Preview Update guest profile (dry-run)
const url = 'https://api.aerandil.com/v1/actions/hospitality.action.update_guest_profile/preview';const options = { method: 'POST', headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'}, body: '{"branch":"2489E9AD-2EE2-8E00-8EC9-32D5F69181C0","params":{"address":{"city":"example","country":"example","line1":"example","line2":"example","postal_code":"example","region":"example"},"connecting_room_ok":true,"date_of_birth":"2026-04-15","dietary":["example"],"email":"example","family_name":"example","given_name":"example","language":"example","nationality":"example","phone":"example","pillow":"example","quiet_room":true,"room_floor_preference":"low","tax_identifier":"example"},"return_modified":false,"target":{"id":"2489E9AD-2EE2-8E00-8EC9-32D5F69181C0","object_type":"hospitality.person"}}'};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}curl --request POST \ --url https://api.aerandil.com/v1/actions/hospitality.action.update_guest_profile/preview \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "branch": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "params": { "address": { "city": "example", "country": "example", "line1": "example", "line2": "example", "postal_code": "example", "region": "example" }, "connecting_room_ok": true, "date_of_birth": "2026-04-15", "dietary": [ "example" ], "email": "example", "family_name": "example", "given_name": "example", "language": "example", "nationality": "example", "phone": "example", "pillow": "example", "quiet_room": true, "room_floor_preference": "low", "tax_identifier": "example" }, "return_modified": false, "target": { "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "object_type": "hospitality.person" } }'Scenario preview of apply_hospitality_action_update_guest_profile — runs the action exactly as apply would (validation, handler dispatch, modified-object projection, commit-time cross-link validation) then rolls the transaction back. Returns the modified_objects / modified_links / warnings the apply would have produced without persisting anything or firing any outward effect. Requires the same actions:hospitality.action.update_guest_profile:apply scope as apply. No Idempotency-Key.
Authorizations
Section titled “Authorizations”Request Bodyrequired
Section titled “Request Bodyrequired”object
Apply against an open branch’s overlay view instead of the canonical (main) plane. The action’s writes land in the branch’s copy-on-first-write overlay, its events in the branch’s own stream, and the invocation is journaled for merge-by-replay. Branch writes are action-only, so this is the write-side entry point to a branch (POST /v1/branches forks one).
object
object
When true, the response carries modified_objects and modified_links projections — the engine reads the event log inside the same transaction so the projection observes the handler’s own writes.
object
Responses
Section titled “Responses”Preview computed and rolled back. modified_objects and modified_links carry the effect set the apply would produce; preview is always true.
Envelope returned by the Aerandil action engine. correlation_id ties every event emitted by this invocation; modified_objects and modified_links project the events the handler emitted (per the action’s declared effects); warnings carries any non-blocking soft-validator observations.
object
Per-invocation correlation id; matches events.correlation_id for every event this action appended.
Links established or removed by this invocation. Empty when the caller did not request return_modified.
object
Objects created, modified, or soft-deleted by this invocation. Empty when the caller did not request return_modified.
object
Non-blocking soft-validator observations emitted during this invocation (e.g. comp-authority over-limit, recipe pour-cost over sell-price). Absent when no warnings were emitted.
object
Human-readable summary, suitable for logging or operator-UI surfacing.
Object type the warning was raised against.
Property the warning anchors to, when a single field is the locus. Absent for multi-field rules.
Stable kebab-case rule identifier (e.g. comp-authority-over-limit).
Example
{ "modified_links": [ { "kind": "linked" } ], "modified_objects": [ { "kind": "modified", "object_type": "hospitality.person" } ]}Headers
Section titled “Headers”Always no-store — uncommitted live data.
Conflict — concurrent modification or unique constraint violation the apply would hit.
Validation error — the apply would be rejected.