jtalk22/slack-mcp-server

v4.3.0 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 22d MCP SaaS Integrations

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Topics

platform-commercial status-live

Affected surfaces

auth

ReleasePort's take

Light signal

editorial:auto 13d

Slack MCP v4.3.0 adds automatic token refresh capabilities through a new --refresh-tokens CLI flag and macOS LaunchAgent template. Documentation has been reorganized and MCP configuration guidance improved.

Why it matters: Token expiry is a common operational burden. Automation eliminates manual refresh workflows. Recommended for teams managing long-running Slack integrations.

Summary

AI summary

Added --refresh-tokens CLI flag to automate token refresh and updated documentation.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	Adds --refresh-tokens CLI flag for automatic token refresh Adds --refresh-tokens CLI flag for automatic token refresh Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Adds macOS LaunchAgent template for twice-daily token refresh Adds macOS LaunchAgent template for twice-daily token refresh Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Low	Adds --refresh-tokens CLI flag to run Chrome auto‑extract path Adds --refresh-tokens CLI flag to run Chrome auto‑extract path Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Bugfix	Medium	Corrects SETUP.md MCP configuration troubleshooting guidance Corrects SETUP.md MCP configuration troubleshooting guidance Source: llm_adapter@2026-05-21 Confidence: low	—
Bugfix	Medium	Corrects SETUP.md troubleshooting to verify MCP config JSON syntax Corrects SETUP.md troubleshooting to verify MCP config JSON syntax Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Refactor
Refactor	Medium	Reorganizes CLAUDE.md tool documentation into grouped categories Reorganizes CLAUDE.md tool documentation into grouped categories Source: llm_adapter@2026-05-21 Confidence: low	—
Refactor	Medium	Improves README clarity on tool counts and release notes Improves README clarity on tool counts and release notes Source: llm_adapter@2026-05-21 Confidence: low	—
Refactor	Low	Updates CLAUDE.md tool count from 16 to 21 and regroups categories Updates CLAUDE.md tool count from 16 to 21 and regroups categories Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Refactor	Low	Removes version pinning from Workflow Primitives heading in README Removes version pinning from Workflow Primitives heading in README Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Refactor	Low	Clarifies footer math in README regarding Slack tool counts Clarifies footer math in README regarding Slack tool counts Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Refactor	Low	Makes "What's New in 4.2.0" section collapsible using <details> Makes "What's New in 4.2.0" section collapsible using <details> Source: granite4.1:30b@2026-05-23-audit Confidence: low	—

Full changelog

Added

--refresh-tokens CLI flag — npx -y @jtalk22/slack-mcp --refresh-tokens now runs the Chrome auto-extract path (equivalent to npm run tokens:auto). Closes the gap between the wizard-only --setup flag and the unscheduled-by-default token-refresh capability. Designed to be called from a LaunchAgent, cron, or CI to keep tokens fresh while Claude is closed for weeks at a time.
Token-refresh LaunchAgent docs (docs/SETUP.md) — Optional macOS LaunchAgent template that runs --refresh-tokens twice a day, regardless of whether Claude is running. Closes the "tokens expired after vacation" failure mode. Honest about the trade-off (Chrome must be running for extraction to succeed).

Changed

Tool count in maintainer docs — CLAUDE.md updated from 16 to 21 tools, regrouped into Slack reads (12) / Slack writes (4) / workflow primitives (2) / hosted-brain upgrade stubs (3). Aligns with README's Tools section.
README clarity — Workflow Primitives heading no longer pinned to "(new in 4.2)" — version info moved into body copy. Footer math clarified: "16 Slack tools (12 read, 4 write)" replaces the ambiguous "all 16 read/write Slack tools". "What's New in 4.2.0" section now collapsible (<details>) — sets a maintenance pattern for future release-note rollups.

Fixed

SETUP.md troubleshooting — "Verify the path to server.js is correct" replaced with "Verify JSON syntax in your client's MCP config", aligning with the npx invocation pattern that's already canonical elsewhere in the docs.

Install

npx -y @jtalk22/[email protected] --setup

To keep tokens fresh while the MCP client is closed, see the optional LaunchAgent setup.

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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.

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