> ## Documentation Index > Fetch the complete documentation index at: https://docs.lmrp.uk/llms.txt > Use this file to discover all available pages before exploring further. # Transfer a vehicle to another character > **Permission:** `civilians.manage_own`. The caller must own both characters, or hold `civilians.manage`. **Access:** Browser session only. Ends the current keeper period and starts a new one, so the vehicle keeps its keeper history. The new keeper must be an active character. ## OpenAPI ````yaml /api-reference/openapi.json post /civilians/{id}/vehicles/{vehicleId}/transfer openapi: 3.1.0 info: title: Argus API version: 0.1.0 summary: The HTTP API behind the Argus web application. description: >- Argus is the operations platform for the UK London Mayfair ER:LC community. This document describes the API its own web application uses. **This is an internal application API.** It is not a stable public API: paths, fields and behaviour can change with any release, there is no versioning, and browser requests are tied to the application's own origin. Scoped service credentials exist for the community's own integrations. All paths are relative to `/api` on the deployment's origin. Responses are JSON, never cacheable, and carry an `X-Request-Id` header. servers: - url: http://localhost:3000/api description: Local development - url: '{origin}/api' description: A deployment. `origin` is that deployment's `APP_URL`. variables: origin: default: https://argus.example.org description: The application's public origin, with no trailing slash. security: [] tags: - name: Authentication description: >- Discord sign-in, Roblox account linking, the current user, and temporary Developer Access. - name: CAD Incidents description: >- Control's incidents: creation, editing, closure, and dispatching units to them. - name: CAD Units description: Control's view of operational units and their crew. - name: CAD Calls description: Incoming calls and how they become, or join, incidents. - name: CAD Events description: The append-only operational history. - name: MDT description: >- Self-service for the people crewing a unit: booking on and off, joining a unit, and changing its status. - name: Civilians description: 'The civilian portal: a member''s own characters, licences and vehicles.' - name: PNC Lookup description: >- Searching people and vehicles, full records, record history and official vehicle status. - name: PNC Licences description: Official changes to driving licences. - name: PNC Records description: Official records attached to people. - name: PNC Warrants description: Warrants and their lifecycle. - name: PNC Markers description: Markers and BOLOs on people and vehicles. - name: Staff description: Staff profiles and role membership. - name: Shifts description: Staff shifts. - name: Sessions description: Operational roleplay sessions. - name: Moderation description: Warnings, kicks and bans, with their delivery state. - name: Audit description: The append-only audit log. - name: Administration description: Accounts, roles and service credentials. - name: ERLC x-displayName: ER:LC description: Live data from the ER:LC private server. paths: /civilians/{id}/vehicles/{vehicleId}/transfer: post: tags: - Civilians summary: Transfer a vehicle to another character description: >- **Permission:** `civilians.manage_own`. The caller must own both characters, or hold `civilians.manage`. **Access:** Browser session only. Ends the current keeper period and starts a new one, so the vehicle keeps its keeper history. The new keeper must be an active character. operationId: transferVehicle parameters: - name: id in: path required: true schema: $ref: '#/components/schemas/Id' description: Civilian ID of the current keeper. - name: vehicleId in: path required: true schema: $ref: '#/components/schemas/Id' description: Vehicle ID. requestBody: required: true content: application/json: schema: type: object properties: toCivilianId: $ref: '#/components/schemas/Id' required: - toCivilianId additionalProperties: false example: toCivilianId: cmg6a1civ000gl508civ00002 responses: '200': description: Success. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: type: object properties: data: $ref: '#/components/schemas/OwnedVehicle' required: - data example: data: id: cmg6a4veh000jl508veh00001 plate: LK21ABC make: BMW model: 3 Series colour: Black type: CAR registrationStatus: REGISTERED insuranceStatus: INSURED motStatus: VALID taxStatus: TAXED createdAt: '2026-10-06T19:30:00.000Z' updatedAt: '2026-10-06T19:30:00.000Z' keeperSince: '2026-10-06T19:42:10.000Z' '400': description: |- `INVALID_TRANSFER`: the vehicle is already kept by that character. `INVALID_INPUT`: malformed body. `INVALID_JSON`: the body is missing or is not valid JSON. