json237 B

Matrix client discovery (m.homeserver)

The client-side twin of the Matrix delegation pair: homeserver and identity server base URLs plus an unregistered vendor key, which clients must carry through rather than reject. For testing discovery and unknown-member tolerance.

Web assets JSON parsing Config parsing

Preview — first 12 linesjson

{
  "m.homeserver": {
    "base_url": "https://matrix.example.com"
  },
  "m.identity_server": {
    "base_url": "https://identity.example.com"
  },
  "org.example.custom.property": {
    "note": "SAMPLE - unregistered vendor key"
  }
}

Specifications

Seed: 70400
Site: example.com (fictional)
Format: Matrix client discovery
Members: 3
Vendor Keys: 1
Location: /.well-known/matrix/client

Testing contract

Expected to pass

Scenario: Point a client at example.com and let it auto-discover its homeserver.
Expected result: The client connects to https://matrix.example.com, records the identity server, and preserves org.example.custom.property instead of failing on the unrecognised member.

What is a .json file?

JSON (JavaScript Object Notation) is a lightweight, text-based data-interchange format representing objects, arrays, strings, numbers, booleans, and null. It is language-independent, human-readable, and the dominant format for web APIs and configuration. It requires a single well-formed root value.

How to use this file

Use an example JSON file to test parsers and serializers, schema validation, Unicode and number-precision handling, and API request or response processing.

How to use this file for testing

“Matrix client discovery (m.homeserver)” is a deterministic Novus Examples fixture for Web assets, JSON parsing, Config parsing. Favicons, web app manifests, service workers, robots and sitemap files, Open Graph images, and .well-known resources — for testing web tooling, crawlers, PWA installers, and asset pipelines.

Documented properties for this file: seed 70400 · Matrix client discovery. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.

Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.

Web-platform fixtures are standards-compliant samples against fictional example.com data. Test crawlers, PWA installers and manifest validators, favicon/icon pipelines, service-worker registration, or .well-known parsers against the documented structure.

Code examples

import json

with open("matrix-client.json") as f:
    data = json.load(f)
print(type(data), len(data))

Generated by generation/web_p7.py. Free for any use, no attribution required — license.