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feat: support auth block in MCP servers config in agents#24770

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scidomino merged 5 commits intogoogle-gemini:mainfrom
TanmayVartak:feat/mcp-auth-agent-config
Apr 13, 2026
Merged

feat: support auth block in MCP servers config in agents#24770
scidomino merged 5 commits intogoogle-gemini:mainfrom
TanmayVartak:feat/mcp-auth-agent-config

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This PR adds support for the 'auth' block in the 'mcp_servers' section of agent markdown files, allowing local agents to configure Google credentials or OAuth for MCP servers.

@TanmayVartak TanmayVartak requested a review from a team as a code owner April 6, 2026 19:43
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Summary of Changes

Hello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces authentication capabilities for MCP servers defined in local agent markdown files. By adding an 'auth' block, users can now configure Google credentials or OAuth settings directly within their agent definitions, enabling secure access to MCP servers that require authentication.

Highlights

  • Authentication Support: Added support for an 'auth' block within the 'mcp_servers' configuration in agent markdown files.
  • Configuration Schema: Updated Zod schemas to validate 'google-credentials' and 'oauth' authentication types for MCP servers.
  • Agent Loader Logic: Updated the agent loader to map the new authentication configuration to the internal MCPServerConfig structure.
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Code Review

This pull request introduces support for authentication configurations in MCP servers within agent definitions. It updates the mcpServerSchema to include google-credentials and oauth authentication types and modifies the markdownToAgentDefinition function to correctly map these configurations to MCPServerConfig. Additionally, a new test case was added to verify the conversion of MCP servers with Google credentials. I have no feedback to provide.

@gemini-cli gemini-cli Bot added the status/need-issue Pull requests that need to have an associated issue. label Apr 6, 2026
Comment thread packages/core/src/agents/agentLoader.ts
@scidomino scidomino enabled auto-merge April 13, 2026 18:46
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github-actions Bot commented Apr 13, 2026

59 tests passed successfully on gemini-3-flash-preview.

🧠 Model Steering Guidance

This PR modifies files that affect the model's behavior (prompts, tools, or instructions).

  • ⚠️ Consider adding Evals: No behavioral evaluations (evals/*.eval.ts) were added or updated in this PR. Consider adding a test case to verify the new behavior and prevent regressions.

This is an automated guidance message triggered by steering logic signatures.

@scidomino scidomino added this pull request to the merge queue Apr 13, 2026
Merged via the queue into google-gemini:main with commit a172b32 Apr 13, 2026
29 checks passed
ik-gemini-bot added a commit to spigell/gemini-cli that referenced this pull request Apr 23, 2026
* refactor(plan): simplify policy priorities and consolidate read-only rules (google-gemini#24849)

* feat(test-utils): add memory usage integration test harness (google-gemini#24876)

* feat(memory): add /memory inbox command for reviewing extracted skills (google-gemini#24544)

* chore(release): bump version to 0.39.0-nightly.20260408.e77b22e63 (google-gemini#24939)

* fix(core): ensure robust sandbox cleanup in all process execution paths (google-gemini#24763)

Co-authored-by: Spencer <spencertang@google.com>

* chore: update ink version to 6.6.8 (google-gemini#24934)

* Changelog for v0.38.0-preview.0 (google-gemini#24938)

Co-authored-by: gemini-cli-robot <224641728+gemini-cli-robot@users.noreply.github.com>
Co-authored-by: g-samroberts <samroberts@google.com>

* chore: ignore conductor directory (google-gemini#22128)

Co-authored-by: Coco Sheng <cocosheng@google.com>

* Changelog for v0.37.0 (google-gemini#24940)

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* feat(plan): require user confirmation for activate_skill in Plan Mode (google-gemini#24946)

* feat(test-utils): add CPU performance integration test harness (google-gemini#24951)

* fix(core): resolve windows symlink bypass and stabilize sandbox integration tests (google-gemini#24834)

* test(sdk): add unit tests for GeminiCliSession (google-gemini#21897)

* fix(cli): restore file path display in edit and write tool confirmations (google-gemini#24974)

* fix(cli-ui): enable Ctrl+Backspace for word deletion in Windows Terminal (google-gemini#21447)

* fix(core): dynamic session ID injection to resolve resume bugs (google-gemini#24972)

* Update ink version to 6.6.9 (google-gemini#24980)

* feat(core): refine shell tool description display logic (google-gemini#24903)

* Generalize evals infra to support more types of evals, organization and queuing of named suites (google-gemini#24941)

* fix(cli): optimize startup with lightweight parent process (google-gemini#24667)

* refactor(sandbox): use centralized sandbox paths in macOS Seatbelt implementation (google-gemini#24984)

* feat(cli): refine tool output formatting for compact mode (google-gemini#24677)

