| Filename | Latest commit message | Latest commit date |
|---|---|---|
bdc9d86671* [Client][Server] Add Roots support Wire up the MCP "roots" capability on both sides: Client (php-sdk as client): - RootsCallbackInterface + ListRootsRequestHandler answer server roots/list requests, mirroring the Sampling handler. - Client::sendRootsListChanged() emits notifications/roots/list_changed. Server (php-sdk as server): - ClientGateway::listRoots() requests the client's roots, and supportsRoots() reports whether the client advertised the capability, normalizing the stored capabilities to an array so an empty capabilities object (\stdClass) doesn't cause a TypeError. - Add ListRootsResult::fromArray() (used by listRoots()). - ListRootsRequestHandler forwards RootsException messages to the server (new Mcp\Exception\RootsException), mirroring SamplingRequestHandler. - Client::sendRootsListChanged() throws when the client did not advertise the roots.listChanged capability. Examples, docs and tests: - examples/README/docs advertise `new ClientCapabilities(roots: true, rootsListChanged: true)` before sending notifications/roots/list_changed. - CHANGELOG entry for Roots (unreleased 0.7.0 section at the time). - Unit tests for capability serialization/round-trip, sendRootsListChanged gating, and RootsException message forwarding. phpunit, php-cs-fixer and phpstan green. * [Client][Server] Address review: schema validation, changelog section, connection guard, working example Responds to chr-hertel's review of the Roots support: - ListRootsResult::fromArray() rejects non-array root elements instead of accepting malformed entries silently. - CHANGELOG entry moved to the next unreleased section as the release train advanced past it (0.7.0 -> 0.8.0). - Client::sendRootsListChanged() went straight to Protocol::sendNotification(), which sends via `$this->transport?->send()` -- on a client that is not connected the notification was silently dropped. It now throws a ConnectionException like sendRequest() does. - The stdio example only advertised the roots capability, so the roots/list handler never actually ran. The client-communication demo server gets an `inspect_workspace_roots` tool that calls ClientGateway::supportsRoots()/listRoots(); the example calls it, so the server actually issues roots/list and the client answers it. Dropped the try/catch wrapper from the example. - ClientTest's connected-client mock now goes through setState() so isConnected() reflects a real handshake instead of a stubbed flag. phpunit, php-cs-fixer and phpstan green. |
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| .. | ||
| http_client_communication.php | ||
| http_discovery_calculator.php | ||
| README.md | ||
| stdio_client_communication.php | ||
| stdio_discovery_calculator.php | ||
| stdio_elicitation.php | ||
| stdio_roots.php | ||
Client Examples
These examples demonstrate how to use the MCP PHP Client SDK.
STDIO Client
Connects to an MCP server running as a child process:
php examples/client/stdio_discovery_calculator.php
HTTP Client
Connects to an MCP server over HTTP:
# First, start an HTTP server
php -S localhost:8000 examples/server/discovery-calculator/server.php
# Then run the client
php examples/client/http_discovery_calculator.php
Requirements
All examples require the server examples to be available. The STDIO examples spawn the server process, while the HTTP examples connect to a running HTTP server.