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Alexander Whitestone
cd7cb7bdc6 docs: finalize MemPalace evaluation report (#568)
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2026-04-15 00:37:43 -04:00
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# MemPalace Integration Evaluation Report
**Issue:** #568
**Original draft landed in:** PR #569
**Status:** Updated with live mining results, independent verification, and current recommendation
## Executive Summary
Evaluated **MemPalace v3.0.0** (github.com/milla-jovovich/mempalace) as a memory layer for the Timmy/Hermes agent stack.
Evaluated **MemPalace v3.0.0** (`github.com/milla-jovovich/mempalace`) as a memory layer for the Timmy/Hermes stack.
**Installed:**`mempalace 3.0.0` via `pip install`
**Works with:** ChromaDB, MCP servers, local LLMs
**Zero cloud:** ✅ Fully local, no API keys required
What is now established from the issue thread plus the merged draft:
- **Synthetic evaluation:** positive
- **Live mining on Timmy data:** positive
- **Independent Allegro verification:** positive
- **Zero-cloud property:** confirmed
- **Recommendation:** MemPalace is strong enough for pilot integration and wake-up experiments, but `timmy-home` should treat it as a proven candidate rather than the final uncontested winner until it is benchmarked against the current Engram direction documented elsewhere in this repo.
## Benchmark Findings (from Paper)
In other words: the evaluation succeeded. The remaining question is not whether MemPalace works. It is whether MemPalace should become the permanent fleet memory default.
## Benchmark Findings
These benchmark numbers were cited in the original evaluation draft:
| Benchmark | Mode | Score | API Required |
|---|---|---|---|
| **LongMemEval R@5** | Raw ChromaDB only | **96.6%** | **Zero** |
| **LongMemEval R@5** | Hybrid + Haiku rerank | **100%** | Optional Haiku |
| **LoCoMo R@10** | Raw, session level | 60.3% | Zero |
| **Personal palace R@10** | Heuristic bench | 85% | Zero |
| **Palace structure impact** | Wing+room filtering | **+34%** R@10 | Zero |
|---|---|---:|---|
| LongMemEval R@5 | Raw ChromaDB only | 96.6% | Zero |
| LongMemEval R@5 | Hybrid + Haiku rerank | 100% | Optional Haiku |
| LoCoMo R@10 | Raw, session level | 60.3% | Zero |
| Personal palace R@10 | Heuristic bench | 85% | Zero |
| Palace structure impact | Wing + room filtering | +34% R@10 | Zero |
## Before vs After Evaluation (Live Test)
These are paper-level or draft-level metrics. They matter, but the more important evidence for `timmy-home` is the live operational testing below.
### Test Setup
- Created test project with 4 files (README.md, auth.md, deployment.md, main.py)
- Mined into MemPalace palace
- Ran 4 standard queries
- Results recorded
## Before vs After Evaluation
### Before (Standard BM25 / Simple Search)
### Synthetic test setup
- 4-file test project:
- `README.md`
- `auth.md`
- `deployment.md`
- `main.py`
- mined into a MemPalace palace
- queried with 4 standard prompts
### Before (keyword/BM25 style expectations)
| Query | Would Return | Notes |
|---|---|---|
| "authentication" | auth.md (exact match only) | Misses context about JWT choice |
| "docker nginx SSL" | deployment.md | Manual regex/keyword matching needed |
| "keycloak OAuth" | auth.md | Would need full-text index |
| "postgresql database" | README.md (maybe) | Depends on index |
| `authentication` | `auth.md` | exact match only; weak on implementation context |
| `docker nginx SSL` | `deployment.md` | requires manual keyword logic |
| `keycloak OAuth` | `auth.md` | little semantic cross-reference |
| `postgresql database` | `README.md` maybe | depends on index quality |
**Problems:**
- No semantic understanding
- Exact match only
- No conversation memory
- No structured organization
- No wake-up context
Problems in the draft baseline:
- no semantic ranking
- exact match bias
- no durable conversation memory
- no palace structure
- no wake-up context artifact
### After (MemPalace)
### After (MemPalace synthetic results)
| Query | Results | Score | Notes |
|---|---|---:|---|
| `authentication` | `auth.md`, `main.py` | -0.139 | finds auth discussion and implementation |
| `docker nginx SSL` | `deployment.md`, `auth.md` | 0.447 | exact deployment hit plus related JWT context |
| `keycloak OAuth` | `auth.md`, `main.py` | -0.029 | finds both conceptual and implementation evidence |
| `postgresql database` | `README.md`, `main.py` | 0.025 | finds decision and implementation |
### Wake-up Context (synthetic)
- ~210 tokens total
- L0 identity placeholder
- L1 compressed project facts
- prompt-injection ready as a session wake-up payload
## Live Mining Results
Timmy later moved past the synthetic test and mined live agent context. That is the more important result for this repo.
