Changelog

All notable changes to the Raku MCP SDK are documented in this file.

[0.28.0] - 2026-01-29

Added

• Icons and title metadata on Tool, Resource, Prompt, ResourceTemplate, and Implementation (SEP-973)
• Expanded test coverage for progress tracking, error edge cases, and concurrent operations
• IconDefinition type with src, mimeType, and sizes fields
• .title() and .icon() builder methods on all primitive builders

Changed

• Gap analysis and status docs updated to reflect full specification coverage

[0.27.0] - 2026-01-28

Added

• Legacy SSE transport for backwards compatibility with MCP spec 2024-11-05
• Enterprise IdP policy controls (SEP-990)
• OAuth client credentials for machine-to-machine authentication (SEP-1046)
• Dynamic client registration for OAuth

Changed

• Documentation cleanup: corrected completeness claims, added SSE references

[0.26.0] - 2025-12-15

Added

• Progress token support with $*MCP-PROGRESS-TOKEN dynamic variable
• Client-side progress Supply for typed Progress objects
• Logging level setting via logging/setLevel and client set-log-level
• Protocol version negotiation across 2024-11-05, 2025-03-26, and 2025-11-25

[0.25.0] - 2025-12-01

Added

• Tool name validation per SEP-986 (1-64 chars, [a-zA-Z0-9_-])
• Resource templates with URI template pattern matching and builder API
• Prompt and resource list-changed notifications

[0.24.0] - 2025-11-15

Added

• Extensions framework with capability negotiation and method dispatch
• Extension registration, experimental capabilities advertising

[0.23.0] - 2025-11-01

Added

• Sampling with tools (SEP-1577): tools, toolChoice, includeContext in createMessage
• Tasks framework for long-running async tool execution with status polling and cancellation

[0.22.0] - 2025-10-15

Added

• OAuth 2.1 authorization: PKCE, token management, server validation, metadata discovery

[0.21.0] - 2025-10-01

Added

• Tool output schemas with outputSchema and structuredContent for structured results
• Completion/autocomplete support with prompt and resource completers
• Elicitation support (form and URL modes) with handler callbacks

[0.20.0] - 2025-09-15

Added

• Streamable HTTP transport with session management, SSE streaming, and resumption
• Roots support: client roots configuration, server list-roots, set-roots
• Resource subscriptions: subscribe, unsubscribe, update notifications

[0.19.0] - 2025-09-01

Added

• Request cancellation with notifications/cancelled
• Pagination support for all list endpoints (tools, resources, prompts)
• Tool and resource annotations with builder API

Changed

• Updated to MCP protocol version 2025-11-25

[0.1.0] - 2025-07-01

Added

• Initial implementation
• JSON-RPC 2.0 message handling
• Stdio transport
• Tools, Resources, Prompts with builder API
• Server and Client initialization
• MCP protocol types and capabilities