API referenceprice
Hold
POST
/v1/holdIdempotency-Key requiredAccepts X-Api-Key · oauthClientCredentials · bearer
Reserve without payment where capability exists
Returns holdRef + holdExpiresAt. TTLs range from ~90s (MOV) to multi-day (CRU); declared in capabilities and offer conditions.Show more
Returns holdRef + holdExpiresAt. TTLs range from ~90s (MOV) to multi-day (CRU); declared in capabilities and offer conditions. Expiry auto-releases + hold.expired event. While the tenant is SUSPENDED a new hold is refused 403 TENANT_SUSPENDED, with one exception: a same-key, same-body retry of a hold this tenant completed before the suspension is served its stored answer (Idempotency-Replayed true) — nothing new is started. A fresh, expired or still in-flight key is 403 TENANT_SUSPENDED, a different body under the key 409 IDEMPOTENCY_CONFLICT.Headers
- TeststringOptional
Sandbox scenario simulation: price_changed | sold_out | ambiguous | hold_expired | payment_declined | supplier_timeout | partial_search | duplicate_order (case-insensitive).Show more
Sandbox scenario simulation: price_changed | sold_out | ambiguous | hold_expired | payment_declined | supplier_timeout | partial_search | duplicate_order (case-insensitive). Read on every travel verb before the permission wall and idempotency; a scenario sent on a verb it does not apply to has no effect. Every simulated error carries details.simulated true and details.scenario. price_changed (reprice, hold, orders) → 409 PRICE_CHANGED; sold_out → 422 SOLD_OUT; hold_expired (orders) → 409 HOLD_EXPIRED; duplicate_order (orders) → 409 DUPLICATE_ORDER existingOrderRef MO-SIM-DUPLICATE; payment_declined (orders, POST /v1/payments/{paymentId}/confirm) → 402 PAYMENT_FAILED; supplier_timeout → 502 UPSTREAM_UNAVAILABLE; partial_search (search) → two SUPPLIER_DROPPED warnings; ambiguous (orders) → 202 PENDING_RECONCILIATION on an MO-SIM- ref. wallet_insufficient → 402 PAYMENT_FAILED details.reason WALLET_INSUFFICIENT. - Idempotency-KeystringRequired
Mandatory on mutations: **48h TTL**; replay with same body-hash returns the original response with Idempotency-Replayed true; same key + different body is 409 IDEMPOTENCY_CONFLICT; in-flight duplicate…Show more
Mandatory on mutations: **48h TTL**; replay with same body-hash returns the original response with Idempotency-Replayed true; same key + different body is 409 IDEMPOTENCY_CONFLICT; in-flight duplicate is 409 IDEMPOTENCY_IN_PROGRESS.
Request body
- contextMondeeContextRequiredRequest context envelope. domain selects the product; URL carries the verb.
13 child attributes
- domainstringRequired
Canonical code or alias per the domain registry; unknown = 400 UNKNOWN_DOMAIN.Show more
Canonical code or alias per the domain registry; unknown = 400 UNKNOWN_DOMAIN. APTSVC (airport services: meet and assist, porter, buggy, wheelchair, concierge bundles) is registered by this release beside FASTTRK. FNB (dining: restaurant reservations; aliases REST, DINING, RESTAURANT, RESTAURANTS; category DO, money model FREE, artifact CONF_NUMBER, served under the dining service key with base path /v1/dining) is registered since v1.7.0. GIFT (gift cards; category SUPPORT, money model MERCHANT, artifact VOUCHER, served under the gift-cards service key with base path /v1/gift-cards) is described from v1.31.0: until the backend seam change merges, domain GIFT answers 400 UNKNOWN_DOMAIN. AICONT (the Example Content experience-scraping service's operations; category DO, money model MERCHANT, artifact NONE, served under the aicont service key with base path /v1/aicont; a content supplier) has its typed intent from v1.39.0; it answers only where its supplier set is landed and ACTIVE. PARK (airport and cruise-port parking; aliases PRK and PARKING; category SUPPORT, money model MERCHANT, artifact CONF_NUMBER — the supplier's gate barcode is the order's BARCODE document — served under the parking service key with base path /v1/parking) has its typed intent and its verb book from v1.55.0. - actionstringOptionalMirrors the verb; optional (server sets from route)
- enricharray of stringOptional
Opt-in enrichment on shopping answers: EMISSIONS | RATINGS | AMENITIES | ROUTE.Show more
Opt-in enrichment on shopping answers: EMISSIONS | RATINGS | AMENITIES | ROUTE. Absent = the tenant's configured default. Decoration reads cache or the pre-warmed store only and never delays the verb. - session_idstringOptionalYour own id for the user session the call belongs to.
