What is known to be broken in an MCP server or API operation, with the check that found it.
Connect Remote server
claude mcp add --transport http errata https://apidefects.com/mcp
{
"mcpServers": {
"errata": {
"url": "https://apidefects.com/mcp"
}
}
}
{
"servers": {
"errata": {
"type": "http",
"url": "https://apidefects.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://apidefects.com/mcp
Tools 1 found in our last check
check_defectsBefore using an MCP server or an API operation, ask what is known to be wrong with it. Takes one identity: an MCP registry entry (io.github.owner/repo), a deployment URL, an OpenAPI document URL, or a host. Answers one of three things, and they are three rather than two: `defect…
Details
| Endpoint | https://apidefects.com/mcp (Streamable HTTP) |
| First published | 17 Sep 2026 |
| Last updated | 17 Sep 2026 |
| Registry name | com.apidefects/errata |
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