Check one precise instant
POST /v1/availability/check
Feasibility at that instant, not alignment to the grid: a start the search would not offer still gets structured reasons.
Authorizations
Section titled “Authorizations ”Parameters
Section titled “ Parameters ”Header Parameters
Section titled “Header Parameters ”The dated API version to speak. Defaults to 2026-09-01; an unsupported value is a 400.
Example
2026-09-01Which Bookrail tool the caller is, recorded as actor.via on every event the request writes. A closed list: an unknown value is a 400. Absent means the request declared no tool.
Retry-safety key, 1 to 255 characters. The same key within 24 hours replays the first response, errors included, and never produces a second effect.
Request Body required
Section titled “Request Body required ”object
Identifier of a service, prefixed with svc_.
Example
svc_0198f0c2a1b47e2e9a1c0f4d5e6a7b8cISO 8601 instant with an explicit offset. Any offset is accepted on input; every instant is returned in UTC.
Example
2026-09-08T07:00:00ZResponses
Section titled “ Responses ”Success.
object
Identifier of a service, prefixed with svc_.
Example
svc_0198f0c2a1b47e2e9a1c0f4d5e6a7b8cISO 8601 instant in UTC.
Example
2026-09-08T07:00:00ZAmount in the minor unit of the currency (cents for EUR).
object
Which service.pricing_rules entry produced price, if any.
object
Position in service.pricing_rules.
The rule label, when it has one.
object
object
Identifier of a resource, prefixed with res_.
Example
res_0198f0c2a1b47e2e9a1c0f4d5e6a7b8cPresent only when available is false.
object
Identifier of a resource, prefixed with res_.
Example
res_0198f0c2a1b47e2e9a1c0f4d5e6a7b8cBare identifier of the booking, hold, block or exception responsible; code says which.
Present when the window is well formed but no slot can exist for a reason that covers all of it, e.g. customer_limit_reached.
object
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
true when the body is the stored answer of an earlier request with the same Idempotency-Key.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Error codes: idempotency_key_reused, invalid_body, invalid_range, parameter_invalid, parameter_missing, range_too_large, service_without_duration, timezone_missing, unsupported_api_version.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Error codes: invalid_api_key, invalid_authorization_header, missing_api_key, revoked_api_key.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Error codes: resource_missing.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Error codes: idempotency_key_in_progress.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Error codes: rate_limited.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.
Whole seconds to wait before sending this request again. At least 1.
Error codes: internal_error.
object
object
Machine readable code. The set is per operation; each response below lists the ones it can produce.
The field or header the error is about, when there is one.
What to do next, when there is one thing to do. Present on the errors that are about the state of the deployment rather than about the request.
Headers
Section titled “Headers ”Identifier of this request. Quote it to support.
The API version this response was produced with.
Requests this key may have in flight at one instant: the burst of its policy.
Requests this key may still make right now, as a whole number.
Whole seconds until RateLimit-Remaining is back at RateLimit-Limit.
unavailable when no limit could be applied to this request, because the store that holds the counters did not answer. The three counters are then absent and the request was served.
<confirmed>/<included>: the confirmed live bookings of the account this month, over the ones its plan includes, as they stood when this request started. On responses to live keys only, and absent for a plan whose included bookings are negotiated and for a key scoped to a tenant.