feat: add HTTP streamable option to MCP client

[victorazesc]

Summary

This PR introduces support for HTTP streamable responses when using the MCP client in the HTTP Request node.
This enables scenarios where the response body is large or long-lived (e.g., streamed AI completions).

How to test:

Added a new mcp client connector, added one http streamable source, like this image

Example workflow to test

Related Linear tickets, Github issues, and Community forum posts

No related tickets or issues at the moment.
Feature added proactively for advanced use cases with large or streamed data.

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

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[cubic-dev-ai]

cubic reviewed 4 files and found no issues. Review PR in cubic.dev.

[Joffcom]

Hey @victorazesc,

Thanks for the PR, We have created "GHC-2586" as the internal reference to get this reviewed.

One of us will be in touch if there are any changes needed, in most cases this is normally within a couple of weeks but it depends on the current workload of the team.

[victorazesc]

Ei@victorazesc,

Obrigado pelo PR. Criamos "GHC-2586" como referência interna para que isso seja revisado.

Um de nós entrará em contato caso seja necessária alguma alteração. Na maioria dos casos, isso normalmente ocorre em algumas semanas, mas depende da carga de trabalho atual da equipe.

Hey @victorazesc,

Thanks for the PR, We have created "GHC-2586" as the internal reference to get this reviewed.

One of us will be in touch if there are any changes needed, in most cases this is normally within a couple of weeks but it depends on the current workload of the team.

Thanks, happy to contribute! Let me know if I can help clarify anything during the review.

[Joffcom]

Hey @victorazesc,

Is this not the same as #15454?

[victorazesc]

Hey @victorazesc,

Is this not the same as #15454?

Actually, this PR doesn’t work — the client connection is being used incorrectly.

[shawoozy-goed]

I need this! 👍

[victorazesc]

I need this! 👍

I know, every body needs 😅