### Live Timmy mining outcome
- **5,198 drawers** across 3 wings
- **413 files** mined from `~/.timmy/`
- wings reported in the issue:
- `timmy_soul` -> 27 drawers
- `timmy_memory` -> 5,166 drawers
- `mempalace-eval` -> 5 drawers
- **wake-up context:** ~785 tokens of L0 + L1
### Verified retrieval examples
Timmy reported successful verbatim retrieval for:
- `sovereignty service`
- exact SOUL.md text about sovereignty and service
- `crisis suicidal`
- exact crisis protocol text and related mission context
### Live before/after summary
| Query Type | Before MemPalace | After MemPalace | Delta |
|---|---|---|---|
| "authentication" | auth.md, main.py | -0.139 | Finds both auth discussion and JWT implementation |
| "docker nginx SSL" | deployment.md, auth.md | 0.447 | Exact match on deployment, related JWT context |
| "keycloak OAuth" | auth.md, main.py | -0.029 | Finds OAuth discussion and JWT usage |
| "postgresql database" | README.md, main.py | 0.025 | Finds both decision and implementation |
| Sovereignty facts | Model confabulation | Verbatim SOUL.md retrieval | 100% accuracy on the cited example |
| Crisis protocol | No persistent recall | Exact protocol text | Mission-critical recall restored |
| Config decisions | Lost between sessions | Persistent + searchable | Stops re-deciding known facts |
| Agent memory | Context window only | 5,198 searchable drawers | Large durable recall expansion |
| Wake-up tokens | 0 | ~785 compressed | Session-start context becomes possible |
### Wake-up Context
- **~210 tokens** total
- L0: Identity (placeholder)
- L1: All essential facts compressed
- Ready to inject into any LLM prompt
This is the strongest evidence in the issue: the evaluation moved from toy files to real Timmy memory material and still held up.
## Integration Potential
## Independent Verification
### 1. Memory Mining
Allegro independently reproduced the evaluation protocol.
### Allegro installation and setup
- installed `mempalace` in an isolated venv
- observed ChromaDB backend
- observed first-run embedding model download (~79MB)
- recreated the 4-file synthetic evaluation project
### Allegro before/after comparison
#### Before (grep/BM25 style)
| Query | Results | Limitation |
|---|---|---|
| `authentication` | 4 exact matches across 3 files | no ranking, no semantic context |
| `docker nginx SSL` | 7 matches across 5 files | OR-style matching, weak relevance ordering |
| `keycloak OAuth` | 5 matches across 4 files | exact keyword bias |
| `postgresql database` | 5 matches across 4 files | no cross-reference understanding |
#### After (MemPalace)
| Query | Top Result | Score | Cross-references Found |
|---|---|---:|---|
| `authentication` | `auth.md` | -0.232 | ranked related files behind it |
| `docker nginx SSL` | `main.py` | 0.073 | ranked infra-related files by relevance |
| `keycloak OAuth` | `auth.md` | -0.137 | related files surfaced as well |
| `postgresql database` | `README.md` | -0.084 | decision + implementation chain visible |
### Allegro wake-up context
- **238 tokens** generated
- identity placeholder still needed explicit setup
- confirmed there is a real compressed wake-up artifact, not just search hits
### Independent verdict
Allegro explicitly confirmed Timmy's core finding:
- semantic retrieval works
- palace structure is useful
- no cloud dependency is required
That matters because it reduces the chance that Timmy's result was a one-machine artifact.
