feat: add list-tasklists tool and fix OAuth token refresh#20
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Adds two improvements: 1. New `list-tasklists` tool that returns all task lists with their IDs. This is useful for discovering which taskListId to use with other operations. 2. Fix OAuth token refresh by initializing OAuth2 client with client_id and client_secret from the OAuth keys file. Previously, tokens would expire and break because the client couldn't refresh them. Now tokens are automatically refreshed and saved to disk. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Additional fixes: 1. Support GOOGLE_OAUTH_CREDENTIALS env var (zcaceres#18) - Allows specifying a shared location for OAuth credentials - Falls back to default relative path if not set 2. Fix Windows path resolution (zcaceres#7, zcaceres#11) - Use fileURLToPath() instead of URL.pathname - Fixes C:\C:\... path issue on Windows 3. Fix due date format for create/update (zcaceres#2) - Normalize dates to RFC3339 format required by Google Tasks API - Supports: date-only (2026-01-15), datetime (2026-01-15T21:00:00), and already-formatted RFC3339 strings - Fixes "invalid argument" error when setting due dates Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
This PR adds improvements and fixes to the gtasks MCP server:
1. New
list-taskliststool (Closes #3)taskListIdto use with other operations2. Fix OAuth token refresh
client_idandclient_secretto enable automatic token refresh3. Support
GOOGLE_OAUTH_CREDENTIALSenv var (Closes #18)4. Fix Windows path resolution (Closes #7, Closes #11)
fileURLToPath()instead ofURL.pathnameC:\C:\...path issue on Windows5. Fix due date format for create/update (Closes #2)
2026-01-15), datetime (2026-01-15T21:00:00), and pre-formatted RFC3339Test plan
list-tasklistsreturns all task lists with IDsGOOGLE_OAUTH_CREDENTIALSenv var works (tested with explicit path)fileURLToPathapproach)🤖 Generated with Claude Code