed pending OR-03. PreflightResponse: properties: passed: type: boolean title: Passed description: True when no gate blocked the order blocked_reasons: items: type: string type: array title: Blocked Reasons description: >- Human-readable reasons the order would be blocked (empty when passed) effective_trading_mode: type: string title: Effective Trading Mode description: >- The trading mode that would be used (from the user profile): 'paper' or 'live' approval_id: anyOf: - type: string format: uuid - type: 'null' title: Approval Id description: >- Server-issued approval bound to the immutable intent; absent when blocked intent_hash: anyOf: - type: string pattern: ^[a-f0-9]{64}$ - type: 'null' title: Intent Hash approval_expires_at: anyOf: - type: string format: date-time - type: 'null' title: Approval Expires At risk_decision_id: anyOf: - type: string pattern: ^[a-f0-9]{64}$ - type: 'null' title: Risk Decision Id risk_policy_version: anyOf: - type: string - type: 'null' title: Risk Policy Version order_handoff_id: anyOf: - type: string pattern: ^handoff_[a-f0-9]{24}$ - type: 'null' title: Order Handoff Id order_review: anyOf: - additionalProperties: true type: object - type: 'null' title: Order Review description: >- Immutable owner-scoped executable review; absent for legacy advisory calls type: object required: - passed - effective_trading_mode title: PreflightResponse description: Result of a non-placing risk-gate check (Slice 1 / C2). HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError ````