Memory Vault by MihaiBuilds MCP Server
Local-first AI memory layer with hybrid search. Postgres + pgvector. Self-hosted, MIT.
Publisher claimed. No tool list reported, and Pod has not connected to this server.
Status
Pod has not dialled Memory Vault by MihaiBuilds yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.
Connect
Published as ghcr.io/mihaibuilds/memory-vault-mcp:1.4.0 on oci. Runs locally.
Reviewed GitHub reports
12 GitHub reports passed Pod's relevance review. This can include external user reports, maintainer-confirmed bugs, and concrete feature gaps. It is evidence to inspect, not a count of distinct defects. Showing 9.
Most discussed
[Bug]: forget tool soft-deletes only — no compaction path causes unbounded storage growth
What happened?
The forget tool performs a soft-delete: it sets importance to 0 and marks the chunk in metadata, but the row remains in the database permanently. The docstring notes that chunks "stay in the database for potential recovery," which is a reasonable design intent — but there is currently no recovery tool exposed via MCP, and no compaction or vacuum mechanism either. The result is all cost and no benefit: every forgotten chunk is dead weight that accumulates indefinitely. In the
Read the thread · 2026-07-14 · closed · external user · 4 comments
[Feature]: Add to MCP Server ability to create, delete, list, status pgvector memory spaces
What problem are you trying to solve?
For example memory-vault has spaces (namespaces), and recall filters by them: recall(query, spaces=["projectA"]) like default. let mcp manage namespaces so we can create separate memories on a per project basis
Proposed solution (optional)
No response
Alternatives you've considered
No response
Which tier should this land in?
Free / open-source core
Pre-flight
- I checked the README's Limitations section and this isn't a
Read the thread · 2026-06-19 · open · external user · 2 comments
[Bug]: diagnose status.txt fails on pip-installed deployments (ModuleNotFoundError: No module named 'src')
What happened?
The diagnose tool bundles a status.txt intended to contain a live memory_status snapshot (chunk counts per space, DB health, embedding model, etc.). On any pip-installed deployment, that file instead contains a Python traceback:
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "...\Scripts\memory-vault.exe\__main__.py", line 4, in <module>
ModuleNotFoundError: No modul
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/76) · 2026-07-19 · closed · 1 comment
### [Bug]: an empty environment variable crashes at import instead of using the default
### What happens
An environment variable that is **present but empty** crashes the process at import, before anything can report a useful error.
DB_PORT="" memory-vault mcp ... File "memory_vault/config.py", line 20, in Settings db_port: int = int(os.getenv("DB_PORT", "5432")) ValueError: invalid literal for int() with base 10: ''
`os.getenv` falls back to its default only when the key is **absent**. An empty value is a legitimate value and passes straight through to `int()`.
#
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/181) · 2026-08-23 · closed · 0 comments
### MCP-only Docker image v1.0.9 crashes at startup: mcp.server.fastmcp missing (mcp 2.0.0 breaking change)
### What happened?
The `ghcr.io/mihaibuilds/memory-vault-mcp:1.0.9` image crashes at startup with:
ModuleNotFoundError: No module named 'mcp.server.fastmcp'
The MCP server never starts, so no MCP client can talk to it.
Fresh `pip install -e .` from source also hits this — same root cause.
### Root cause
`pyproject.toml` specifies `mcp>=1.28.1` unpinned. The upstream `mcp` package released **2.0.0** on 2026-07-28, which removed the `mcp.server.fastmcp` module used at [`src/memory_va
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/126) · 2026-08-07 · closed · 0 comments
### Most recent
### [Bug]: offset-aware since timestamps are relabelled instead of converted
### What happened?
Offset-aware `since` timestamps are relabelled as UTC rather than converted to UTC, shifting the instant used by search.
Both REST and MCP parse with `datetime.fromisoformat(...)` and then call `.replace(tzinfo=UTC)`:
- [REST search](https://github.com/MihaiBuilds/memory-vault/blob/a0de8c6a2de75071c411cb80685703d3424383b1/src/memory_vault/api/routers/search.py#L19-L31)
- [MCP recall](https://github.com/MihaiBuilds/memory-vault/blob/a0de8c6a2de75071c411cb80685703d3424383b1/s
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/105) · 2026-07-29 · closed · external user · 0 comments
### [Bug]: MCP remember bypasses canonical ingestion and graph extraction
### What happened?
The MCP `remember` tool bypasses the canonical ingestion path. It embeds and inserts a chunk directly, but never runs entity or relationship extraction. A memory stored through MCP is searchable while remaining absent from the knowledge-graph surfaces.
The direct insert is in [`mcp/server.py`](https://github.com/MihaiBuilds/memory-vault/blob/a0de8c6a2de75071c411cb80685703d3424383b1/src/memory_vault/mcp/server.py#L243-L319). By contrast, both file ingestion and REST text inge
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/100) · 2026-07-29 · closed · external user · 0 comments
### [Bug]: split </think> tags across SSE chunks can discard the final answer
### What happened?
The OpenAI-compatible SSE filter can discard the final answer when a closing `</think>` tag is split across response chunks.
While the parser is inside a thinking block, it clears the entire buffer whenever a complete closing tag is not present. That also discards a suffix such as `</thi` that could become a delimiter when the next chunk arrives. The following `nk>ANSWER` chunk is then still treated as reasoning and discarded too.
The behavior is in [`_stream_openai_compat`
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/98) · 2026-07-29 · closed · external user · 0 comments
### [Bug]: chat and MCP token budgets admit an oversized first result
### What happened?
The chat and MCP token-budget helpers can each admit one arbitrarily oversized search result, so their advertised budgets are not hard caps.
- Chat intentionally keeps at least one result, but never truncates that final result. One large memory can therefore exceed `_PROMPT_TOKEN_BUDGET` by orders of magnitude in [`_apply_token_budget`](https://github.com/MihaiBuilds/memory-vault/blob/a0de8c6a2de75071c411cb80685703d3424383b1/src/memory_vault/api/routers/chat.py#L149-L177).
-
[Read the thread](https://github.com/MihaiBuilds/memory-vault/issues/99) · 2026-07-29 · closed · external user · 0 comments
[See all 12 reports Pod holds for Memory Vault by MihaiBuilds](/mcp/memory-vault-by-mihaibuilds/issues).
## Firsthand observations
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