## Operational Gotchas
The issue thread also surfaced practical constraints that matter more than the headline scores.
1. `mempalace init` is interactive even with `--yes`
- practical workaround: write `mempalace.yaml` manually
2. YAML schema gotcha
- key is `wing:` not `wings:`
- rooms are expected as a list of dicts
3. First-run download cost
- embedding model auto-download observed at ~79MB
- this is fine on a healthy machine but matters for cold-start and constrained hosts
4. Managed Python / venv dependency
- installation is straightforward, but it still assumes a controllable local Python environment
5. Integration is still only described, not fully landed
- the issue thread proposes:
- wake-up hook
- post-session mining
- MCP integration
- replacement of older memory paths
- those are recommendations and next steps, not completed mainline integration in `timmy-home`
## Recommendation
### Recommendation for this issue (#568)
**Accept the evaluation as successful and complete.**
MemPalace demonstrated:
- positive synthetic before/after improvement
- positive live Timmy mining results
- positive independent Allegro verification
- zero-cloud operation
- useful wake-up context generation
That is enough to say the evaluation question has been answered.
### Recommendation for `timmy-home` roadmap
**Do not overstate the result as “MemPalace is now the permanent uncontested memory layer.”**
A more precise current recommendation is:
1. use MemPalace as a proven pilot candidate for memory mining and wake-up experiments
2. keep the evaluation report as evidence that semantic local memory works in this stack
3. benchmark it against the current Engram direction before declaring final fleet-wide replacement
Why that caution is justified from inside this repo:
- `docs/hermes-agent-census.md` now treats **Engram memory provider** as a high-priority sovereignty path
- the issue thread proves MemPalace can work, but it does not prove MemPalace is the final best long-term provider for every host and workflow
### Practical call
- **For evaluation:** MemPalace passes
- **For immediate experimentation:** proceed
- **For irreversible architectural replacement:** compare against Engram first
## Integration Path Already Proposed
The issue thread and merged draft already outline a practical integration path worth preserving:
### Memory mining
```bash
# Mine Timmy's conversations
mempalace mine ~/.hermes/sessions/ --mode convos
# Mine project code and docs
mempalace mine ~/.hermes/hermes-agent/
# Mine configs
mempalace mine ~/.hermes/
```
### 2. Wake-up Protocol
### Wake-up protocol
```bash
mempalace wake-up > /tmp/timmy-context.txt
# Inject into Hermes system prompt
```
### 3. MCP Integration
### MCP integration
```bash
# Add as MCP tool
hermes mcp add mempalace -- python -m mempalace.mcp_server
```
### 4. Hermes Integration Pattern
- `PreCompact` hook: save memory before context compression
- `PostAPI` hook: mine conversation after significant interactions
- `WakeUp` hook: load context at session start
### Hook points suggested in the draft
- `PreCompact` hook
- `PostAPI` hook
- `WakeUp` hook
## Recommendations
These remain sensible as pilot integration points.
### Immediate
1. Add `mempalace` to Hermes venv requirements
2. Create mine script for ~/.hermes/ and ~/.timmy/
3. Add wake-up hook to Hermes session start
4. Test with real conversation exports
## Next Steps
### Short-term (Next Week)
1. Mine last 30 days of Timmy sessions
2. Build wake-up context for all agents
3. Add MemPalace MCP tools to Hermes toolset
4. Test retrieval quality on real queries
### Medium-term (Next Month)
1. Replace homebrew memory system with MemPalace
2. Build palace structure: wings for projects, halls for topics
3. Compress with AAAK for 30x storage efficiency
4. Benchmark against current RetainDB system
## Issues Filed
See Gitea issue #[NUMBER] for tracking.
Short list that follows directly from the evaluation without overcommitting the architecture:
- [ ] wire a MemPalace wake-up experiment into Hermes session start
- [ ] test post-session mining on real exported conversations
- [ ] measure retrieval quality on real operator queries, not only synthetic prompts
- [ ] run the same before/after protocol against Engram for a direct comparison
- [ ] only then decide whether MemPalace replaces or merely informs the permanent sovereign memory provider path
## Conclusion
MemPalace scores higher than published alternatives (Mem0, Mastra, Supermemory) with **zero API calls**.
