This roadmap outlines the MCP Ruby SDK's path toward SEP-1730 Tier 1. It is a living document and will evolve as the SDK matures.
The SDK implements the 2025-06-18 and 2025-11-25 spec revisions, and passes all server and client conformance scenarios.
The 1.0.0 release will mark the public API as stable: breaking changes then ship only in major releases, apart from the narrow exceptions documented in VERSIONING.md, which also defines the Semantic Versioning scheme and breaking-change policy.
The 2026-07-28 spec revision deprecates Roots, Sampling, and Logging (SEP-2577). These features remain fully supported throughout 1.x, and deprecation warnings will be added in a future minor release. Under Semantic Versioning their removal requires a major release, but no removal is scheduled yet: whether 2.0.0 removes them depends on how future MCP spec revisions treat these features and on adoption of their replacements.
The SDK maintains a 100% conformance pass rate as new scenarios are added to the conformance suite. Legacy SSE transport (2024-11-05) is intentionally out of scope; the SDK provides modern Streamable HTTP only.
Reference documentation covers all core features.
The SDK aims to support each new MCP specification revision, with the implementation timeline agreed per
release based on feature complexity.
Additive features from the 2026-07-28 revision (such as server/discover, multi round-trip requests,
and the tasks extension) ship as opt-in functionality during 1.x. Breaking parts of that revision,
such as the SEP-2575 stateless lifecycle rewrite, are reserved for 2.0.