# amu-pgvector (pypi · amu-pgvector)

Lineage-gated agent memory tools on Postgres + pgvector, enforced by row-level security.

- Trust score: 78/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-04

## Components

- pypi · `amu-pgvector`: 78/100 (this document), [markdown](https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector.md), [page](https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector)

## Channel facts

- Registry: `pypi`
- Package: `amu-pgvector`
- Version: `0.1.3`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-04.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 0 of 6 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to sangaraju1988/amu-pgvector).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 5 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 56/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 386 tokens (~128/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 20/100
  - Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the amu-pgvector MCP server?

amu-pgvector runs locally as a PyPI package, launched with uvx amu-pgvector. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add sangaraju1988-amu-pgvector -- uvx amu-pgvector
```

### Cursor

```json
{
  "mcpServers": {
    "sangaraju1988-amu-pgvector": {
      "command": "uvx",
      "args": [
        "amu-pgvector"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "sangaraju1988-amu-pgvector": {
      "command": "uvx",
      "args": [
        "amu-pgvector"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add sangaraju1988-amu-pgvector -- uvx amu-pgvector
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sangaraju1988-amu-pgvector": {
      "type": "local",
      "command": [
        "uvx",
        "amu-pgvector"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add sangaraju1988-amu-pgvector --command uvx --arg amu-pgvector
```

### Hermes

```yaml
mcp_servers:
  sangaraju1988-amu-pgvector:
    command: "uvx"
    args: ["amu-pgvector"]
```

### Netclaw

```json
{
  "McpServers": {
    "sangaraju1988-amu-pgvector": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "amu-pgvector"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add sangaraju1988-amu-pgvector -t stdio -c uvx -a amu-pgvector
```

### Other

```json
{
  "mcpServers": {
    "sangaraju1988-amu-pgvector": {
      "command": "uvx",
      "args": [
        "amu-pgvector"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-03 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-01 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-30 (score 76, +1)

- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Stability: unverified → 0.07
- [functional] Package version: 0.1.2 → 0.1.3

### 2026-09-28 (score 75)

First indexed and scored.

## MCP tools (3)

### `amu_search` (~105 tokens)

Search lineage-gated Analytical Memory Units (AMUs) by semantic similarity to a natural-language query. Results are lineage-gated by Postgres row-level security under this server's own Postgres role: an Analytical Memory Unit (AMU) is only ever returned if every sensitive column touched by its derivation is in this role's permitted set. This tool cannot bypass that gate.

Input parameters:

- `k` (integer)
- `metric_name`
- `query` (string, required)

Output parameters:

- `result` (array)

### `amu_record` (~100 tokens)

Record a new Analytical Memory Unit (AMU). Lineage is extracted from the executed `sql` (ground truth), never self-reported. Requires an amu_writer-member Postgres role -- other roles get a Postgres permission error, not a silent no-op.

Input parameters:

- `description` (string, required)
- `metric_name` (string, required)
- `owner_department` (string, required)
- `sql` (string, required)
- `value` (object, required)

### `amu_check_conflict` (~84 tokens)

Check whether another department has already recorded a conflicting definition of the same metric_name (same name, different derivation / definition_hash). Returns only department names and hashes -- never values or lineage -- so this cannot become a side channel around the gate.

Input parameters:

- `definition_hash` (string, required)
- `metric_name` (string, required)
- `owner_department` (string, required)

Output parameters:

- `result` (array)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector#diagnostics

## Score history

- 2026-10-04: 78
- 2026-10-03: 78
- 2026-10-02: 77
- 2026-10-01: 77
- 2026-09-30: 76
- 2026-09-29: 75
- 2026-09-28: 75

## Common questions

### What is the amu-pgvector MCP server?

amu-pgvector is an MCP server listed in the public MCP registry as io.github.sangaraju1988/amu-pgvector. Lineage-gated agent memory tools on Postgres + pgvector, enforced by row-level security. This page covers its PyPI package (amu-pgvector).

### Is the amu-pgvector MCP server safe to use?

amu-pgvector scores 78 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 October 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the amu-pgvector MCP server expose?

amu-pgvector exposes 3 tools: amu_search, amu_record, amu_check_conflict. Their descriptions and schemas cost roughly 289 tokens of context every time the server is loaded.

### Is the amu-pgvector MCP server still maintained?

amu-pgvector is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the amu-pgvector MCP server under?

amu-pgvector declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/amu-pgvector/
- Socket report: https://socket.dev/pypi/package/amu-pgvector
- Repository: https://github.com/sangaraju1988/amu-pgvector
- Changelog RSS feed: https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector.xml
- Changelog JSON feed: https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector.json
- HTML version of this page: https://verifymcp.io/servers/sangaraju1988-amu-pgvector/amu-pgvector