- transaction_idstringOptionalConstant across one shop-to-book journey
- currencystringOptionalISO-4217; absent = tenant default; blank/invalid = 400
- localestringOptionalThe language and region for text in the answer, as a BCP 47 tag (for example en-US).
- posstringOptionalPoint-of-sale market, orthogonal to tenant
- clientReferencestringOptionalCaller's own id; searchable; the reconciliation primitive
- fareSourcePolicystringOptionalBYOC tenants only; narrows, never widens, the configured strategy
- DEFAULT
- OWN_ONLY
- MONDEE_ONLY
- BLEND
- includeUpstreambooleanOptionalDefault false
Ask for the supplier's own answer, verbatim, beside what the platform read from it: Offer.upstream on every offer of a search, poll, detail or flight-returns answer, AirReturnOption.upstream on each…Show more
Ask for the supplier's own answer, verbatim, beside what the platform read from it: Offer.upstream on every offer of a search, poll, detail or flight-returns answer, AirReturnOption.upstream on each listed return, RepriceResponse.message.upstream and OrderItem.upstream. Served only where the deployment enables upstream pass-through; elsewhere a true value is 400 VALIDATION details.reason UPSTREAM_PASS_THROUGH_DISABLED, details.field context.includeUpstream, before any supplier call. Absent or false, nothing changes. The block is informational: offerRef, repriceRef and price stay the only handles and the only price of record. - selectionSelectionPreferencesOptional
context.selection: the caller's offer-selection preferences for this search.Show more
context.selection: the caller's offer-selection preferences for this search. Each field set here replaces the tenant's and the platform's for this search, within the caller's entitlements and the platform's ceilings, unless the tenant has locked request overrides. It never widens reach: a preferred supplier the caller may not reach is ignored with context.warnings[] SELECTION_PREFERENCE_IGNORED. Ignored where selection is off.4 child attributes
- viewstringOptionalSELECTED (one entry per item, alternatives under the winner) or ALL (the flat list, tagged)
- SELECTED
- ALL
- objectivestringOptional
How the winner of an item is picked. CHEAPEST is the lowest comparison total; REFUNDABLE_FIRST the lowest total among offers free to cancel now (else CHEAPEST); PREFERRED_SUPPLIERS the first of…Show more
How the winner of an item is picked. CHEAPEST is the lowest comparison total; REFUNDABLE_FIRST the lowest total among offers free to cancel now (else CHEAPEST); PREFERRED_SUPPLIERS the first of preferSuppliers with an offer inside the tenant's preference band (else CHEAPEST); PLATFORM_DEFAULT defers to the tenant and platform policies. Any other value is 400 VALIDATION details.field context.selection.objective.- CHEAPEST
- REFUNDABLE_FIRST
- PREFERRED_SUPPLIERS
- PLATFORM_DEFAULT
- preferSuppliersarray of stringOptionalSupplier codes as in fareSource.supplier, most preferred first (PREFERRED_SUPPLIERS)
- excludeSuppliersarray of stringOptionalSupplier codes whose offers this search does not show; narrows only
- onBehalfOfOnBehalfOfOptional
Who a desk or agent books FOR: stamped into the audit actor and the clientReference lineage of the order.Show more
Who a desk or agent books FOR: stamped into the audit actor and the clientReference lineage of the order. Send customerId (a customer or traveller id the tenant knows) or traveler (a free-text identity), or both. Attribution only: it grants nothing, and the credential's own actor is still what authorises the call. Audit mapping: the audit actor.onBehalfOf (a string) is customerId when present, otherwise "traveler:<redacted-hash>" (a stable hash of traveler, never the text).2 child attributes
- customerIdstringOptionalA customer or traveller id your own system knows.
