d9cff74d71
- Guide: documented Anthropic March 13-27 2026 promotion (2x limits outside 5-11am PT / all weekends), with CET timezone conversion for European users - Resource evaluation: ICM Infinite Context Memory MCP server (score 3/5) - CHANGELOG: both entries under [Unreleased] Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
113 lines
4.1 KiB
Markdown
113 lines
4.1 KiB
Markdown
# Resource Evaluation: ICM (Infinite Context Memory)
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**Date**: 2026-03-14
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**URL**: https://github.com/rtk-ai/icm
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**Type**: GitHub repository / MCP server
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**Score**: 3/5 — Integrated
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**Decision**: Added as section after Kairn in `guide/ultimate-guide.md` (~line 11365)
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---
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## Summary
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ICM is a persistent memory MCP server from the rtk-ai team (same authors as RTK/Rust Token Killer). It provides a dual memory architecture: "Memories" (episodic, configurable decay) and "Memoirs" (permanent knowledge graph with 9 typed relation types). Distributed as a single Rust binary with zero external dependencies, installable via Homebrew.
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### Key Points
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- Single Rust binary, SQLite, zero deps — Homebrew install
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- Dual architecture: episodic decay + permanent knowledge graph in one tool
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- Hybrid search: BM25 30% + vector similarity 70%
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- Auto-deduplication (>85% similarity blocked)
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- Auto-extraction: pattern hooks, pre-compaction, session-start
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- Supports 14 editors/clients (Claude Code, Cursor, VS Code, Windsurf, Zed, Amp, Cline, etc.)
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- 52 stars, 55 commits as of March 2026
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- License: Source-Available (free for individuals and teams ≤20; enterprise license required above)
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---
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## Scoring
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| Criterion | Score |
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|-----------|-------|
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| Relevance to Claude Code users | 4/5 |
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| Differentiation from existing content | 3/5 |
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| Maturity / adoption signal | 2/5 |
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| License openness | 2/5 |
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| **Overall** | **3/5** |
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---
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## Comparison vs Existing Guide Content
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| Feature | doobidoo | Kairn | ICM |
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|---------|----------|-------|-----|
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| Language | Python | Python | Rust (single binary) |
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| Install | pip | pip | Homebrew |
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| Episodic decay | No | Yes (biological) | Yes (configurable) |
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| Permanent knowledge graph | No | Yes | Yes (Memoirs) |
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| Auto-extraction | No | No | Yes |
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| License | MIT | MIT | Source-Available |
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Main differentiator: zero-dependency Rust binary lowers install friction for users who struggle with Python environments. Conceptual overlap with Kairn (knowledge graph + decay) is real but the runtime difference is meaningful.
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---
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## Benchmarks
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All benchmarks below are **vendor-reported by rtk-ai** — not independently verified.
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**Storage performance (1000 ops, 384d embeddings)**:
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- Store (no embeddings): 34.2 µs/op
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- Store (with embeddings): 51.6 µs/op
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- FTS5 full-text search: 46.6 µs/op
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- Vector search (KNN): 590.0 µs/op
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- Hybrid search: 951.1 µs/op
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**Agent efficiency (Haiku model, multi-session)**:
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- Session 2: 29% fewer turns, 32% less input context, 17% cost reduction
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- Session 3: 40% fewer turns, 44% less context, 22% cost reduction
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**Knowledge retention (10 questions)**:
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- Without ICM: 5%
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- With ICM: 68%
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Note: The knowledge retention benchmark uses a sample of 10 questions on Haiku — too narrow for generalization.
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---
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## Fact-Check
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| Claim | Status | Source |
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|-------|--------|--------|
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| Storage: 34.2 µs/op | ✅ | README benchmarks section |
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| Hybrid search: ~951 µs/op | ✅ | README benchmarks section |
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| 29-40% turn reduction | ✅ present / ⚠️ vendor-reported | README — rtk-ai self-evaluation |
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| 68% vs 5% knowledge retention | ✅ present / ⚠️ vendor-reported, n=10 | README |
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| Source-Available license, free ≤20 | ✅ | LICENSE file |
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| 9 Memoir relation types | ✅ | README full list |
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| 14 supported clients | ✅ | `icm init` documentation |
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| 52 stars | ✅ | GitHub as of 2026-03-14 |
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No hallucinations detected. All figures present in the source README.
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---
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## License Note
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Source-Available license. Free for individuals and teams of up to 20 people. **Enterprise license required for organizations above 20 people.** Contact: license@rtk.ai
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This was flagged in the guide entry with an explicit callout. Teams should verify their org size before deploying.
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---
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## Integration Location
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- New section: `guide/ultimate-guide.md` after Kairn (~line 11365), before "MCP Memory Stack: Complementarity Patterns"
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- Comparison matrix updated: ICM column added with Runtime and License rows
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## Upgrade Trigger
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Revisit for 4/5 if:
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- Benchmarks independently verified by community
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- Adoption exceeds 500+ stars with sustained commit activity
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- License changes to MIT/Apache
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