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Filename Latest commit message Latest commit date
Robert Findley 3430e2242e
 mcp: add Capabilities fields to ServerOptions and ClientOptions (#713) 
This allows users to configure default capabilities, disable defaults,
or suppress listChanged notifications by setting ListChanged: false.

Key changes:
- Add ServerOptions.Capabilities and ClientOptions.Capabilities fields.
- Merge user-provided capabilities with dynamically-added ones (tools,
  prompts, resources, sampling, elicitation).
- Check ListChanged before sending list-changed notifications.
- Deprecate HasPrompts, HasResources, HasTools on ServerOptions.
- Remove unreleased ElicitationModes field from ClientOptions.
- Add clone methods to capability structs using shallowClone helper.
- Add synctest-based tests for notification behavior (go1.25).
- Add TestClientCapabilitiesOverWire and TestServerCapabilitiesOverWire
- Document the new Capabilities API in docs/

Updates #706
2025-12-11 20:17:46 -05:00
..
client.md mcp: add Capabilities fields to ServerOptions and ClientOptions (#713) 2025-12-11 20:17:46 -05:00
protocol.md internal/docs: document UserID for session hijacking prevention (#697) 2025-12-08 15:25:34 -05:00
README.md docs: document known rough edges (#609) 2025-10-29 10:57:45 -04:00
rough_edges.md mcp: add Capabilities fields to ServerOptions and ClientOptions (#713) 2025-12-11 20:17:46 -05:00
server.md mcp: add Capabilities fields to ServerOptions and ClientOptions (#713) 2025-12-11 20:17:46 -05:00
troubleshooting.md mcp: fix broken client root capabilities (#698) 2025-12-11 10:16:56 -05:00

README.md

Features

These docs mirror the official MCP spec. Use the index below to learn how the SDK implements a particular aspect of the protocol.

Base Protocol

  1. Lifecycle (Clients, Servers, and Sessions).
  2. Transports
    1. Stdio transport
    2. Streamable transport
    3. Custom transports
  3. Authorization
  4. Security
  5. Utilities
    1. Cancellation
    2. Ping
    3. Progress

Client Features

  1. Roots
  2. Sampling
  3. Elicitation

Server Features

  1. Prompts
  2. Resources
  3. Tools
  4. Utilities
    1. Completion
    2. Logging
    3. Pagination

TroubleShooting

See troubleshooting.md for a troubleshooting guide.

Rough edges

See rough_edges.md for a list of rough edges or API oversights that can't be addressed due to our compatibility promise. We'll revisit these if/when we move to a v2 of the SDK.