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fix(capabilities): do not serialize None as null for list_changed (#341)

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The old form violates the spec, and all other `Option<bool>` fields also
behave this way. Concretely https://github.com/upstash/context7/ fails
without this change.
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John Howard 2025-07-29 20:08:31 -07:00 • committed by GitHub
commit 0a9a0a0b1f
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crates/rmcp/src/model/capabilities.rs
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@ -36,6 +36,7 @@ pub struct ToolsCapability {
#[serde(rename_all = "camelCase")] #[serde(rename_all = "camelCase")]
#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))] #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
pub struct RootsCapabilities { pub struct RootsCapabilities {
#[serde(skip_serializing_if = "Option::is_none")]
pub list_changed: Option<bool>, pub list_changed: Option<bool>,
} }