> ## 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. # Clear a marker > **Permission:** `pnc.markers.manage`. Needs a signed-in user; service credentials are refused with `USER_REQUIRED`. **Access:** Browser session only. Marks the marker as cleared with who and why. It stays in the history. ## OpenAPI ````yaml /api-reference/openapi.json post /pnc/markers/{id}/clear 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: /pnc/markers/{id}/clear: post: tags: - PNC Markers summary: Clear a marker description: >- **Permission:** `pnc.markers.manage`. Needs a signed-in user; service credentials are refused with `USER_REQUIRED`. **Access:** Browser session only. Marks the marker as cleared with who and why. It stays in the history. operationId: clearMarker parameters: - name: id in: path required: true schema: $ref: '#/components/schemas/Id' description: Marker ID. requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ReasonInput' example: reason: Vehicle recovered responses: '200': description: Success. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: type: object properties: data: $ref: '#/components/schemas/Marker' required: - data example: data: id: cmg6a7mrk000pl508mrk00002 reference: MRK-000013 type: STOLEN_VEHICLE civilian: null vehicle: id: cmg6a4veh000jl508veh00001 plate: LK21ABC make: BMW model: 3 Series colour: Black reason: Reported stolen from Berkeley Square details: null issuedBy: id: cmg5x1k2a0000l508a1b2c3d4 displayName: Olivia Officer createdAt: '2026-10-06T19:30:00.000Z' expiresAt: null active: false clearedAt: '2026-10-06T19:42:10.000Z' clearedBy: id: cmg5x1k2a0000l508a1b2c3d4 displayName: Olivia Officer clearReason: Vehicle recovered '400': description: >- `INVALID_INPUT`: a parameter or body field fails validation; `details` lists each problem. `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_INPUT message: Request validation failed. details: - path: - reason message: Invalid input requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '401': $ref: '#/components/responses/Unauthenticated' '403': description: >- `FORBIDDEN`: the caller lacks `pnc.markers.manage`. `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: pnc.markers.manage.' requestId: 3f1c9d5e-7a42-4f0b-9c1e-8b6d2a4e5f70 '409': description: >- `MARKER_NOT_ACTIVE`: the marker does not exist or was already cleared. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: MARKER_NOT_ACTIVE message: The marker does not exist or was already cleared. 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. ReasonInput: type: object properties: reason: type: string minLength: 3 maxLength: 500 required: - reason additionalProperties: false Marker: type: object properties: id: $ref: '#/components/schemas/Id' reference: type: string pattern: ^MRK-[0-9]{6,}$ type: type: string enum: - PERSON_BOLO - VEHICLE_BOLO - WANTED - MISSING_PERSON - OFFICER_SAFETY - STOLEN_VEHICLE - GENERAL civilian: anyOf: - $ref: '#/components/schemas/CivilianRef' - type: 'null' vehicle: anyOf: - $ref: '#/components/schemas/VehicleRef' - type: 'null' reason: type: string details: type: - string - 'null' issuedBy: $ref: '#/components/schemas/Person' createdAt: type: string format: date-time expiresAt: type: - string - 'null' format: date-time active: type: boolean description: False once cleared or past `expiresAt`. clearedAt: type: - string - 'null' format: date-time clearedBy: anyOf: - $ref: '#/components/schemas/Person' - type: 'null' clearReason: type: - string - 'null' required: - id - reference - type - civilian - vehicle - reason - details - issuedBy - createdAt - expiresAt - active - clearedAt - clearedBy - clearReason 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 CivilianRef: type: object properties: id: $ref: '#/components/schemas/Id' reference: type: string fullName: type: string required: - id - reference - fullName VehicleRef: type: object properties: id: $ref: '#/components/schemas/Id' plate: type: string make: type: string model: type: string colour: type: string required: - id - plate - make - model - colour Person: type: object properties: id: $ref: '#/components/schemas/Id' displayName: type: string required: - id - displayName description: A minimal reference to an Argus user. 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.