# ChatAtlas Local (npm · chatatlas-local)

Search and read your saved ChatGPT and Claude chats, kept on your own computer.

- Trust score: 81/100 (high trust)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-24

## Components

- npm · `chatatlas-local`: 81/100 (this document), [markdown](https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local.md), [page](https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local)

## Channel facts

- Registry: `npm`
- Package: `chatatlas-local`
- Version: `0.1.2`
- 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 2026-10-24.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 0 of 1 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 100/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to hnt504/chatatlas-local).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 831 tokens (~166/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 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 ChatAtlas Local MCP server?

ChatAtlas Local runs locally as an npm package, launched with npx -y chatatlas-local. 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 hnt504-chatatlas-local -- npx -y chatatlas-local
```

### Cursor

```json
{
  "mcpServers": {
    "hnt504-chatatlas-local": {
      "command": "npx",
      "args": [
        "-y",
        "chatatlas-local"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "hnt504-chatatlas-local": {
      "command": "npx",
      "args": [
        "-y",
        "chatatlas-local"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add hnt504-chatatlas-local -- npx -y chatatlas-local
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "hnt504-chatatlas-local": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "chatatlas-local"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add hnt504-chatatlas-local --command npx --arg -y --arg chatatlas-local
```

### Hermes

```yaml
mcp_servers:
  hnt504-chatatlas-local:
    command: "npx"
    args: ["-y", "chatatlas-local"]
```

### Netclaw

```json
{
  "McpServers": {
    "hnt504-chatatlas-local": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "chatatlas-local"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add hnt504-chatatlas-local -t stdio -c npx -a -y chatatlas-local
```

### Other

```json
{
  "mcpServers": {
    "hnt504-chatatlas-local": {
      "command": "npx",
      "args": [
        "-y",
        "chatatlas-local"
      ]
    }
  }
}
```

## 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.

### 2026-10-24 (score 81, +16)

- [security improvement] Malware scan: unverified → pass
- [functional improvement] Stability: unverified → 0.03

### 2026-10-23 (score 65)

First indexed and scored.

## MCP tools (5)

### `search_chats` (~202 tokens)

Search chats

Find the user's saved conversations that mention something: chats holding every word of the query in the title or messages (each word also matches longer words it starts, accents ignored), title matches first, then newest, with the best-matching message quoted. Each result has the chat's id for read_chat.

Input parameters:

- `limit` (integer): How many chats (default 10)
- `platform` (string): Only chats from this platform: chatgpt, claude, gemini, grok, perplexity, deepseek…
- `query` (string, required): The words to look for
- `since` (string): Only chats from this date on: 2026-08-01, 2026-08 or 2026
- `tag` (string): Only chats with this tag
- `until` (string): Only chats up to and including this date: 2026-08-31, 2026-08 or 2026

### `list_chats` (~187 tokens)

List chats

Browse the user's saved conversations, newest first, by platform, date, words in the title or tag. Each line has the chat's id for read_chat.

Input parameters:

- `limit` (integer): How many (default 25)
- `offset` (integer): Skip this many (for the next page)
- `platform` (string): Only chats from this platform: chatgpt, claude, gemini, grok, perplexity, deepseek…
- `since` (string): Only chats from this date on: 2026-08-01, 2026-08 or 2026
- `tag` (string): Only chats with this tag
- `title` (string): Words the title holds
- `until` (string): Only chats up to and including this date: 2026-08-31, 2026-08 or 2026

### `read_chat` (~115 tokens)

Read a chat

Read one saved conversation, message by message, numbered from 1. Long chats come a page at a time: carry on with from_message. A very long single message comes in parts: carry on with part.

Input parameters:

- `chat` (string, required): The chat's id from search_chats or list_chats (its start is enough)
- `from_message` (integer): Start at this message (default 1)
- `part` (integer): For a message too long for one page: which part of it (default 1)

### `recent_topics` (~91 tokens)

Recent topics

What the user talked about with their AIs over a stretch of days: how many chats on each platform, the tags that come up most, and the chats' titles week by week.

Input parameters:

- `days` (integer): How far back (default 30)
- `platform` (string): Only chats from this platform: chatgpt, claude, gemini, grok, perplexity, deepseek…

### `archive_overview` (~37 tokens)

Archive overview

What the archive holds: how many chats from each platform, the dates they cover, the tags in use and when it was last imported.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local#diagnostics

## Score history

- 2026-10-24: 81
- 2026-10-23: 65

## Common questions

### What is the ChatAtlas Local MCP server?

ChatAtlas Local is an MCP server listed in the public MCP registry as io.github.hnt504/chatatlas-local. Search and read your saved ChatGPT and Claude chats, kept on your own computer. This page covers its npm package (chatatlas-local).

### Is the ChatAtlas Local MCP server safe to use?

ChatAtlas Local scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 24 October 2026. It declares no install or post-install scripts. 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 ChatAtlas Local MCP server expose?

ChatAtlas Local exposes 5 tools: search_chats, list_chats, read_chat, recent_topics, archive_overview. Their descriptions and schemas cost roughly 632 tokens of context every time the server is loaded.

### Is the ChatAtlas Local MCP server still maintained?

ChatAtlas Local is still listed as active in the MCP registry. We last reached this channel on 24 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 ChatAtlas Local MCP server under?

ChatAtlas Local 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

- npm package: https://www.npmjs.com/package/chatatlas-local
- Socket report: https://socket.dev/npm/package/chatatlas-local
- Repository: https://github.com/hnt504/chatatlas-local
- Changelog RSS feed: https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local.xml
- Changelog JSON feed: https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local.json
- HTML version of this page: https://verifymcp.io/servers/hnt504-chatatlas-local/chatatlas-local