Skip to content

MCP servers returning large amounts of data broken between 1.16.2 and 1.17.7. Caused by MCP truncation changes. #32497

Closed as not planned

Description

@jgarff

Description

I have an MCP server that base64 encodes still images from video cameras to be processed by the model. Somewhere between 1.16.2 and 1.17.7 this no longer works. The model indicates that the data is truncated and corrupt with 1.17.7.

Plugins

weave

OpenCode version

1.17.7

Steps to reproduce

Use a MCP server that returns large amount of data.

Screenshot and/or share link

No response

Operating System

Ubuntu 22.04

Terminal

gnome terminal

Activity

  1. jgarff commented on Jun 19, 2026

    @jgarff
    Author

    Looks like this may be needed to resolve this issue:
    #28907

  2. jgarff commented on Jun 29, 2026

    @jgarff
    Author

    Bump please. Is there a workaround, or fix for this?

  3. changed the title [-]MCP servers returning large amounts of data broken between 1.16.2 and 1.17.7[/-] [+]MCP servers returning large amounts of data broken between 1.16.2 and 1.17.7. Caused by MCP truncation changes.[/+] on Jun 29, 2026
  4. github-actions commented on Aug 28, 2026

    @github-actions
    Contributor

    To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.

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

Metadata

Metadata

Assignees

Labels

No labels
No labels

Type

No type

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions