This release includes breaking changes for platform teams planning a safe upgrade.
✓ No known CVEs patched in this version
Topics
Summary
AI summaryFixed Slack endpoint request body handling and npx CLI resolution failures.
Full changelog
[!IMPORTANT]
Superseded byv3.0.0. Use the latest release for current install/migration guidance.
v1.2.1 — Reliability + Installer Fixes
This patch resolves two high-friction paths:
slack_get_thread/ search calls returninginvalid_arguments- downstream
npx @jtalk22/slack-mcpexecutable resolution failures
Fixed
- Form-encoded request bodies for Slack endpoints that require them (
conversations.replies,search.messages,search.all,search.files,users.info) with parity across server and worker runtimes. - Added a default
slack-mcpCLI binary sonpx @jtalk22/slack-mcpresolves consistently. - Unified CLI dispatch from one entrypoint: default stdio server +
web,http,--setup,--status,--version. - Setup wizard bugfixes: env restoration on validation failure and corrected terminal prompt rendering.
Security / Runtime
- Upgraded
@modelcontextprotocol/sdkto1.27.0. - Aligned Docker and setup docs to Node 20+ baseline.
Quick Verify
npx -y @jtalk22/slack-mcp --version
npx -y @jtalk22/slack-mcp --setup
No breaking changes expected.
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About jtalk22/slack-mcp-server
Your complete Slack context for Claude—DMs, channels, threads, search. No OAuth apps, no admin approval. `--setup` and done, 11 tools, auto-refresh.
Related context
Beta — feedback welcome: [email protected]