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auth: scope MCP tokens by server name - #439
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Paul (pwang347) wants to merge 2 commits into
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8 tasks done
Add an optional MCP server identity to authenticate requests and regenerate every client/schema mirror so hosts can route same-resource credentials independently. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Replace `AuthenticateParams.serverName` with an optional, extensible `target` discriminated union. The `mcpServer` variant identifies the consumer by session URI and `McpServerCustomization.id`, which clients echo from host-published state. A bare server name is not unique across sessions or manifests, and `authenticate` is a root-channel command. With a target, hosts MUST apply the token only to that MCP server in that session. Without one, resource/scope matching is unchanged. `kind` is @nonexhaustive so host-owned authentication (#404) can add variants. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Connor Peet (connor4312)
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Connor Peet (connor4312)
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October 20, 2026 18:17
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reopening so we don't have to wait for the CLA, that's an edge case 😅 |
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Summary
serverNametoauthenticaterequests for MCP-owned challengesValidation
npm test(localnpm ciis blocked by anENOTCONNregistry error; CI should run the canonical dependency/toolchain matrix)Compatibility
The field is optional. Existing provider-level authentication and older clients continue to key tokens by resource and scopes; clients resolving a specific MCP challenge can opt into server-scoped routing.