Libraries tagged by protocol

PSR for standardized socket usage

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PSR package containing some interface for HTTP messaging while PSR-7 is in proposal state

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A2A (AI Agent-to-Agent) Protocol PHP SDK

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FastCGI protocol, client and server interfaces and implementations

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Google Analytics (Measurement Protocol)

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A library that makes posting to Bluesky from PHP simple.

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B2B tools for the official Sylius MCP server: signed-in buyers use Claude or ChatGPT to list and reorder their orders, quick order by SKU, request quotes and read their trade credit statement (OAuth 2.1 with PKCE, checkout handoff to the shop)

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The PHP client library for Interledger. Integrates with ILP SPSP Invoice Server allowing to create and get invoices.

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Sylius Admin MCP Server Plugin — exposes Sylius Admin API as an MCP server with OAuth 2.0 PKCE authentication.

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MCP server for self-hosted Sentry (Go, distributed as a prebuilt binary)

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MCP server for Jenkins build status and logs (Go, distributed as a prebuilt binary)

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DataStore MCP — one MCP server for MySQL/MariaDB, PostgreSQL, SQLite, DuckDB, SQL Server, ClickHouse, MongoDB, Redis/Valkey, Elasticsearch/OpenSearch and Qdrant (Rust, distributed as a prebuilt binary)

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MCP server for self-hosted Jira and Bitbucket (Go, distributed as a prebuilt binary)

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Charge AI agents per request from any Laravel route using the Machine Payments Protocol (MPP), settling over Stripe Shared Payment Tokens or Tempo on-chain stablecoins. Tag routes via middleware or a #[RequiresPayment] attribute.

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Type-safe AT Protocol HTTP client with OAuth 2.0 support for Laravel

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