PR #569 captured the first good draft of the MemPalace evaluation, but it left the issue open and the report unfinished.
For our use case, the key advantages are:
1. **Verbatim retrieval** — never loses the "why" context
2. **Palace structure** — +34% boost from organization
3. **Local-only** — aligns with our sovereignty mandate
4. **MCP compatible** — drops into our existing tool chain
5. **AAAK compression** — 30x storage reduction coming
This updated report closes the loop by consolidating:
- the original synthetic benchmarks
- Timmy's live mining results
- Allegro's independent verification
- the real operational gotchas
- a recommendation precise enough for the current `timmy-home` roadmap
It replaces the "we should build this" memory layer with something that already works and scores better than the research alternatives.
Bottom line:
- **MemPalace worked.**
- **The evaluation succeeded.**
- **The permanent memory-provider choice should still be made comparatively, not by enthusiasm alone.**

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# LAB-006 Call Log and Quote Template
Issue: #531
Purpose: capture the live calls, written confirmations, and septic cost options needed to close the issue honestly.
## County / State Call Log
### 1. NHDES Subsurface Systems Bureau
- Date:
- Time:
- Person reached:
- Phone used: 603-271-3501
- Email if follow-up requested: LRM-ARC@des.nh.gov
- Summary:
- Exact answer on whether a permitted designer is required for the 1-bedroom revision:
- Exact answer on whether owner-install is permitted for this parcel / use case:
- Exact answer on revision fee:
- Exact answer on whether moving the driveway triggers resubmission:
- Written follow-up promised? yes / no
- Reference number / email thread:
### 2. Local building / occupancy authority
- Date:
- Time:
- Office reached:
- Person reached:
- Phone:
- Summary:
- Does local occupancy sign-off require anything beyond NHDES septic approval?
- Separate permit / fee / inspection required?
- Written follow-up promised? yes / no
- Reference number / email thread:
### 3. Other agency / health / planning contact
- Date:
- Time:
- Office reached:
- Person reached:
- Phone:
- Summary:
- Key answer:
- Written follow-up promised? yes / no
- Reference number / email thread:
## Original Plan / Permit Retrieval Log
- Property address:
- Owner name searched:
- Approval number searched:
- OneStop searched? yes / no
- OneStop result:
- Archive request submitted? yes / no
- Archive request ID:
- Files received:
- Notes:
## Engineer / Designer Quote Tracker
| Vendor | Contact | Scope | Price | Lead time | Notes |
|---|---|---|---:|---|---|
| Designer 1 | | Revise approved plan to 1-bedroom | | | |
| Designer 2 | | Revise approved plan to 1-bedroom | | | |
| Designer 3 | | Revise approved plan to 1-bedroom | | | |
## Quote Tracker
| Option | Vendor / Person | Scope | Price | Lead time | Notes |
|---|---|---|---:|---|---|
| Professional install | | Full install | | | |
| Friend-with-excavator | | Excavation / install help | | | |
| Materials-only | | Tank + pipe + stone + misc. | | | |
## Materials List Draft
Use only if owner-install remains legally viable after the live calls.
- Septic tank:
- Distribution box:
- Pipe:
- Stone / leach field media:
- Fabric / protection:
- Inspection / riser components:
- Equipment rental:
- Delivery:
- Other:
## Final Yes / No Gate
- Revised 1-bedroom plan must be prepared by permitted designer: yes / no
- Owner-install permitted for this exact project: yes / no
- Revised plan fee confirmed: yes / no
- Local occupancy / building sign-off path confirmed: yes / no
- Three real quotes received: yes / no
- Best next action:

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# LAB-006 Septic Research
Issue: #531
Date: 2026-04-15
Status: public-doc research packet complete; live county/town calls and real quotes still pending
## Scope of this packet
This is a proof-oriented research packet built from public New Hampshire sources.
I did not claim any phone call, written county confirmation, engineer quote, or filed revision that did not actually happen.
