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korotovsky/slack-mcp-server

v1.3.0 Feature

This release adds 5 notable features for engineering teams evaluating rollout.

Published 20d MCP Browser & Automation
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

assistants govslack llm mcp mcp-server slack
+1 more
slack-api

Affected surfaces

deps

Summary

AI summary

Add support for direct user ID lookup in users_search.

Changes in this release

Feature Medium

Direct user ID lookup supported in users_search

Direct user ID lookup supported in users_search

Source: llm_adapter@2026-05-21

Confidence: high

 —
Feature Medium

conversations_join and conversations_leave tools added

conversations_join and conversations_leave tools added

Source: llm_adapter@2026-05-21

Confidence: high

 —
Feature Medium

Image attachments returned as native MCP image content

Image attachments returned as native MCP image content

Source: llm_adapter@2026-05-21

Confidence: high

 —
Feature Medium

Stale-while-revalidate cache for large Slack workspaces implemented

Stale-while-revalidate cache for large Slack workspaces implemented

Source: llm_adapter@2026-05-21

Confidence: high

 —
Feature Medium

Channel ID and permalink included in search results

Channel ID and permalink included in search results

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

File names included in AttachmentIDs for message responses

File names included in AttachmentIDs for message responses

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

Text content extracted from message blocks in conversations_history

Text content extracted from message blocks in conversations_history

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

blocks parameter added, slack-go-util bumped to v0.4.0

blocks parameter added, slack-go-util bumped to v0.4.0

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

saved_list, saved_update, and saved_clear_completed tools added

saved_list, saved_update, and saved_clear_completed tools added

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

query and query_targets parameters added to channels_list tool

query and query_targets parameters added to channels_list tool

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

channels_me tool added

channels_me tool added

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

Email metadata extracted from file-type messages

Email metadata extracted from file-type messages

Source: llm_adapter@2026-05-21

Confidence: low

 —
Dependency Medium

GitHub Actions group dependencies updated across 1 directory with 5 updates

GitHub Actions group dependencies updated across 1 directory with 5 updates

Source: llm_adapter@2026-05-21

Confidence: low

 —
Dependency Medium

Go dependencies updated across 1 directory with 9 updates

Go dependencies updated across 1 directory with 9 updates

Source: llm_adapter@2026-05-21

Confidence: low

 —
Bugfix Medium

Non-blocking stdio startup and --no-cache flag fixed

Non-blocking stdio startup and --no-cache flag fixed

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Rate limiting and retry added to SearchContext

Rate limiting and retry added to SearchContext

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Slack refresh token format (xoxe) handled correctly

Slack refresh token format (xoxe) handled correctly

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Conversations_add_message returns plain confirmation

Conversations_add_message returns plain confirmation

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Bot and integration messages no longer lose structured content silently

Bot and integration messages no longer lose structured content silently

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Targeted user cache patch added on miss

Targeted user cache patch added on miss

Source: llm_adapter@2026-05-21

Confidence: high

 —
Bugfix Medium

Punctuation, emoji, and quotes stopped being deleted from messages

Punctuation, emoji, and quotes stopped being deleted from messages

Source: llm_adapter@2026-05-21

Confidence: low

 —
Other Medium

Incorrect env var references for reactions fixed, missing tool env vars added

Incorrect env var references for reactions fixed, missing tool env vars added

Source: llm_adapter@2026-05-21

Confidence: low

 —
Full changelog

What's Changed

  • fix: non-blocking stdio startup and --no-cache flag by @mustafa89 in https://github.com/korotovsky/slack-mcp-server/pull/277
  • docs: fix incorrect env var references for reactions and add missing tool env vars by @coolwuu in https://github.com/korotovsky/slack-mcp-server/pull/245
  • Include channel ID and permalink in search results by @tmastny in https://github.com/korotovsky/slack-mcp-server/pull/265
  • fix: add rate limiting and retry to SearchContext by @flacoste in https://github.com/korotovsky/slack-mcp-server/pull/262
  • fix: handle Slack refresh token format (xoxe) by @aharon-br in https://github.com/korotovsky/slack-mcp-server/pull/297
  • fix: return plain confirmation from conversations_add_message by @clwluvw in https://github.com/korotovsky/slack-mcp-server/pull/284
  • Include file names in AttachmentIDs for message responses by @bkbaheti in https://github.com/korotovsky/slack-mcp-server/pull/279
  • feat: support direct user ID lookup in users_search by @Christian-Sidak in https://github.com/korotovsky/slack-mcp-server/pull/263
  • feat: add conversations_join and conversations_leave tools by @georgebashi in https://github.com/korotovsky/slack-mcp-server/pull/219
  • feat: extract text content from message blocks in conversations_history by @derodero24 in https://github.com/korotovsky/slack-mcp-server/pull/190
  • feat: add blocks parameter and bump slack-go-util to v0.4.0 by @arnstarn in https://github.com/korotovsky/slack-mcp-server/pull/294
  • deps(gha): bump the github-actions group across 1 directory with 5 updates by @dependabot[bot] in https://github.com/korotovsky/slack-mcp-server/pull/280
  • feat: return image attachments as native MCP image content by @vbichkovsky in https://github.com/korotovsky/slack-mcp-server/pull/237
  • feat: stale-while-revalidate cache for large Slack workspaces by @flacoste in https://github.com/korotovsky/slack-mcp-server/pull/225
  • feat: add saved_list, saved_update, and saved_clear_completed tools by @jonzarecki in https://github.com/korotovsky/slack-mcp-server/pull/240
  • feat: add query and query_targets parameters to channels_list tool by @unsafe9 in https://github.com/korotovsky/slack-mcp-server/pull/252
  • fix: bot and integration messages silently lose structured content by @tim-watcha in https://github.com/korotovsky/slack-mcp-server/pull/272
  • fix(text): stop deleting punctuation, emoji, and quotes from messages by @byrmsh in https://github.com/korotovsky/slack-mcp-server/pull/281
  • feat: add channels_me tool by @georgebashi in https://github.com/korotovsky/slack-mcp-server/pull/220
  • feat: extract email metadata from file-type messages by @derodero24 in https://github.com/korotovsky/slack-mcp-server/pull/192
  • deps(go): bump the go-dependencies group across 1 directory with 9 updates by @dependabot[bot] in https://github.com/korotovsky/slack-mcp-server/pull/292
  • Add targeted user cache patch on miss by @gkatz2 in https://github.com/korotovsky/slack-mcp-server/pull/269

New Contributors

  • @mustafa89 made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/277
  • @coolwuu made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/245
  • @tmastny made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/265
  • @flacoste made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/262
  • @aharon-br made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/297
  • @clwluvw made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/284
  • @bkbaheti made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/279
  • @Christian-Sidak made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/263
  • @derodero24 made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/190
  • @arnstarn made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/294
  • @vbichkovsky made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/237
  • @jonzarecki made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/240
  • @unsafe9 made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/252
  • @tim-watcha made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/272
  • @byrmsh made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/281
  • @gkatz2 made their first contribution in https://github.com/korotovsky/slack-mcp-server/pull/269

Full Changelog: https://github.com/korotovsky/slack-mcp-server/compare/v1.2.3...v1.3.0

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About korotovsky/slack-mcp-server

The most powerful MCP server for Slack Workspaces.

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Beta — feedback welcome: [email protected]