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Extend resolver DI to sampling and roots requests (#3049)

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Max 2026-07-06 18:25:57 +01:00 • committed by GitHub
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docs/client/callbacks.md
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@ -78,6 +78,8 @@ When a client connects it declares its `capabilities`, the mirror image of the s
| `list_roots_callback=` | `"roots": {"listChanged": true}` |
| none of them | `{}` |
Sampling sub-capabilities are the one refinement: pass `sampling_capabilities=SamplingCapability(tools=SamplingToolsCapability())` alongside `sampling_callback` when your sampler handles the `tools` / `tool_choice` parameters. Servers must see `sampling.tools` declared before they can send them.
`logging_callback` and `message_handler` are not in the table. They handle notifications, and notifications need no capability.
The server reads the declaration back with `ctx.session.check_client_capability(...)`. Add a tool that does: