Decision Workspace
post-cortex-memory vs post-cortex-mcp vs recall-echo
Side-by-side comparison of Rust crates
49
post-cortex-memory
experimentalv0.3.1
Conversation memory orchestrator for post-cortex. Ties storage + embeddings + graph + session + summary into a single lock-free memory hierarchy with async pipelines and a canonical PostCortexService API.
51
post-cortex-mcp
experimentalv0.3.1
Model Context Protocol (MCP) tool definitions for post-cortex. Pure library — embed in rmcp, custom MCP servers, or anywhere else; no rmcp / axum / tonic transport dependencies.
49
recall-echo
experimentalv3.11.0
Persistent memory system with knowledge graph — for any LLM tool
Core Metrics
| post-cortex-memory | post-cortex-mcp | recall-echo | |
|---|---|---|---|
| Health Score | 49 | 51 | 49 |
| Total Downloads | 43 | 38 | 219 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 6 | 4 | 3 |
| Releases | 2 | 2 | 11 |
| Last Updated | 8d ago | 8d ago | 6d ago |
| Age | 8d | 8d | 3m |
Health Breakdown
post-cortex-memory
Maintenance
13
Quality
11
Community
8
Popularity
2
Documentation
15
post-cortex-mcp
Maintenance
13
Quality
13
Community
8
Popularity
2
Documentation
15
recall-echo
Maintenance
13
Quality
16
Community
7
Popularity
3
Documentation
10
Technical Details
| post-cortex-memory | post-cortex-mcp | recall-echo | |
|---|---|---|---|
| Version | 0.3.1 | 0.3.1 | 3.11.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | AGPL-3.0-only |
| Dependencies | 37 | 19 | 17 |
| Crate Size | 128KB | 57KB | 206KB |
| Features | 4 | 3 | 5 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | 1.90 | 1.90 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •post-cortex-mcp leads with a health score of 51/100, but none of the options score above 80.
- •recall-echo has the most downloads (219), suggesting wider adoption.
- •post-cortex-memory, post-cortex-mcp are pre-1.0 — API may change.