> ## 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 a batch of orders by id (max 100) > Cancel up to 100 orders by id in one request. Each id is resolved against the authenticated wallet; ids that are unknown, belong to another wallet, or are already terminal come back under `notCancelled` (no existence leak). Duplicate ids are de-duplicated. The whole batch runs as one PG transaction — a single advisory-lock acquire and one COMMIT — with the matcher fan-out fired off the response path, so latency is bounded by a single round-trip rather than N. Idempotent: re-cancelling a terminal order reports `already_terminal`. Rate limited at 5 req/sec per wallet. No KYC / deposit-tier gating — cancellation is always permitted. ## OpenAPI ````yaml /api-reference/openapi.json post /api/orders/cancel-batch 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-batch: post: tags: - Orders summary: Cancel a batch of orders by id (max 100) description: >- Cancel up to 100 orders by id in one request. Each id is resolved against the authenticated wallet; ids that are unknown, belong to another wallet, or are already terminal come back under `notCancelled` (no existence leak). Duplicate ids are de-duplicated. The whole batch runs as one PG transaction — a single advisory-lock acquire and one COMMIT — with the matcher fan-out fired off the response path, so latency is bounded by a single round-trip rather than N. Idempotent: re-cancelling a terminal order reports `already_terminal`. Rate limited at 5 req/sec per wallet. No KYC / deposit-tier gating — cancellation is always permitted. operationId: OrdersController_cancelBatch parameters: - $ref: '#/components/parameters/UserWalletHeader' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CancelBatchRequest' responses: '200': description: Per-id outcome split into `cancelled` and `notCancelled`. content: application/json: schema: $ref: '#/components/schemas/CancelBatchRespDto' '400': description: Empty array or more than 100 ids. Nothing is cancelled. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '401': $ref: '#/components/responses/Unauthorized' '403': description: API-key caller is missing the orders:write scope. content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' '429': $ref: '#/components/responses/RateLimited' '503': $ref: '#/components/responses/ServiceUnavailable' 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: $ref: '#/components/schemas/EthereumAddress' example: '0x1234567890abcdef1234567890abcdef12345678' schemas: CancelBatchRequest: type: object required: - orderIds properties: orderIds: type: array minItems: 1 maxItems: 100 items: type: string description: >- 1–100 server-side order ids (UUIDs). Duplicates are de-duplicated server-side. CancelBatchRespDto: type: object properties: cancelled: type: array items: type: string description: Ids of the orders that transitioned to CANCELLED. notCancelled: type: object additionalProperties: type: string description: >- Map of orderId → reason for every id that was not cancelled. Reasons: `not_found` (unknown id, or an order owned by another wallet — no existence leak), `already_terminal` (already CANCELLED / FILLED / REJECTED / EXPIRED — idempotent), `lock_invariant` (a per-order balance-lock invariant tripped; the rest of the batch is unaffected), `unknown` (transient failure — safe to retry). required: - cancelled - notCancelled ErrorEnvelope: type: object required: - error properties: status: type: integer example: 400 error: type: object required: - code - message properties: code: type: string example: bad_request message: type: string details: type: object additionalProperties: true trace_id: type: string EthereumAddress: type: string pattern: ^0x[a-fA-F0-9]{40}$ example: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb3' Error: type: object required: - code properties: code: type: string description: >- Machine-readable code (e.g. `insufficient_funds`, `market_not_open`, `rate_limited`). message: type: string details: type: object additionalProperties: true responses: Unauthorized: description: Missing, invalid, or expired credentials. content: application/json: schema: $ref: '#/components/schemas/Error' RateLimited: description: >- Rate limit exceeded. `Retry-After` and `X-RateLimit-Reset` headers are set. headers: Retry-After: schema: type: integer X-RateLimit-Limit: schema: type: integer X-RateLimit-Remaining: schema: type: integer X-RateLimit-Reset: schema: type: integer content: application/json: schema: $ref: '#/components/schemas/Error' ServiceUnavailable: description: Downstream service (exchange, matcher) unavailable. content: application/json: schema: $ref: '#/components/schemas/Error' 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. ````