* fix(sdk): skip broken sendStream tests to unblock nightly (google-gemini#25000)

* refactor(core): use centralized path resolution for Linux sandbox (google-gemini#24985)

* Support ctrl+shift+g (google-gemini#25035)

* feat(core): refactor subagent tool to unified invoke_subagent tool (google-gemini#24489)

* fix(core): add explicit git identity env vars to prevent sandbox checkpointing error (google-gemini#19775)

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* fix: respect hideContextPercentage when FooterConfigDialog is closed without changes (google-gemini#24773)

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* fix(cli): suppress unhandled AbortError logs during request cancellation (google-gemini#22621)

* Automated documentation audit (google-gemini#24567)

* feat(cli): implement useAgentStream hook (google-gemini#24292)

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Co-authored-by: Adam Weidman <adamfweidman@google.com>

* refactor(core): remove legacy subagent wrapping tools (google-gemini#25053)

* refactor(plan) Clean default plan toml (google-gemini#25037)

* fix(core): honor retryDelay in RetryInfo for 503 errors (google-gemini#25057)

* fix(core): remediate subagent memory leaks using AbortSignal in MessageBus (google-gemini#25048)

* feat(cli): wire up useAgentStream in AppContainer (google-gemini#24297)

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Co-authored-by: Adam Weidman <adamfweidman@google.com>

* feat(core): migrate chat recording to JSONL streaming (google-gemini#23749)

* fix(core): clear 5-minute timeouts in oauth flow to prevent memory leaks (google-gemini#24968)

* fix(sandbox): centralize async git worktree resolution and enforce read-only security (google-gemini#25040)

* feat(test): add high-volume shell test and refine perf harness (google-gemini#24983)

* fix(core): silently handle EPERM when listing dir structure (google-gemini#25066)

* Changelog for v0.37.1 (google-gemini#25055)

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* fix: decode Uint8Array and multi-byte UTF-8 in API error messages (google-gemini#23341)

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* Automated documentation audit results (google-gemini#22755)

* debugging(ui): add optional debugRainbow setting (google-gemini#25088)

* fix: resolve lifecycle memory leaks by cleaning up listeners and root closures (google-gemini#25049)

* docs(cli): updates f12 description to be more precise (google-gemini#15816)

* fix(cli): mark /settings as unsafe to run concurrently (google-gemini#25061)

* fix(core): remove buffer slice to prevent OOM on large output streams (google-gemini#25094)

* feat(core): persist subagent agentId in tool call records (google-gemini#25092)

* chore(core): increase codebase investigator turn limits to 50 (google-gemini#25125)

* refactor(core): consolidate execute() arguments into ExecuteOptions (google-gemini#25101)

* feat(core): add Strategic Re-evaluation guidance to system prompt (google-gemini#25062)

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* fix(cli): pass session id to interactive shell executions (google-gemini#25114)

* fix(cli): resolve text sanitization data loss due to C1 control characters (google-gemini#22624)

* feat(core): add large memory regression test (google-gemini#25059)

* fix(core): resolve PTY exhaustion and orphan MCP subprocess leaks (google-gemini#25079)

* chore: switch from keytar to @github/keytar (google-gemini#25143)

* chore(deps): update vulnerable dependencies via npm audit fix (google-gemini#25140)

* perf(sandbox): optimize Windows sandbox initialization via native ACL application (google-gemini#25077)

* fix: improve audio MIME normalization and validation in file reads (google-gemini#21636)

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* docs: Update docs-audit to include changes in PR body (google-gemini#25153)

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* fix(cli): exclude update_topic from confirmation queue count (google-gemini#24945)

* Memory fix for trace's streamWrapper. (google-gemini#25089)

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* docs(contributing): clarify self-assignment policy for issues (google-gemini#23087)

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* Stop suppressing thoughts and text in model response (google-gemini#25073)

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* Stop showing scrollbar unless we are in terminalBuffer mode (google-gemini#25320)

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* feat: support auth block in MCP servers config in agents (google-gemini#24770)

* feat(core): implement silent fallback for Plan Mode model routing (google-gemini#25317)

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* docs(core): update generalist agent documentation (google-gemini#25325)

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* fix(patch): cherry-pick a4e98c0 to release/v0.39.0-preview.0-pr-25138 to patch version v0.39.0-preview.0 and create version 0.39.0-preview.1 (google-gemini#25766)

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* chore(release): v0.39.0-preview.1

* fix(patch): cherry-pick d6f88f8 to release/v0.39.0-preview.1-pr-25670 to patch version v0.39.0-preview.1 and create version 0.39.0-preview.2 (google-gemini#25776)

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* chore(release): v0.39.0-preview.2

* chore(release): v0.39.0

---------

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