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Model Context Protocol, a Series of LF Projects, LLC (originated by Anthropic) · Agent frameworks & orchestration

Open JSON-RPC standard for connecting AI applications to tools, data and prompts through servers, now stewarded under the Linux Foundation with SDKs in many languages

Open sourceOpen sourceFreeLocalSelf-hostedNov 2, 2026

OpenAPI Specification

OpenAPI Initiative (Linux Foundation) · API development & tooling

Vendor-neutral, machine-readable standard for describing HTTP APIs in JSON or YAML, maintained by the OpenAPI Initiative under the Linux Foundation

Apache-2.0Open sourceFreeLocalNov 2, 2026

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Model Context Protocol

OpenAPI Specification