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- #3506 · jlowin opened
on Mar 14, 2026
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is:issue state:open
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- Status: Open.#4495 In PrefectHQ/fastmcp;
compress_schema mutates the caller's schema in place (contradicts its docstring)
bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.clientRelated to the FastMCP client SDK or client-side functionality.Related to the FastMCP client SDK or client-side functionality.Status: Open.#4493 In PrefectHQ/fastmcp;DescopeProvider should allow for
scopes_supportedand for Project-level IssuersauthRelated to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.Related to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.enhancementImprovement to existing functionality. For issues and smaller PR improvements.Improvement to existing functionality. For issues and smaller PR improvements.Status: Open.#4490 In PrefectHQ/fastmcp;deepObject style query parameters lose their parent key in _serialize_query_params (director.py) — object properties become bare top-level params
bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.openapiRelated to OpenAPI integration, parsing, or code generation features.Related to OpenAPI integration, parsing, or code generation features.too-longExcessively verbose or unedited LLM output. Condense before triage.Excessively verbose or unedited LLM output. Condense before triage.Status: Open.#4488 In PrefectHQ/fastmcp;Scalar/list elicitation schemas emit a non-suppressible top-level
title(internal model name)bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.serverRelated to FastMCP server implementation or server-side functionality.Related to FastMCP server implementation or server-side functionality.Status: Open.#4477 In PrefectHQ/fastmcp;StdioTransport(keep_alive=True)can't be reused across concurrently-alive event loops —initializehandshake hangs for the fullinit_timeoutbugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.clientRelated to the FastMCP client SDK or client-side functionality.Related to the FastMCP client SDK or client-side functionality.Status: Open.#4471 In PrefectHQ/fastmcp;Expose the OIDC id_token alongside the access token
authRelated to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.Related to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.enhancementImprovement to existing functionality. For issues and smaller PR improvements.Improvement to existing functionality. For issues and smaller PR improvements.too-longExcessively verbose or unedited LLM output. Condense before triage.Excessively verbose or unedited LLM output. Condense before triage.Status: Open.#4463 In PrefectHQ/fastmcp;bug: tool list tools() results cached across content-type changes
bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.serverRelated to FastMCP server implementation or server-side functionality.Related to FastMCP server implementation or server-side functionality.Status: Open.#4461 In PrefectHQ/fastmcp;Expired OAuth client secret timestamp can crash client info storage
authRelated to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.Related to authentication (Bearer, JWT, OAuth, WorkOS) for client or server.bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.clientRelated to the FastMCP client SDK or client-side functionality.Related to the FastMCP client SDK or client-side functionality.Status: Open.#4457 In PrefectHQ/fastmcp;Background task session registry keeps entries after disconnect
bugSomething isn't working. Reports of errors, unexpected behavior, or broken functionality.Something isn't working. Reports of errors, unexpected behavior, or broken functionality.serverRelated to FastMCP server implementation or server-side functionality.Related to FastMCP server implementation or server-side functionality.Status: Open.#4456 In PrefectHQ/fastmcp;ResponseCachingMiddleware drops icons from list results
serverRelated to FastMCP server implementation or server-side functionality.Related to FastMCP server implementation or server-side functionality.Status: Open.#4455 In PrefectHQ/fastmcp;Proposal: Funded Agent-Trust Review of FastMCP
invalidIssue lacks info, is off-topic, or doesn't make sense. Often LLM-generated spam.Issue lacks info, is off-topic, or doesn't make sense. Often LLM-generated spam.Status: Open.#4454 In PrefectHQ/fastmcp;