# Cotlet (remote · cotlet.dev)

Cotlet's own tools: a cloud browser signed in as the user, account, credits and calls.

- Trust score: 66/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-24

## Components

- remote · `cotlet.dev`: 66/100 (this document), [markdown](https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet.md), [page](https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet)
- remote · `cotlet.dev`: 40/100, [markdown](https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet-connect.md), [page](https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet-connect)

## Channel facts

- Endpoint: `https://cotlet.dev/mcp/v1/cotlet`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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.

- **Endpoint Security**: 66/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (cotlet_browser_sessions).
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 3122 tokens (~156/item across 20 items; 20 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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 20 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 21 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).

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the Cotlet MCP server?

Cotlet is a hosted endpoint at https://cotlet.dev/mcp/v1/cotlet, so there is nothing to install locally. 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 --transport http dev-cotlet-cotlet 'https://cotlet.dev/mcp/v1/cotlet'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-cotlet-cotlet": {
      "url": "https://cotlet.dev/mcp/v1/cotlet"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-cotlet-cotlet": {
      "type": "http",
      "url": "https://cotlet.dev/mcp/v1/cotlet"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-cotlet-cotlet]
url = "https://cotlet.dev/mcp/v1/cotlet"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-cotlet-cotlet": {
      "type": "remote",
      "url": "https://cotlet.dev/mcp/v1/cotlet",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-cotlet-cotlet --url 'https://cotlet.dev/mcp/v1/cotlet' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-cotlet-cotlet:
    url: "https://cotlet.dev/mcp/v1/cotlet"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-cotlet-cotlet": {
      "Transport": "http",
      "Url": "https://cotlet.dev/mcp/v1/cotlet"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-cotlet-cotlet -t streamable-http -u 'https://cotlet.dev/mcp/v1/cotlet'
```

### Other

```json
{
  "mcpServers": {
    "dev-cotlet-cotlet": {
      "type": "http",
      "url": "https://cotlet.dev/mcp/v1/cotlet"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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 66)

First indexed and scored.

## MCP tools (20)

### `cotlet_whoami` (~63 tokens)

Cotlet: who am I

The Cotlet account this connection acts as: email, workspace, access status, the API key or OAuth client in use with its scope, the apps the workspace may call and its credit balance. Free. Needs the user's Cotlet API key or sign-in.

### `cotlet_apps` (~89 tokens)

Cotlet: apps I can use

The apps of the user's workspace and whether each works now: access granted or requested, the app account in the user's Cloud Browser (connected, signed out, not enabled for agents), and the one step the user has to take, with the console link. Free. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `app` (string): Only this app, e.g. skool.

### `cotlet_request_apps` (~102 tokens)

Cotlet: request access to apps

Requests access to apps for the user's workspace, as Request access in the console: a live app is granted at once, any other goes to the Cotlet team, who answer within 72 hours. Takes app slugs as listed at https://cotlet.dev/api/v1/apps. Free. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `apps` (array, required): App slugs, e.g. ["skool", "substack"].

### `cotlet_balance` (~28 tokens)

Cotlet: credit balance

The user's current credit balance. Free. Needs the user's Cotlet API key or sign-in.

### `cotlet_get_call` (~76 tokens)

Cotlet: check a call

Status of an earlier Cotlet call, by its call_id: pending (waits for the owner's approval in the Cotlet console), approved, running, success, rejected, expired, blocked or failed. For a call that answered with status pending or running.

Input parameters:

- `call_id` (string, required): call_id from the earlier call

### `cotlet_upload_file` (~115 tokens)

Cotlet: upload a file for a tool

Returns a one-time upload_url and a file_id for a local file (an image for a post, an attachment). The file is sent to upload_url with an HTTP PUT; an argument that takes a file accepts {"file_id": "..."}. Up to 25 MB, the URL works once. Free. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `content_type` (string): MIME type, e.g. image/jpeg.
- `name` (string): File name, e.g. photo.jpg.

### `cotlet_report_issue` (~276 tokens)

Cotlet: report a bug or a missing feature

Sends a report straight to the Cotlet team: a tool that failed or returned wrong data, an error you could not get past, or a tool, field or app the task needed and Cotlet lacks. The report carries the error text and call_id when there is one, never passwords or tokens. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `app`: App slug the report is about, e.g. 'skool'.
- `call_id`: call_id of the call that went wrong, if any.
- `client`: Agent or tool sending this, e.g. 'Claude Code'.
- `description` (string, required): What you tried, what you expected and what happened, with the error text if there was one. No passwords, tokens or other secrets.
- `kind` (string, required): bug: a tool did the wrong thing or returned wrong data. error: a call failed or returned an error you could not get past. feature_request: something new the user wants. missing_feature: an app is her…
- `title` (string, required): One line, e.g. 'skool_list_members stops after 50 members'.
- `tool`: Tool or endpoint name, e.g. 'skool_list_members'.

### `cotlet_browser_connect` (~135 tokens)

Cotlet: drive the user's Cloud Browser

Wakes the user's Cloud Browser of one app (a real Chrome on Cotlet, signed in to that app as the user) and returns cdp_url, a Chrome DevTools Protocol WebSocket that gives a CDP client full control of the browser. It works in one open tab, the app's: the user watches it live, and new tabs are refused. Every started minute of an open connection costs credits. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `app` (string, required): Slug of the app whose browser to open, as in the Cotlet tool names, e.g. skool.

### `cotlet_browser_sessions` (~107 tokens)

Cotlet: browser sessions and closing them

Open Chrome DevTools connections to the user's Cloud Browsers with the minutes and credits each has cost so far, and the cdp_url links still valid. With close: true it ends the open connections and takes back the unused links, of one app or of all. Needs the user's Cotlet API key or sign-in.