What this packet does provide:
- official public source links
- a clearer answer on designer-vs-owner responsibilities
- the records lookup path for the existing approved septic plan
- the state contact point to call next
- a structured call and quote template for the live follow-up work
## Most important findings
### 1. A revised septic application in New Hampshire still appears to require a permitted designer
Official NHDES septic systems page:
- https://www.des.nh.gov/land/septic-systems
Direct language from the page:
- "Plans for proposed septic systems must be designed, prepared and submitted by a permitted New Hampshire septic system designer."
Implication for LAB-006:
- downsizing the approved plan from 3-4 bedroom to 1-bedroom is probably not a self-drawn paper edit if it changes the approved septic design/load assumptions
- moving the driveway on paper may also need designer involvement if it affects the approved layout or any required setback/field configuration
### 2. Owner-install appears possible in New Hampshire, but only in a narrow case
Official NHDES designer/installer page:
- https://www.des.nh.gov/land/septic-systems/septic-designer-or-installer
Direct language from the page:
- "Applications for individual sewage disposal systems or septic systems must be prepared by a permitted designer."
- "With the exception for homeowners installing for their primary domicile, septic systems must be constructed by a permitted installer."
Implication for LAB-006:
- public state guidance points to this answer:
- owner-install: likely YES, but only if the dwelling is the homeowner's primary domicile
- owner-designed / owner-submitted revised plan: public docs point to NO, because the application must still be prepared by a permitted designer
This is the strongest public answer I found without making the required phone calls.
### 3. The original approved septic documents should be searched in the NHDES records portal first
Official records portal / septic page:
- Septic records overview: https://www.des.nh.gov/land/septic-systems
- Subsurface OneStop portal: https://www4.des.state.nh.us/SSBOneStop/
Direct language from the septic systems page:
- "Our online Subsurface Onestop portal provides access to septic system records from 19671986 and 2016present. You can search by property owner name, address, designer, installer or approval number."
- "Records from 19862016 are currently being digitized."
- "If you cannot locate your septic record in the SSB Onestop Portal, you may submit an archive request online."
Implication for LAB-006:
- first check OneStop for the approved plan and approval number
- if the property falls into the digitization gap, file the archive request instead of guessing
### 4. Public docs point first to NHDES Subsurface Systems Bureau, not just a county office
Official contacts:
- NHDES Septic (Subsurface) forms portal: https://onlineforms.nh.gov/home/?Organizationcode=NHDES_Septic
- NHDES Contact page: https://www.des.nh.gov/contact
Public contact details shown in NHDES materials:
- Subsurface Systems Bureau phone: 603-271-3501
- LRM Application Receipt Center email: LRM-ARC@des.nh.gov
- Mailing address: NHDES Subsurface Systems Bureau, 29 Hazen Drive, PO Box 95, Concord, NH 03302-0095
Important note:
- the issue body says to call Sullivan County Building/Health
- the public New Hampshire septic program pages point to the state Subsurface Systems Bureau for the septic application/design side
- that does NOT prove the town/county has no role in occupancy or local building sign-off
- it does mean the next call should include NHDES, not only a county office
### 5. Revised forms are required as of February 1, 2026
Official septic systems page:
- https://www.des.nh.gov/land/septic-systems
Direct language:
- "Effective February 1, 2026: All submissions must comply with the revised Administrative Rules and use the revised forms."
Implication for LAB-006:
- if a revised plan is submitted, use the current NHDES septic forms rather than any old approval packet templates
## Public-source answer to the main yes/no question
Based on the public NHDES pages reviewed today:
- Can the owner revise and submit the septic plan without a designer?
- Public-doc answer: probably NO. The application/plans must be prepared by a permitted New Hampshire septic system designer.
- Can the owner install the septic system personally?
- Public-doc answer: possibly YES, but only for a homeowner installing for their primary domicile.
This is still not the same as county/town confirmation for this exact parcel and occupancy path. That call is still required.
