> ## 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. # Get Concert Cancellation Market Availability > Returns which on-request concert markets can be created: whether creation is on, the covers offered, how far ahead a show may be scheduled, and the metros whose concerts `GET /concert_cancellation_markets/concerts` lists. A cover missing from `covers` can't be created. Existing markets are unaffected. Each metro carries the number of upcoming shows listed for it. Pass `date_from` and `date_to` to count only the shows a listing with the same dates would return. ## OpenAPI ````yaml /openapi.yaml get /concert_cancellation_markets/availability openapi: 3.0.0 info: title: Kalshi Trade API Manual Endpoints version: 3.36.0 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: /concert_cancellation_markets/availability: get: tags: - markets summary: Get Concert Cancellation Market Availability description: | Returns which on-request concert markets can be created: whether creation is on, the covers offered, how far ahead a show may be scheduled, and the metros whose concerts `GET /concert_cancellation_markets/concerts` lists. A cover missing from `covers` can't be created. Existing markets are unaffected. Each metro carries the number of upcoming shows listed for it. Pass `date_from` and `date_to` to count only the shows a listing with the same dates would return. operationId: GetConcertCancellationAvailability parameters: - name: date_from in: query required: false description: >- Count shows from this venue-local date, as YYYY-MM-DD. Omitted counts from today. schema: type: string x-oapi-codegen-extra-tags: validate: omitempty,datetime=2006-01-02 - name: date_to in: query required: false description: >- Count shows up to this venue-local date, inclusive, as YYYY-MM-DD. Omitted for no end. schema: type: string x-oapi-codegen-extra-tags: validate: omitempty,datetime=2006-01-02 responses: '200': description: Availability retrieved successfully content: application/json: schema: $ref: >- #/components/schemas/GetConcertCancellationAvailabilityResponse '400': $ref: '#/components/responses/BadRequestError' '429': $ref: '#/components/responses/RateLimitError' '500': $ref: '#/components/responses/InternalServerError' components: schemas: GetConcertCancellationAvailabilityResponse: type: object required: - enabled - covers - max_days_ahead - metros properties: enabled: type: boolean description: Whether concert cancellation markets can be created at all. covers: type: array items: $ref: '#/components/schemas/ConcertCover' description: The covers on offer. A cover left out can't be created. max_days_ahead: type: integer format: int32 description: How many days ahead a show may be scheduled for a new market. metros: type: array items: $ref: '#/components/schemas/ConcertMetro' description: The metros whose concerts are listed. ConcertCover: type: string enum: - postponed - cancelled - either x-enum-varnames: - ConcertCoverPostponed - ConcertCoverCancelled - ConcertCoverEither description: | What a concert cancellation market pays on, read from the show's listing after its scheduled date has ended: - `postponed`: Yes when the show is listed as postponed, or as taking place on any other date. A show listed as canceled resolves to No. - `cancelled`: Yes when the show is listed as canceled. - `either`: Yes in both of those cases. ConcertMetro: type: object required: - id - name - upcoming_shows properties: id: type: string description: Metro id to pass as `metro_id` when listing concerts. example: jambase:1 name: type: string description: Metro name. example: New York latitude: type: number format: double description: Latitude of the metro's center. Left out when unknown. longitude: type: number format: double description: Longitude of the metro's center. Left out when unknown. upcoming_shows: type: integer format: int32 description: >- Upcoming shows listed in the metro, within the request's dates when given. 0 when no count is available. x-omitempty: false 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' RateLimitError: description: >- Rate limit exceeded. The default cost is 10 tokens per request. Use GET /trade-api/v2/account/endpoint_costs to list non-default endpoint costs. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.