Skip to content

[Discussion] Built-in load/concurrency test mode for stress-testing MCP servers #2439

Closed

Description

@CloneOfAlex

Which client?

All / shared core

The problem

There's no way to point the Inspector at a server and generate concurrent/sustained request load to see how it behaves under stress (connection limits, backpressure, timeout tuning). Today that means writing a separate script outside the Inspector entirely, which loses all the connection/auth/transport setup the Inspector already has.

This is more speculative and architectural than a typical parity fix, so flagging it as a discussion rather than a fully-scoped request -- it sits outside the current roadmap's frame.

Solution you have in mind (optional)

A CLI mode that fires N concurrent tool calls (or a configurable rate) for a set duration, reporting a latency/error-rate summary at the end.

Alternatives or workarounds you have tried

No response

Already built it locally?

No response

Before you submit

  • I searched existing issues and this is not a duplicate.
  • This is a request for the Inspector itself, not for the MCP specification or an SDK.

Activity

  1. added
    questionFurther information is requested
    and removed on Sep 23, 2026
  2. cliffhall commented on Sep 23, 2026

    @cliffhall
    Member

    Triage: Priority Low (total 3)

    • Severity 2: a new capability (load mode) with an easy workaround (an external script).
    • Urgency 1: no time pressure. Self-described discussion, outside the current roadmap, retyped `enhancement` → `question`.
    • Bonuses: none

    Board: #28, Status Incoming (awaiting maintainer review, no milestone yet).

  3. added this to the v2.10.0 milestone on Sep 23, 2026
  4. modified the milestones: v2.10.0, v2.11.0 on Oct 5, 2026
  5. modified the milestones: v2.11.0, v2.12.0 on Oct 12, 2026
  6. modified the milestones: v2.12.0, v2.13.0 on Oct 20, 2026
  7. self-assigned this
    on Oct 20, 2026
  8. modified the milestones: v2.13.0, v2.12.0 on Oct 20, 2026
  9. cliffhall commented on Oct 20, 2026

    @cliffhall
    Member

    Shipped in #2743 (merged to v2/main).

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Labels

questionFurther information is requestedv2Issues and PRs for v2

Type

No type

Projects

No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions