The MCP ecosystem often has several independent packages implementing the same tool — and "Slack" currently has 30. Every one of them was scanned with the same deterministic engine, so the numbers below are directly comparable: the Trust Score (A–F), the capability blast radius, and how much of the package the scan could actually inspect. They are ranked by score; ties break toward unscoped, longer-established packages.
| Implementation | Package | Trust | Capability | Coverage | Findings | Scanned |
|---|---|---|---|---|---|---|
| Slack Source verifiedbest by nrjdalal | @nrjdalal/slack-mcp-server
npm |
A 100/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack by tomgutt | slack-mcp
npm |
A 99/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack by node2flow | @node2flow/slack-mcp
npm |
A 99/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack by bossforce.ai | @bossforce.ai/mcp-slack
npm |
A 99/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack by universal-mcp-toolkit | @universal-mcp-toolkit/server-slack
npm |
A 99/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack by npm | mcp-server-slack
npm |
A 98/100 | Minimal | Source | 0 | 2026-09-07 |
| Slack (official) Official by modelcontextprotocol | @modelcontextprotocol/server-slack
npm |
A 97/100 | Moderate | Source | 1 | 2026-08-25 |
| Slack Source verified by vitruviansoftware | @vitruviansoftware/mcp-slack
npm |
A 97/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack Source verified by zencoderai | @zencoderai/slack-mcp-server
npm |
A 97/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack Source verified by mindstone | @mindstone/mcp-server-slack
npm |
A 97/100 | Moderate | Source | 3 | 2026-08-25 |
| Slack Source verified by axivo | @axivo/mcp-slack
npm |
A 97/100 | Moderate | Source | 0 | 2026-09-05 |
| Slack by mintmcp | @mintmcp/slack-mcp-server
npm |
A 96/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack by dudztroyer | @dudztroyer/slack-mcp-server
npm |
A 96/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack by mcpflow.io | @mcpflow.io/mcp-slack
npm |
A 96/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack by tokamohsen | @tokamohsen/mcp-slack
npm |
A 96/100 | Moderate | Source | 1 | 2026-09-07 |
| Slack by cloud9-labs | @cloud9-labs/mcp-slack
npm |
A 96/100 | Moderate | Source | 0 | 2026-09-07 |
| Slack by yourusername | slack-mcp-server
PyPI |
A 96/100 | Moderate | Source | 0 | 2026-08-25 |
| Slack by Chisanan232 | slack-mcp
PyPI |
A 96/100 | Moderate | Source | 1 | 2026-08-25 |
| Slack by npm | mcp-slack
npm |
A 95/100 | Moderate | Source | 0 | 2026-09-05 |
| Slack by sergdev1 | @sergdev1/slack-mcp-server
npm |
A 95/100 | Moderate | Source | 0 | 2026-09-07 |
| Slack by PyPI | mcp-slack
PyPI |
A 95/100 | Moderate | Source | 0 | 2026-08-25 |
| Slack (Sigma Computing) Source verified by sigmacomputing | @sigmacomputing/slack-mcp-server
npm |
A 94/100 | High | Source | 2 | 2026-08-25 |
| Slack Source verified by jtalk22 | @jtalk22/slack-mcp
npm |
A 94/100 | High | Source | 4 | 2026-08-25 |
| Slack Source verified by avidian | @avidian/mcp-slack
npm |
A 94/100 | High | Source | 2 | 2026-09-05 |
| Slack by korotovsky | slack-mcp-server
npm |
A 93/100 | High | Source | 1 | 2026-08-30 |
| Slack by chinchillaenterprises | @chinchillaenterprises/mcp-slack
npm |
A 93/100 | High | Source | 5 | 2026-09-05 |
| Slack by charlesabear | @charlesabear/slack-mcp-server
npm |
A 93/100 | High | Source | 1 | 2026-09-07 |
| Slack by iflow-mcp | @iflow-mcp/slack-mcp-server
npm |
A 93/100 | High | Source | 2 | 2026-09-07 |
| Slack by monsoft | @monsoft/mcp-slack
npm |
A 93/100 | High | Source | 3 | 2026-09-05 |
| Slack by kazuph | @kazuph/mcp-slack
npm |
A 93/100 | High | Source | 1 | 2026-09-04 |
A higher-ranked implementation is not "the official one" — ranking reflects only what the deterministic scan found in each published package. Open an implementation to read its individual findings with evidence, its scan history per version, and to grab an embeddable badge. Scores are automated opinions, recomputed on every rescan.