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: INVALID_TRANSFER message: The vehicle is already kept by this character. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '401': $ref: '#/components/responses/Unauthenticated' '403': description: >- `FORBIDDEN`: the caller does not own both characters. `USER_REQUIRED`: the caller is a service credential. `INVALID_ORIGIN`: a browser request whose `Origin` is not the application's own. `ACCOUNT_DISABLED`: the account is suspended or disabled. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: FORBIDDEN message: 'Permission required: civilians.manage_own.' requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '404': description: >- `NOT_FOUND`: no such character, or the source does not keep this vehicle. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: NOT_FOUND message: Character not found. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '409': description: |- `CIVILIAN_INACTIVE`: the new keeper is not active. `VEHICLE_LIMIT`: the new keeper already keeps 20 vehicles. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: CIVILIAN_INACTIVE message: Only an active character can do this. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '429': $ref: '#/components/responses/RateLimited' default: $ref: '#/components/responses/UnexpectedError' security: - sessionCookie: [] components: schemas: Id: type: string minLength: 1 maxLength: 64 pattern: ^[a-zA-Z0-9_-]+$ description: Argus record identifier. OwnedVehicle: allOf: - $ref: '#/components/schemas/Vehicle' - type: object properties: keeperSince: type: string format: date-time required: - keeperSince Error: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable code. message: type: string details: description: >- Present on some errors. Validation failures carry an array of `{path, message}`; ER:LC failures carry `{availability: "unavailable"}`. required: - code - message requestId: type: string format: uuid description: >- Also sent as the `X-Request-Id` header. Quote it when reporting a problem. required: - error - requestId Vehicle: type: object properties: id: $ref: '#/components/schemas/Id' plate: type: string pattern: ^[A-Z0-9]{2,8}$ description: Registration, stored in capitals without spaces or hyphens. make: type: string model: type: string colour: type: string type: type: string enum: - CAR - MOTORCYCLE - VAN - LORRY - BUS - OTHER registrationStatus: type: string enum: - REGISTERED - SUSPENDED - SCRAPPED insuranceStatus: type: string enum: - INSURED - UNINSURED motStatus: type: string enum: - VALID - EXPIRED taxStatus: type: string enum: - TAXED - UNTAXED - SORN createdAt: type: string format: date-time updatedAt: type: string format: date-time required: - id - plate - make - model - colour - type - registrationStatus - insuranceStatus - motStatus - taxStatus - createdAt - updatedAt headers: RequestId: schema: type: string format: uuid description: Identifies this request in server logs. RetryAfter: schema: type: integer minimum: 1 description: Seconds to wait before trying again. responses: Unauthenticated: description: >- `UNAUTHENTICATED`: no session cookie, or an invalid, expired or revoked service credential. `SESSION_EXPIRED`: the session has ended. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: UNAUTHENTICATED message: Sign in to continue. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 RateLimited: description: >- `RATE_LIMITED`: more than 180 reads or 60 writes in a minute for this caller. headers: X-Request-Id: $ref: '#/components/headers/RequestId' Retry-After: $ref: '#/components/headers/RetryAfter' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: RATE_LIMITED message: Too many requests. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 UnexpectedError: description: >- Any other failure, in the same error envelope: `INTERNAL_ERROR` (500), `METHOD_NOT_ALLOWED` (405), `BODY_TOO_LARGE` (413, over 16 KiB) or `UNSUPPORTED_MEDIA_TYPE` (415, body not sent as `application/json`). headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: INTERNAL_ERROR message: The request could not be completed. requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 securitySchemes: sessionCookie: type: apiKey in: cookie name: __Host-argus-session description: >- The opaque session cookie set by Discord sign-in. Named `argus-session` outside production. HttpOnly, so scripts cannot read it; same-origin requests send it automatically. Requests other than GET must also carry an `Origin` header equal to the application's own origin. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.