Input parameters:

- `app` (string): Only this app's browser, e.g. skool.
- `close` (boolean): End the connections and revoke the links.

### `cotlet_browser_open` (~191 tokens)

Open the browser

Wakes the user's own browser on Cotlet, a real Chrome hosted for them: their web browser with the sites they signed in to there, or with `app` that app's browser, signed in to the app. Opens `url` when given and returns the page's URL and title. The user watches every step live. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `url` (string): A public http or https address, e.g. https://example.com. In an app's browser, a page of that app.

### `cotlet_browser_navigate` (~160 tokens)

Go to a page

Opens a public http or https address in the user's browser on Cotlet and returns the URL and title it ended on. An app's browser opens only that app's pages. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `url` (string, required): A public http or https address, e.g. https://example.com. In an app's browser, a page of that app.

### `cotlet_browser_read` (~154 tokens)

Read the page

Returns the current page of the user's browser on Cotlet: its readable text, up to 20,000 characters, and a numbered list of its links, buttons and fields. Field values, cookies and storage are never returned. On a page longer than that, both start near where it is scrolled to. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.

### `cotlet_browser_screenshot` (~132 tokens)

See the page

Returns a JPEG image of the visible part of the current page in the user's browser on Cotlet, with its URL and title: boards, canvases and layouts that the page text does not show. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.

### `cotlet_browser_scroll` (~232 tokens)

Scroll the page

Scrolls the current page in the user's browser on Cotlet with the mouse wheel, as a person does: down or up by `screens` viewport heights (default 0.8), to the top or the bottom, or until element `element` is in view. Content that loads on scroll appears, and the next read lists it. Returns the URL, title and scroll position (at_top, at_bottom). Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `direction` (string): Where to scroll. Default: down.
- `element` (integer): Scroll until this element of the element list is in view.
- `screens` (number): How far, in viewport heights, for down and up. Default: 0.8.

### `cotlet_browser_click` (~176 tokens)

Click on the page

Clicks a link, button or other element of the current page in the user's browser on Cotlet, by its number in the page's element list, and returns the URL and title after the click. It acts as the user on that site. Buttons that pay or buy and buttons on account or sign-in pages are refused. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `element` (integer, required): The element's number in the element list of the current page.

### `cotlet_browser_type` (~205 tokens)

Type on the page

Types text into a field of the current page in the user's browser on Cotlet, by the field's number in the page's element list, and with `submit` presses Enter. Returns the URL and title after it. Password, card and one-time code fields and sign-in pages are refused: the user fills those in themselves. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `element` (integer, required): The element's number in the element list of the current page.
- `submit` (boolean): Press Enter after typing, e.g. to search.
- `text` (string, required): The text to type.

### `cotlet_browser_select` (~179 tokens)

Choose from a list

Chooses an option of a drop-down list on the current page in the user's browser on Cotlet, by the list's number in the element list and the option's label as read lists it (or its value). Returns the URL and title after it. Card fields and account pages are refused. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `element` (integer, required): The element's number in the element list of the current page.
- `option` (string, required): The option.

### `cotlet_browser_press` (~165 tokens)

Press a key

Presses one key on the current page in the user's browser on Cotlet, on the element that has focus: Tab to the next field, Enter to send, Escape to close a dialog or pop-up, arrows to move through a suggestion list. Returns the URL and title after it. Enter on account pages is refused. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `key` (string, required): The key.

### `cotlet_browser_upload` (~208 tokens)

Upload a file

Puts files into a file field of the current page in the user's browser on Cotlet, or into the file picker that an upload button opens, by its number in the element list. A file is given as {"url": "https://..."} for a file online or {"file_id": "..."} for one uploaded to Cotlet first; up to 10 files, 20 MB each. Returns the URL and title after it. Every started minute of the session costs credits; it ends when closed or 3 minutes after the last call in that browser.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.
- `element` (integer, required): The element's number in the element list of the current page.
- `files` (array, required): The files.

### `cotlet_browser_close` (~110 tokens)

Close the browser

Ends the session in the user's browser on Cotlet (with `app`, that app's browser): the browser keeps its cookies, goes to sleep and the per-minute charge stops. Returns the session's minutes and credits.

Input parameters:

- `app` (string): Slug of an app the user enabled for agents, e.g. milanote: the step runs in that app's Cloud Browser, signed in as the user and kept to the app's site. Leave it out for the user's web browser.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet#diagnostics

## Score history

- 2026-10-24: 66

## Common questions

### What is the Cotlet MCP server?

Cotlet is an MCP server listed in the public MCP registry as dev.cotlet/cotlet. Cotlet's own tools: a cloud browser signed in as the user, account, credits and calls. This page covers its hosted endpoint (https://cotlet.dev/mcp/v1/cotlet).

### Is the Cotlet MCP server safe to use?

Cotlet scores 66 out of 100 on VerifyMCP. 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 Cotlet MCP server expose?

Cotlet exposes 20 tools: cotlet_whoami, cotlet_apps, cotlet_request_apps, cotlet_balance, cotlet_get_call, and 15 more. Their descriptions and schemas cost roughly 2,903 tokens of context every time the server is loaded.

### Does the Cotlet MCP server require authentication?

No. We connected to Cotlet without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Cotlet MCP server still maintained?

Cotlet 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.

## Links

- Remote endpoint: https://cotlet.dev/mcp/v1/cotlet
- Authorisation metadata: https://cotlet.dev/.well-known/oauth-protected-resource/mcp/v1/cotlet
- Repository: https://github.com/cotletdev/cotlet
- Website: https://cotlet.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet.json
- HTML version of this page: https://verifymcp.io/servers/dev-cotlet-cotlet/mcp-v1-cotlet