> ## Documentation Index > Fetch the complete documentation index at: https://docs.kalshi.com/llms.txt > Use this file to discover all available pages before exploring further. # Update Order Group Limit > Updates the order group contracts limit (rolling 15-second window). If the updated limit would immediately trigger the group, all orders in the group are canceled and the group is triggered. ## OpenAPI ````yaml /openapi.yaml put /portfolio/order_groups/{order_group_id}/limit openapi: 3.0.0 info: title: Kalshi Trade API Manual Endpoints version: 3.34.0 description: >- Manually defined OpenAPI spec for endpoints being migrated to spec-first approach servers: - url: https://external-api.kalshi.com/trade-api/v2 description: Production Trade API server - url: https://api.elections.kalshi.com/trade-api/v2 description: Production shared API server, also supported - url: https://external-api.demo.kalshi.co/trade-api/v2 description: Demo Trade API server - url: https://demo-api.kalshi.co/trade-api/v2 description: Demo shared API server, also supported security: [] tags: - name: api-keys description: API key management endpoints - name: orders description: Order management endpoints - name: order-groups description: Order group management endpoints - name: portfolio description: Portfolio and balance information endpoints - name: communications description: Request-for-quote (RFQ) endpoints - name: multivariate description: Multivariate event collection endpoints - name: exchange description: Exchange status and information endpoints - name: live-data description: Live data endpoints - name: markets description: Market data endpoints - name: milestone description: Milestone endpoints - name: search description: Search and filtering endpoints - name: incentive-programs description: Incentive program endpoints - name: fcm description: FCM member specific endpoints - name: events description: Event endpoints - name: structured-targets description: Structured targets endpoints paths: /portfolio/order_groups/{order_group_id}/limit: put: tags: - order-groups summary: Update Order Group Limit description: ' Updates the order group contracts limit (rolling 15-second window). If the updated limit would immediately trigger the group, all orders in the group are canceled and the group is triggered.' operationId: UpdateOrderGroupLimit parameters: - $ref: '#/components/parameters/OrderGroupIdPath' - $ref: '#/components/parameters/SubaccountQueryDefaultPrimary' - $ref: '#/components/parameters/ExchangeIndexQuery' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/UpdateOrderGroupLimitRequest' responses: '200': description: Order group limit updated successfully content: application/json: schema: $ref: '#/components/schemas/EmptyResponse' '400': $ref: '#/components/responses/BadRequestError' '401': $ref: '#/components/responses/UnauthorizedError' '404': $ref: '#/components/responses/NotFoundError' '500': $ref: '#/components/responses/InternalServerError' security: - kalshiAccessKey: [] kalshiAccessSignature: [] kalshiAccessTimestamp: [] components: parameters: OrderGroupIdPath: name: order_group_id in: path required: true description: Order group ID schema: type: string SubaccountQueryDefaultPrimary: name: subaccount in: query required: false description: >- Subaccount number (0 for primary, 1-63 for subaccounts). Defaults to 0. Subaccount-restricted API keys default to their locked subaccount and must omit this parameter or pass their locked subaccount. schema: type: integer minimum: 0 ExchangeIndexQuery: name: exchange_index in: query description: Identifier for an exchange shard. Defaults to 0. schema: $ref: '#/components/schemas/ExchangeIndex' x-go-type-skip-optional-pointer: true schemas: UpdateOrderGroupLimitRequest: type: object properties: contracts_limit: type: integer format: int64 minimum: 1 description: >- New maximum number of contracts that can be matched within this group over a rolling 15-second window. Whole contracts only. Provide contracts_limit or contracts_limit_fp; if both provided they must match. x-go-type-skip-optional-pointer: true x-oapi-codegen-extra-tags: validate: omitempty,gte=1 contracts_limit_fp: $ref: '#/components/schemas/FixedPointCount' nullable: true description: >- String representation of the new maximum number of contracts that can be matched within this group over a rolling 15-second window. Provide contracts_limit or contracts_limit_fp; if both provided they must match. EmptyResponse: type: object description: An empty response body ExchangeIndex: type: integer description: Identifier for an exchange shard. example: 0 FixedPointCount: type: string description: >- Fixed-point contract count string (2 decimals, e.g., "10.00"; referred to as "fp" in field names). Requests accept 0-2 decimal places (e.g., "10", "10.0", "10.00"); responses always emit 2 decimals. Fractional contract values (e.g., "2.50") are supported; the minimum granularity is 0.01 contracts. example: '10.00' ErrorResponse: type: object properties: code: type: string description: Error code message: type: string description: Human-readable error message details: type: string description: Additional details about the error, if available responses: BadRequestError: description: Bad request - invalid input content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' UnauthorizedError: description: Unauthorized - authentication required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' NotFoundError: description: Resource not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: kalshiAccessKey: type: apiKey in: header name: KALSHI-ACCESS-KEY description: Your API key ID kalshiAccessSignature: type: apiKey in: header name: KALSHI-ACCESS-SIGNATURE description: >- Base64 signature of the pre-sign text (timestamp + method + path) made with the API key's algorithm - RSA-PSS with SHA-256 for RSA keys, Ed25519 for Ed25519 keys kalshiAccessTimestamp: type: apiKey in: header name: KALSHI-ACCESS-TIMESTAMP description: Request timestamp in milliseconds ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.