- travelerstringOptional
Free-text traveller identity when there is no customer id.Show more
Free-text traveller identity when there is no customer id. Personal data: it is logged redacted, never in clear. A card number in it is 400 VALIDATION details.reason INSTRUMENT_DATA_REFUSED.
- messageobjectRequired
1 child attribute
- intentobjectOptionalPer-domain verb intent. Typed in v1.7.0 only for the FNB key below; every other key is read as before.
1 child attribute
- experienceSelectionDiningExperienceSelectionOptional
Which experience and how many diners take each of its price options.Show more
Which experience and how many diners take each of its price options. An experience with several prices (e.g. a tasting menu and a wine pairing, or adult and child) is priced per diner: the counts must add up to the party size. On search it narrows the offers to that experience; on reprice, hold and order it fixes the price split the offer is firmed, locked and booked with (Example Dining experience total and reservation `experience` block). A selection whose version is not the experience's current one is 409 CONFLICT details.reason EXPERIENCE_VERSION_CHANGED (re-read the detail); counts that do not add up to the party are 400 VALIDATION details.field message.intent.experienceSelection.3 child attributes
- experienceIdinteger · int64Required
- versionintegerOptionalThe experience version the client showed (DiningExperience.version)
- pricesarray of objectRequired
Responses
- 200Hold createdHoldResponse
- 307
HOME_REGION_REDIRECT: this tenant's writer region is not the region that received the request.Show more
HOME_REGION_REDIRECT: this tenant's writer region is not the region that received the request. Nothing was executed at this region. There is no body. Clients MUST NOT auto-follow this redirect: a cross-origin redirect makes most HTTP stacks drop the Authorization header, and some drop Location altogether. The client MUST re-send the same request (method and body unchanged) to Location WITH its credentials and the SAME Idempotency-Key. Follow-up sends are deduplicated on the Idempotency-Key in the home region. - 400VALIDATION or UNKNOWN_DOMAINApiErrorResponse
- 401ApiErrorResponse
UNAUTHENTICATED — missing or expired token.Show more
UNAUTHENTICATED — missing or expired token. Declared on every operation because `security` is declared globally at the document root: every route is authenticated, so every route can answer 401. - 403ApiErrorResponse
PERMISSION_DENIED | TAB_DISABLED | OUT_OF_SCOPE | TENANT_MISMATCH, exactly as Forbidden, plus TENANT_SUSPENDED — declared on the verbs that start new business: search and poll, detail, schedules,…Show more
PERMISSION_DENIED | TAB_DISABLED | OUT_OF_SCOPE | TENANT_MISMATCH, exactly as Forbidden, plus TENANT_SUSPENDED — declared on the verbs that start new business: search and poll, detail, schedules, seatmap, ancillaries, rules, reprice, hold and order create, and on the payments routes (intent, confirm, 3ds-callback, checkout-session). While the caller's tenant is SUSPENDED every such request is refused TENANT_SUSPENDED, except an idempotent replay of an answer completed before the suspension (see hold / createOrder), before the entitlement and permission checks, and it is not retryable: the answer changes only when platform ops reinstates the tenant. The post-booking verbs (cancel-quote, cancel, amend), the order reads, and capture and refund on an existing payment intent (whose 403 is PaymentForbidden) stay up, so no traveller is stranded. On the production deployment the same requests are refused PERMISSION_DENIED with details.reason TENANT_NOT_LIVE while the tenant's production activation has not been approved, whichever credential is presented, console session or API key; use the sandbox deployment until activation. Not retryable; the post-booking verbs stay up. - 404NOT_FOUND — unknown or expired ref (unguessable refs, 15)ApiErrorResponse
- 405ApiErrorResponse
VALIDATION — the public edge serves GET, POST, PUT, PATCH and DELETE only; any other method is refused before the platform sees it (details.reason METHOD_NOT_ALLOWED, details.source edge).Show more
VALIDATION — the public edge serves GET, POST, PUT, PATCH and DELETE only; any other method is refused before the platform sees it (details.reason METHOD_NOT_ALLOWED, details.source edge). Not retryable as sent. - 409ApiErrorResponse
