← Back to Demand Signal Radar
PUBLIC VALIDATION BRIEF

Feature Request: Pass `_meta` parameter through to MCP SDK `call_tool()`

Evidence observed in langchain-ai/langchain, a Research project.

16 comments10 positive reactions266 days openProject Radar 95
externalmcp
Start the no-account validation tool4 guided steps · private browser notes · export anytime
DEMAND CONFIDENCE

REPEATED ACROSS 7 PROJECTS

Related friction appears in 7 independent repositories. This is stronger than one backlog item, but still requires direct user validation.

Project strength and demand confidence are measured separately.
SOURCE EVIDENCE

Start with what users actually said

Reporter context: Problem When invoking MCP tools via , the parameter is not passed through to the MCP SDK's method, even though: The MCP SDK already supports it - accepts as a keyword argument The MCP specification (2025-06-18) defines as a reserved field for attaching metadata to requests This prevents users from leveraging MCP's…Excerpted from the public Issue. Read the complete thread before interpreting it.

Read original GitHub Issue ↗
RESEARCH VALIDATION LENS

Recruit: Recruit people who can bring a recent literature, evidence-review or source-tracing task.

Guardrail: Measure citation accuracy, coverage and review time; never reward speed at the expense of source fidelity.

01 · Tool & system connectors

Write the problem hypothesis

For [team], moving data between [system A] and [system B] requires [manual work], causing [delay or errors].

You can name one user, one situation and one measurable consequence without proposing a feature.
02 · EVIDENCE INTERVIEW

Interview five researchers, analysts or librarians

  • Which systems must exchange data?
  • What triggers the handoff?
  • Which fields or permissions block it?
  • How is it handled today?
  • Who owns failures between systems?
At least three people independently describe the same painful workflow with recent examples.
03 · MINIMUM TEST

Run the smallest experiment

Manually operate or prototype one high-frequency connection for one team before building a general connector.

A user completes the real cross-system workflow twice and asks to keep the connection active.Measure citation accuracy, coverage and review time; never reward speed at the expense of source fidelity.
04 · DECISION GATE

Make a build decision

  • Build: repeated pain and active commitment
  • Narrow: pain is real but the audience or job differs
  • Stop: weak frequency or no behavioral proof
Do not let GitHub engagement replace direct validation.

Why this brief exists

Information has value only when it changes action. This page turns one public signal into a bounded validation exercise. It is a research aid, not proof of demand, investment advice or a product recommendation.