## Best next live actions
1. Search the existing approval in Subsurface OneStop:
- by owner name
- by property address
- by designer name if known
- by approval number if any prior paperwork exists
2. If the file is not in OneStop, submit archive request.
3. Call NHDES Subsurface Systems Bureau at 603-271-3501 and ask:
- does downsizing an already-approved 3-4 bedroom septic plan to 1-bedroom require a newly prepared plan by a permitted designer?
- if the owner intends to self-install for a primary domicile, what exact homeowner-install form/process applies?
- what fee applies to revising an existing approved plan?
- does moving the driveway on the approved drawing trigger designer resubmission, site review, or other plan revision requirements?
4. Call the local building / occupancy authority for the parcel and confirm:
- who actually signs off the occupancy permit
- whether they defer fully to NHDES for septic revision
- whether any separate local building/driveway/site paperwork is required
5. If NHDES confirms designer-prepared revision is mandatory, get a designer quote immediately instead of spending more time on owner-submittal paths.
## What I did NOT verify
I did not verify any of the following as completed facts:
- that Sullivan County itself is the final septic approval authority for this parcel
- that a revised 1-bedroom plan has already been drafted or submitted
- that owner-install is permitted for this exact property after all local conditions are applied
- the exact revision fee
- any real contractor quote
## Recommended practical interpretation
Todays public-doc evidence strongly supports this working assumption:
- design/revision work -> permitted septic designer
- physical installation -> homeowner may be able to do it for a primary domicile
- records/process/questions -> start with NHDES Subsurface Systems Bureau and OneStop
That is enough to stop guessing and start the right calls.
## Evidence links
- NHDES Septic Systems: https://www.des.nh.gov/land/septic-systems
- NHDES Septic Designer and Installer: https://www.des.nh.gov/land/septic-systems/septic-designer-or-installer
- NHDES Septic Online Forms: https://onlineforms.nh.gov/home/?Organizationcode=NHDES_Septic
- NHDES Subsurface OneStop: https://www4.des.state.nh.us/SSBOneStop/
- NHDES Contact page: https://www.des.nh.gov/contact
## Deliverables in this PR
- this research memo
- a call-log and quote-tracker template for the live follow-up work

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from pathlib import Path
REPORT = Path("reports/evaluations/2026-04-06-mempalace-evaluation.md")
def _content() -> str:
return REPORT.read_text()
def test_mempalace_evaluation_report_exists() -> None:
assert REPORT.exists()
def test_mempalace_evaluation_report_has_completed_sections() -> None:
content = _content()
assert "# MemPalace Integration Evaluation Report" in content
assert "## Executive Summary" in content
assert "## Benchmark Findings" in content
assert "## Before vs After Evaluation" in content
assert "## Live Mining Results" in content
assert "## Independent Verification" in content
assert "## Operational Gotchas" in content
assert "## Recommendation" in content
def test_mempalace_evaluation_report_uses_real_issue_reference_and_metrics() -> None:
content = _content()
assert "#568" in content
assert "#[NUMBER]" not in content
assert "5,198 drawers" in content
assert "~785 tokens" in content
assert "238 tokens" in content
assert "interactive even with `--yes`" in content or "interactive even with --yes" in content

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@@ -1,26 +0,0 @@
from pathlib import Path
REPORT = Path("reports/property/lab-006-septic-research.md")
TEMPLATE = Path("reports/property/lab-006-call-log-and-quote-template.md")
def test_lab_006_report_exists_with_official_findings():
assert REPORT.exists(), "expected septic research report to exist"
content = REPORT.read_text()
assert "LAB-006 Septic Research" in content
assert "NHDES Septic Systems" in content
assert "Applications for individual sewage disposal systems or septic systems must be prepared by a permitted designer" in content
assert "With the exception for homeowners installing for their primary domicile" in content
assert "603-271-3501" in content
assert "https://www4.des.state.nh.us/SSBOneStop/" in content
def test_lab_006_template_exists_with_call_and_quote_sections():
assert TEMPLATE.exists(), "expected call/quote template to exist"
content = TEMPLATE.read_text()
assert "County / State Call Log" in content
assert "Quote Tracker" in content
assert "Professional install" in content
assert "Friend-with-excavator" in content
assert "Materials-only" in content