HM Land Registry Attach a message API
The Attach a message API from HM Land Registry — 1 operation(s) for attach a message.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/hm-land-registry-attach-a-message-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
OpenAPI Specification
openapi: 3.2.0
info:
description: V1.0 of the set of APIs for the new 'Submit an application to change the Land Register API' Schema
title: V1.0 'Submit an application to change the Land Register API' Schema Attach a message API
version: 1.0.5
servers:
- url: https://businessgateway.landregistry.gov.uk/bg2/api
description: Production
- url: https://bgtest.landregistry.gov.uk/bg2test/api
description: Stub
security:
- basicAuth: []
tags:
- name: Attach a message
paths:
/v1/applications/{application_request_id}/messages:
post:
summary: Attach a message to an existing application
description: Application information API - Get the information about an application
operationId: attach_a_message_v1
parameters:
- description: The ID returned by Application Creation to track submission requests
in: path
name: application_request_id
example: 12345678-1234-1234-1234-123546789abc
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
$ref: '#/components/schemas/AttachAMessageRequest'
required: true
responses:
'202':
description: Accepted
'400':
content:
'*/*':
schema:
$ref: '#/components/schemas/ErrorResponse'
description: Bad Request
'401':
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
description: Unauthorised - an access token is required
'404':
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
description: Application creation request not found in the system
'500':
description: Internal Server Error
tags:
- Attach a message
components:
schemas:
AttachAMessageRequest:
required:
- data
type: object
description: The request to send to the endpoint to request an upload URL
properties:
data:
properties:
message_text:
type: string
description: The content of the message to be attached
maxLength: 4034
minLength: 0
required:
- message_text
ProblemDetails:
required:
- detail
- type
description: Detailed information about an error
type: object
properties:
type:
type: string
description: The type of error received
example: L2_MDREF_ERROR
detail:
type: string
description: A longer description about the type of error received
example: The MDref included in the request does not exist
pointer:
type: string
description: A JSON pointer to the location in the JSON payload that caused the error (optional)
example: /data/transaction/t1/mdref
ErrorResponse:
type: object
description: Wrapper for any error responses
properties:
type:
type: string
format: uri
example: https://landregistry.github.io/bgtechdoc/problems/global#bad-request
title:
type: string
example: Bad Request
status:
type: integer
format: int32
example: 400
detail:
type: string
example: The request is invalid or malformed.
instance:
type: string
format: uri
code:
type: string
example: ignore me
errors:
type: array
description: A list of all errors generated
items:
$ref: '#/components/schemas/ProblemDetails'
securitySchemes:
basicAuth:
scheme: basic
type: http