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Side-by-side comparison of two Model Context Protocol servers. Pick the right one for Claude Desktop, Claude Code, or Cursor.
Audit-grade memory backbone for agent teams. Bi-temporal facts (event time + transaction time, with recall(as_of=...) replay), 6-step deterministic retrieval (n
| Feature | Attestor | Slack |
|---|---|---|
| Pricing | Free | Free |
| Installs | — | 9,200 |
| Rating | — | 4.6 (158) |
| Verified | — | |
| Hosted | — | Hosted |
| Tools | — | 4 |
| Category | communication | communication |
| Author | bolnet | Slack |
| Repo | bolnet/attestor | unyly/mcp-slack |
Audit-grade memory backbone for agent teams. Bi-temporal facts (event time + transaction time, with recall(as_of=...) replay), 6-step deterministic retrieval (no LLM in the critical path), conversation ingest with speaker-locked dual-pass extraction, per-tenant Postgres row-level security, and Ed25519-signed provenance. Postgres + pgvector + Neo4j defaults.
Bring your Slack into Claude. Catch up on channels, search history, send messages and summarize long threads.
Looking for something else? Browse all MCPs or check trending this week.