State conflict: OFFER_EXPIRED | HOLD_EXPIRED | IDEMPOTENCY_CONFLICT | CONFLICT | QUOTE_EXPIRED.Show more
State conflict: OFFER_EXPIRED | HOLD_EXPIRED | IDEMPOTENCY_CONFLICT | CONFLICT | QUOTE_EXPIRED. CONFLICT with details.reason HOLD_NOT_SUPPORTED when the offer cannot be held. QUOTE_EXPIRED carries details.reason NO_SELL_PRICE_STAMP or SELL_PRICE_STAMP_MISMATCH when the repriceRef has no sell price the platform can hold. One live hold per repriceRef: CONFLICT details.reason REPRICE_REF_HELD (details.field, ref, heldUntil) when another Idempotency-Key already holds the RP-, and REPRICE_REF_SPENT when it was booked; both are refused before the supplier is called. - 413ApiErrorResponse
VALIDATION — the request body is larger than the surface's limit.Show more
VALIDATION — the request body is larger than the surface's limit. Not retryable as sent: shrink the body. Declared on every operation that takes a request body. details carries exactly one key, maxBodyBytes (integer): the limit that applies to this surface, in bytes. - 414ApiErrorResponse
VALIDATION — the request URI (path and query string) is longer than 8 KiB; the public edge refuses it before the platform sees it (details.reason URI_TOO_LONG, details.source edge).Show more
VALIDATION — the request URI (path and query string) is longer than 8 KiB; the public edge refuses it before the platform sees it (details.reason URI_TOO_LONG, details.source edge). Not retryable as sent: send long input in the body of a POST. - 415ApiErrorResponse
VALIDATION — a request body that is not JSON (application/json or application/*+json; a form body only on the OAuth token routes).Show more
VALIDATION — a request body that is not JSON (application/json or application/*+json; a form body only on the OAuth token routes). The public edge refuses it before the platform sees it (details.reason UNSUPPORTED_MEDIA_TYPE, details.source edge). Not retryable as sent: send Content-Type application/json. Declared on every operation that takes a JSON request body. - 422SOLD_OUT or TRAVELER_MISMATCHApiErrorResponse
- 423ApiErrorResponse
PERMISSION_DENIED with details.reason KEY_PAUSED: the API key is PAUSED and every call with it is refused until an Owner or Admin resumes it (POST /v1/keys/{keyPrefix}:resume, a person only); or…Show more
PERMISSION_DENIED with details.reason KEY_PAUSED: the API key is PAUSED and every call with it is refused until an Owner or Admin resumes it (POST /v1/keys/{keyPrefix}:resume, a person only); or details.reason LOOP_DETECTED on the call whose loop paused the key (20 identical requests in 60 s, or 50 holds without a booking or release in 10 min; replays of one Idempotency-Key never count). Not retryable; nextAction stop — the agent stops using the key and tells the person; details carry resumeBy (owner), consoleLink and evidence (ApiKeyPauseEvidence). Nothing was charged, held or sent; holds and orders already made are untouched. A key whose ancestor (the key that minted it, or that key's minter) is PAUSED answers the same 423 KEY_PAUSED, and resuming the ancestor resumes it, so a child never outlasts a pause of its parent. The MCP plane answers the identical body as an isError result. Any key-authenticated route may answer it; it is declared on the order and hold writes, search, reprice and the key routes. - 429RATE_LIMITED on POST /v1/hold — the tenant quota (Retry-After set), or details.reason HOLD_CAP_REACHED when the tenant already has its maximum of live holds.ApiErrorResponse
- 500INTERNAL — a bug, and traceId is the support handle.ApiErrorResponse
- 501ApiErrorResponse
NOT_IMPLEMENTED — honest fallback; every production 501 is a capabilities-doc bug.Show more
NOT_IMPLEMENTED — honest fallback; every production 501 is a capabilities-doc bug. Also the order read routes (getOrder, listOrderDocuments, listOrderEvents, searchOrders) on a deployment with no order reader assembled; not retryable. - 502Also the order read routes (getOrder, listOrderDocuments, listOrderEvents, searchOrders) when the order store times out: details.store names the store, retryable true.ApiErrorResponse
- 503ApiErrorResponse
Errors you should handle
Branch on code and honour retryable — never on the HTTP status alone.
