Reporter Notes

Notes

• Date: 2026-03-09
• Repo: google-gemini/gemini-cli
• Focus: MCP notifications/tools/list_changed reliability fixes.
• Core changes: debounced refresh, trailing execution queue, empty-discovery retry, handler registration even when listChanged capability absent; tests expanded (TDD).
• Anchors: PR #21050, commit 352fb0c9; prior list_changed support in 5f60281d2528 (2026-01-08).
• Output HTML: daily edition corpus/2026-03-09/index.html
• Edition route: /editions/2026-03-09/

Sources

Git commit (gemini-cli)

commit 352fb0c97680b11578f88277f9e0265aa9a2191a
Author: Jacob Richman <jacob314@gmail.com>
Date:   Wed Mar 4 06:46:17 2026 -0800

    fix(mcp): Notifications/tools/list_changed support not working (#21050)

    Co-authored-by: Bryan Morgan <bryanmorgan@google.com>

 packages/core/src/resources/resource-registry.ts |  13 ++
 packages/core/src/tools/mcp-client-manager.ts    |  50 ++++-
 packages/core/src/tools/mcp-client.test.ts       | 244 +++++++++++++++++++----
 packages/core/src/tools/mcp-client.ts            | 144 +++++++++++--
 4 files changed, 378 insertions(+), 73 deletions(-)

PR summary (gh)

title: fix(mcp): Notifications/tools/list_changed support not working
state: MERGED
number: 21050
url: https://github.com/google-gemini/gemini-cli/pull/21050
additions: 378
deletions: 73

Summary:
- Improved MCP context refresh with debouncing, queued trailing execution, and pending refresh processing.
- Registers list_changed notification handlers even when listChanged capability is absent.
- Adds retry when tool discovery returns empty/no changes.
- Updates unit tests with TDD coverage.

gsio search (local)

query: list_changed
project: google-gemini/gemini-cli
result: commit 5f60281d2528 (2026-01-08)
summary: Enable MCP clients to react to `notifications/tools/list_changed` by refreshing tools.