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Vendor vielhuber Package simplemcp Short Description Simple php mcp server with auto-discovery and totp auth. License
MIT
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simplemcp is a simple php mcp server. it auto-discovers tool classes via reflection, loads them from a directory you point it at, and authenticates requests via a static bearer token or rotating totp codes (rfc 6238).
installation
configuration
authentication
static mode
totp mode
MCP_TOKEN is a base32-encoded shared secret (rfc 6238). the bearer is a fresh 6-digit totp code (30-second window, ±1 step tolerance). the server implements the algorithm natively, no extra library needed. on the client (python/fastmcp):
usage
configure the constructor at the bottom of mcp-server.php:
adding tools
note: simplemcp uses the same #[McpTool] and #[Schema] attribute syntax as php-mcp/server. existing tool classes can be migrated by replacing use PhpMcp\Server\Attributes\McpTool; with use vielhuber\simplemcp\Attributes\McpTool; (and the same for Schema).
note: throw \RuntimeException (or any \Throwable) to signal errors. simplemcp catches these automatically and returns them as a structured mcp error response with isError: true and the exception message as text. this is the recommended pattern for invalid input or missing resources — do not return null or false.
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