# cogito-mem (Cogi) (pypi · cogito-mem)

Local long-term memory for Claude Code and other agents: every message kept word for word, no cloud.

- Trust score: 81/100 (high trust)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-22

## Components

- pypi · `cogito-mem`: 81/100 (this document), [markdown](https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem.md), [page](https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem)

## Channel facts

- Registry: `pypi`
- Package: `cogito-mem`
- Version: `0.2.1`
- 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 2026-10-22.

- **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 1 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to meridian21lab/cogito-mem).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 472 tokens (~236/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the cogito-mem (Cogi) MCP server?

cogito-mem (Cogi) runs locally as a PyPI package, launched with uvx cogito-mem. 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 meridian21lab-cogito-mem -- uvx cogito-mem
```

### Cursor

```json
{
  "mcpServers": {
    "meridian21lab-cogito-mem": {
      "command": "uvx",
      "args": [
        "cogito-mem"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "meridian21lab-cogito-mem": {
      "command": "uvx",
      "args": [
        "cogito-mem"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add meridian21lab-cogito-mem -- uvx cogito-mem
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "meridian21lab-cogito-mem": {
      "type": "local",
      "command": [
        "uvx",
        "cogito-mem"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add meridian21lab-cogito-mem --command uvx --arg cogito-mem
```

### Hermes

```yaml
mcp_servers:
  meridian21lab-cogito-mem:
    command: "uvx"
    args: ["cogito-mem"]
```

### Netclaw

```json
{
  "McpServers": {
    "meridian21lab-cogito-mem": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "cogito-mem"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add meridian21lab-cogito-mem -t stdio -c uvx -a cogito-mem
```

### Other

```json
{
  "mcpServers": {
    "meridian21lab-cogito-mem": {
      "command": "uvx",
      "args": [
        "cogito-mem"
      ]
    }
  }
}
```

## 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.

### 2026-10-22 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 80, +15)

- [security regression] Tool safety: pass → unverified
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Stability: unverified → 0.03
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-20 (score 65)

First indexed and scored.

## MCP tools (2)

### `memory_append` (~91 tokens)

Save to memory

Save a note to the user's long-term memory: an idea, a decision, an open question or a fact the user stated. Write it so it makes sense on its own later. It is stored word for word with the current time and cannot be edited.

Input parameters:

- `text` (string, required): The note, word for word.
- `title` (string): Optional short title, e.g. the project or topic.

### `memory_query` (~232 tokens)

Search memory

Search the user's long-term memory of earlier chats and sessions. Returns the few stored messages that best match, each with valid_at (when it was said) and a source pointing to the original message. Turn time phrases into valid_after (inclusive) and valid_before (exclusive): for 'a week ago' use a window of a few days around that date, for 'last month' that month. Today is Wednesday 2026-10-21 (UTC); the response's as_of is the current time.

Input parameters:

- `max_tokens` (integer): Reading budget for the returned text, in tokens (default 1000).
- `text` (string, required): What to look for, in the user's own words.
- `valid_after` (string): Only items said at or after this RFC 3339 time with a time zone, e.g. 2026-10-11T00:00:00Z.
- `valid_before` (string): Only items said before this RFC 3339 time with a time zone, e.g. 2026-10-11T00:00:00Z.

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem#diagnostics

## Score history

- 2026-10-22: 81
- 2026-10-21: 80
- 2026-10-20: 65

## Common questions

### What is the cogito-mem (Cogi) MCP server?

cogito-mem (Cogi) is an MCP server listed in the public MCP registry as io.github.meridian21lab/cogito-mem. Local long-term memory for Claude Code and other agents: every message kept word for word, no cloud. This page covers its PyPI package (cogito-mem).

### Is the cogito-mem (Cogi) MCP server safe to use?

cogito-mem (Cogi) scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 22 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 cogito-mem (Cogi) MCP server expose?

cogito-mem (Cogi) exposes 2 tools: memory_append, memory_query. Their descriptions and schemas cost roughly 323 tokens of context every time the server is loaded.

### Is the cogito-mem (Cogi) MCP server still maintained?

cogito-mem (Cogi) is still listed as active in the MCP registry. We last reached this channel on 22 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 cogito-mem (Cogi) MCP server under?

cogito-mem (Cogi) 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/cogito-mem/
- Socket report: https://socket.dev/pypi/package/cogito-mem
- Repository: https://github.com/meridian21lab/cogito-mem
- Website: https://meridian21lab.github.io/cogito-mem/
- Changelog RSS feed: https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem.xml
- Changelog JSON feed: https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem.json
- HTML version of this page: https://verifymcp.io/servers/meridian21lab-cogito-mem/cogito-mem