| 400 | VALIDATION message.intent.checkOut must be after message.intent.checkIn | not retryable |
| 400 | UNKNOWN_DOMAIN Unknown domain 'HOTELS'. Did you mean HTL? | not retryable |
| 401 | UNAUTHENTICATED The bearer token is expired. Re-authenticate and retry. | not retryable |
| 403 | PERMISSION_DENIED Role lacks the required scope: booking:write | not retryable |
| 403 | TAB_DISABLED Tenant acme-travel is not entitled to sell CRU | not retryable |
| 403 | OUT_OF_SCOPE The token's scope ladder does not reach this customer subtree | not retryable |
| 403 | TENANT_MISMATCH orderRef MO-8KD-2FQ-9XT does not belong to tenant acme-travel | not retryable |
| 403 | TENANT_SUSPENDED This tenant is suspended: new searches, quotes, holds, orders and payments are refused until it is reinstated. Existing orders can still be read, cancelled and amended. | not retryable |
| 404 | NOT_FOUND searchRef SR-F-7b31d0a9 is unknown or has expired; re-search | not retryable |
| 405 | VALIDATION This method is not served. | not retryable |
| 409 | CONFLICT The order is in a state that does not allow this transition | not retryable |
| 409 | OFFER_EXPIRED offerRef OF-H-8c1f4a2e expired at 2026-09-14T17:34:11Z; re-reprice | not retryable |
| 409 | HOLD_EXPIRED holdRef HD-M-4419ab expired at 2026-09-14T17:05:41Z; the seats were released | not retryable |
| 409 | IDEMPOTENCY_CONFLICT Idempotency-Key 7f0c33d1-9a1e-4d2c-9f77-1c0f2b3a4d55 was used with a different body; never executed | not retryable |
| 409 | QUOTE_EXPIRED The repriceRef has no sell price this platform can hold. Reprice again, then hold the new RP-. | not retryable |
| 413 | VALIDATION The request body is larger than this API accepts (262144 bytes). | not retryable |
| 414 | VALIDATION The request URI is longer than 8 KiB. | not retryable |
| 415 | VALIDATION Send application/json. | not retryable |
| 422 | SOLD_OUT The selected fare class is no longer available at the supplier | not retryable |
| 422 | TRAVELER_MISMATCH Supplier rejected traveler[0]: passport expiry precedes the return date | not retryable |
| 423 | PERMISSION_DENIED This API key is paused: 212 holds in 9 min. An Owner or Admin must resume it in the console. | not retryable |
| 429 | RATE_LIMITED Tenant quota exceeded. Retry after 2s | retryable |
| 500 | INTERNAL An unexpected error occurred. Quote the traceId to support. | retryable |
| 501 | NOT_IMPLEMENTED seatmap is NOT_APPLICABLE for HTL; GET /v1/capabilities says so | not retryable |
| 502 | UPSTREAM_UNAVAILABLE Every supplier for HTL is circuit-open; no fan-out was attempted | retryable |
| 503 | PROVIDER_DOWN EXAMPLEHOTELS is unavailable; the order was not attempted and nothing was captured | retryable |