Assistant · Vendor site 2026-10-04
The MCP PHP SDK is the official PHP library for Model Context Protocol servers and clients, maintained by the PHP Foundation and Symfony project. It lets developers expose tools, resources, and prompts to MCP hosts over STDIO or Streamable HTTP transports.
PHP developers integrating LLM applications with MCP-compatible hosts and agents.
Requires PHP 8.1+ and optional PSR packages for HTTP server or client setups per the installation guide.
The SDK separates context provision from LLM interaction by standardizing tools, resources, and prompts for PHP applications speaking MCP over common transports.
What it can do
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Server and client | Docs describe building MCP servers that expose tools, resources, and prompts plus MCP clients that connect to servers. | Facts sourced | 2026-10-04 |
| Transports | Supports STDIO and Streamable HTTP transports per the overview. | Facts sourced | 2026-10-04 |
| Attributes | Example server uses McpTool and McpResource attributes for discovery-based registration. | Facts sourced | 2026-10-04 |
Understand the total cost
Free
Free
Open-source SDK installed via Composer (composer require mcp/sdk); marked experimental until 1.0 on the docs site.
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The MCP PHP SDK is the official PHP library for Model Context Protocol servers and clients, maintained by the PHP Foundation and Symfony project. It lets developers expose tools, resources, and prompts to MCP hosts over STDIO or Streamable HTTP transports.
Open-source SDK installed via Composer (composer require mcp/sdk); marked experimental until 1.0 on the docs site.. This record lists ongoing free access; check the plan limits before starting.
No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.
Documentation covers building MCP servers and clients, transports, authorization, and protocol extensions.. API access and subscription access may have different terms; consult the linked sources.
Requires PHP 8.1+ and optional PSR packages for HTTP server or client setups per the installation guide.
No retained pricing changes yet. A current price alone does not establish a historical trend.
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