> ## Documentation Index > Fetch the complete documentation index at: https://docs.testnet.dev.adipredictstreet.com/llms.txt > Use this file to discover all available pages before exploring further. # Cancel all open orders > Cancels every open order for the authenticated wallet, optionally scoped to a single market. Operates on a snapshot of the orders open at request receipt — orders placed concurrently while the cancel runs are not guaranteed to be included; stop quoting before relying on a clean book. Rate limited at 1 req/sec per wallet — intended for operational wind-down, not per-order cleanup. No KYC / deposit-tier gating — cancellation is always permitted. **Breaking change (2026-06):** the response is now `{ cancelled: string[], notCancelled: {} }` (previously `{ cancelled: number }`). Read `cancelled.length` for the count; per-order failures that were previously dropped from the count now appear in `notCancelled` with a reason. ## OpenAPI ````yaml /api-reference/openapi.json post /api/orders/cancel-all openapi: 3.1.0 info: title: PredictStreet core-api description: >- Client-facing HTTP gateway for the PredictStreet prediction-market platform. This spec is hand-written against the NestJS controllers and DTOs in core-api/src/modules/. For the source-of-truth live spec, run `./scripts/pull-openapi.sh` against a running core-api (NestJS exposes it at /api/docs-json). **Partner kinds.** Every authenticated endpoint resolves a request's *effective wallet* from the partner row. `single_wallet` partners bind to one `associatedWallet` set at creation. `multi_wallet` partners declare the actor on every request via an `X-User-Wallet: 0x<40-hex>` header. See the [Partner kinds](/auth/api-keys#partner-kinds) doc for the full contract. version: '2026-06-16' contact: name: PredictStreet partners email: partners@predictstreet.com servers: - url: https://core.api.dev.predictstreet.sde.adifoundation.ai description: Testnet (partner integrator API — final domain TBD) security: [] tags: - name: Deposits description: >- Gasless USDC deposit relay - submit a signed EIP-2612 permit and the platform broadcasts the on-chain deposit for you (no gas). - name: Events description: >- Polymarket-style event grouping with football metadata (group, stage, teams, tags). - name: Tags description: Curated tag taxonomy used to filter events. - name: Markets description: 'Public market data: list, detail, orderbook, trades, OHLC.' - name: Orders description: >- Signed-order place / cancel / read. Requires `X-Api-Key` with `orders:read` / `orders:write` scope; every write additionally requires an EIP-712 signature over the order. - name: Portfolio description: >- Balances, positions, trades, fees, vault info for the key's `associatedWallet`. Requires `X-Api-Key` with `portfolio:read` scope. - name: Matches description: >- admin.matches aggregate — groups several events into one fixture/card (1X2 + first-scorer + over-under under one matchup). - name: Vault description: >- Backend co-signatures for ERC-1155 split / merge, and recovery for off-chain locks when the corresponding chain tx never confirmed. Requires `X-Api-Key` with `vault:write` scope plus an EIP-712 signature over the operation. - name: Leaderboard description: Public ranked leaderboard across PnL / volume buckets. - name: Search description: Global search across users, events, and matches. - name: Withdrawal Security description: >- Self-service withdrawal 2FA (TOTP) and withdrawal-address whitelist. Same endpoints serve the frontend (Privy JWT) and API-key integrators. Mutations need `vault:write`, reads `portfolio:read`. Both are opt-in per wallet and only gate withdrawals once the platform enables withdrawal-security enforcement. paths: /api/orders/cancel-all: post: tags: - Orders summary: Cancel all open orders description: >- Cancels every open order for the authenticated wallet, optionally scoped to a single market. Operates on a snapshot of the orders open at request receipt — orders placed concurrently while the cancel runs are not guaranteed to be included; stop quoting before relying on a clean book. Rate limited at 1 req/sec per wallet — intended for operational wind-down, not per-order cleanup. No KYC / deposit-tier gating — cancellation is always permitted. **Breaking change (2026-06):** the response is now `{ cancelled: string[], notCancelled: {} }` (previously `{ cancelled: number }`). Read `cancelled.length` for the count; per-order failures that were previously dropped from the count now appear in `notCancelled` with a reason. operationId: OrdersController_cancelAll parameters: - $ref: '#/components/parameters/UserWalletHeader' requestBody: required: false content: application/json: schema: $ref: '#/components/schemas/CancelAllDto' type: object properties: marketId: type: string responses: '200': description: '' content: application/json: schema: $ref: '#/components/schemas/CancelAllRespDto' '201': description: Cancel-all request forwarded to exchange-service. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' type: object '400': description: Bad body shape (e.g. marketId must be a string when provided). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '401': description: Missing or invalid auth. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '403': description: API-key caller is missing the orders:write scope. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '429': description: >- Rate-limited (1 per second per wallet — this endpoint is intentionally narrow because a runaway cancel-all loop can bury the matcher). content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' security: - ApiKeyAuth: - orders:write components: parameters: UserWalletHeader: name: X-User-Wallet in: header required: false description: >- **Required for `multi_wallet` partners on every authenticated request; ignored for `single_wallet`.** Declares the acting end-user wallet for this request — drives KYC checks, balances/positions/orders attribution, rate-limit buckets, and audit. Lower-cased server-side. Missing on a multi_wallet key → 401 `api_key_user_wallet_required`; malformed → 401 `api_key_user_wallet_invalid`. The on-chain `CTFExchange`/`Vault` contracts still verify EIP-712 signer ↔ vault binding, so loosening API-layer attribution is safe by construction. schema: $ref: '#/components/schemas/EthereumAddress' example: '0x1234567890abcdef1234567890abcdef12345678' schemas: CancelAllDto: type: object properties: marketId: type: string description: >- Optional market scope. When omitted, cancels every open order across every market for the authenticated wallet. CancelAllRespDto: type: object properties: cancelled: type: array items: type: string description: >- Ids of the orders that transitioned to CANCELLED. **Breaking change (2026-06):** this field was previously a count (`number`); it is now the array of cancelled order ids. Use `cancelled.length` for the count. notCancelled: type: object additionalProperties: type: string description: >- Map of orderId → reason for every snapshot order that was not cancelled. Same reason vocabulary as POST /api/orders/cancel-batch (`not_found`, `already_terminal`, `lock_invariant`, `unknown`). These per-order failures were previously dropped silently from the count. marketId: type: string description: Echoes the request scope when set. required: - cancelled - notCancelled ErrorEnvelope: type: object required: - error properties: status: type: integer example: 400 error: type: object required: - code - message properties: code: type: string example: bad_request message: type: string details: type: object additionalProperties: true trace_id: type: string EthereumAddress: type: string pattern: ^0x[a-fA-F0-9]{40}$ example: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb3' securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-Api-Key description: >- Partner / integrator key — format `ps_live__`. Issued by PredictStreet ops via the admin panel; never self-service. Never ship to a browser. `multi_wallet` partners must additionally send `X-User-Wallet: 0x<40-hex>` on every authenticated request to declare the acting wallet. See the [API keys guide](/auth/api-keys) for scope taxonomy, partner kinds, rate limits, and rotation procedure. ````