User Agent Info

Features

• User-Agent lookup via Web UI and API
• Release date and version-specific usage stats from caniuse-lite
• Usage / popularity stats for browsers from statscounter

Future Ideas

• List N most recently queried User-Agents
• Specify your browserslist string to check whether a given User-Agent is covered
• Include additional datasets for usage and popularity (e.g., useragents.me)

API Usage

Specify a User-Agent header or ?ua query parameter to fetch agent details via JSON. See the Agent type for schema details.

# `User-Agent` header
curl -H 'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.3' https://user-agent.info/api/v1/agents

# `ua` query parameter
curl 'https://user-agent.info/api/v1/agents?ua=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.3'

Local Development

git clone https://github.com/nonrational/user-agent.info
cd user-agent.info/
asdf install
deno task start

Common tasks are also available via just. See just --list if you have just installed.

Deployment

Deno Deploy managed by deployctl via GitHub Actions. See ci.yml.

To deploy manually, set DENO_DEPLOY_TOKEN in your environment and run just deploy-preview.