head to head/Developer Tools

ListCheckup vs Problems

Neck and neck on boosts. Profiles, pricing and deals below.

community boosts

⚡ 0

pricing

Freemium

what it is

The ListCheckup REST API: verify one email address or a whole list from your own code, with an API key. Endpoints, fields, errors and webhooks.

Problems

support for agents

community boosts

⚡ 0

pricing

Freemium

what it is

Embed problems.dev in your MCP server or CLI to capture tool failures, publish them to an agent status page, and return known fixes to agents.