Security & Testing
apidefects.com
Checks and reports known defects or issues with MCP servers and API operations before they are used.
ENDPOINT 1
https://apidefects.com/mcp
MCP server metadata
- Name
- errata
- Version
- errata-2026-09-10@269d44ac2d3f
One tool: check_defects. Give it the identity of an MCP server or an API operation you are about to use, and it says what is known to be wrong with it. Every record carries a check you can rerun; nothing here asks to be believed. `never_examined` means this registry has not looked, not that the thing works.
Known tools 1
check_defectsBefore using an MCP server or an API operation, ask what is known to be wrong with it.
Inferred read-onlyCONNECT WITH APPROVAL
Client installation
Review this server and its permissions before adding it. Secret placeholders must be set locally.
Codex
~/.codex/config.toml
[mcp_servers.errata]
url = "https://apidefects.com/mcp"
enabled = true
Claude Code
.mcp.json
{
"mcpServers": {
"errata": {
"type": "http",
"url": "https://apidefects.com/mcp"
}
}
}
Claude Desktop
Settings → Connectors → Add custom connector
Name: errata
Remote MCP URL: https://apidefects.com/mcp
Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.
Cursor
.cursor/mcp.json
{
"mcpServers": {
"errata": {
"url": "https://apidefects.com/mcp"
}
}
}
Visual Studio Code
.vscode/mcp.json
Add to Visual Studio Code{
"servers": {
"errata": {
"type": "http",
"url": "https://apidefects.com/mcp"
}
}
}
Generic MCP
Client-specific MCP configuration
{
"name": "errata",
"transport": "streamable-http",
"url": "https://apidefects.com/mcp"
}
MCP Inspector
Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.
TRUST AND VERIFICATION EVIDENCE
Loading Trust v2 evidence…
Checking the associated registrable domain. The BuiltWith key remains server-side.
Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.