# Flyn (remote · www.flyn.to)

Create, edit and analyse short links and QR codes. OAuth sign-in works on the free plan.

- Trust score: 90/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `www.flyn.to`: 90/100 (this document), [markdown](https://verifymcp.io/servers/to-flyn-mcp/www.md), [page](https://verifymcp.io/servers/to-flyn-mcp/www)

## Channel facts

- Endpoint: `https://www.flyn.to/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-09-20.

- **Endpoint Security**: 94/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 64/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2874 tokens (~359/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **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.
  - All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

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

Flyn is a hosted endpoint at https://www.flyn.to/mcp, 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 to-flyn-mcp 'https://www.flyn.to/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "to-flyn-mcp": {
      "url": "https://www.flyn.to/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "to-flyn-mcp": {
      "type": "http",
      "url": "https://www.flyn.to/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.to-flyn-mcp]
url = "https://www.flyn.to/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "to-flyn-mcp": {
      "type": "remote",
      "url": "https://www.flyn.to/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add to-flyn-mcp --url 'https://www.flyn.to/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  to-flyn-mcp:
    url: "https://www.flyn.to/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "to-flyn-mcp": {
      "Transport": "http",
      "Url": "https://www.flyn.to/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add to-flyn-mcp -t streamable-http -u 'https://www.flyn.to/mcp'
```

### Other

```json
{
  "mcpServers": {
    "to-flyn-mcp": {
      "type": "http",
      "url": "https://www.flyn.to/mcp"
    }
  }
}
```

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.

### 2026-09-19 (score 90, +1)

- [security] Stability: 0.97 → pass

### 2026-09-17 (score 89, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 88, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-11 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-06 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-04 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (8)

### `create_short_link` (~647 tokens)

Create short link

Create a new Flyn short link that redirects to a destination URL. Returns the link id, slug, and full short URL. The destination is scanned with Google Safe Browsing before creation. Free accounts can create 25 links per calendar month; password protection, click limits, fallback URLs, weighted rotation, and conversion tracking require Flyn Pro.

Input parameters:

- `clickLimit` (integer): Optional maximum number of human clicks before the link stops redirecting (Pro plan only).
- `conversionTracking` (boolean): Enable per-link conversion tracking (Pro plan only). The redirect then appends an unguessable click id to the destination URL, and the link reports conversions and total conversion value next to its…
- `domain` (string): Optional custom domain to mint the link on (must be a verified domain you own; Pro plan only). Omit to use your account default domain.
- `expiresAt` (string): Optional ISO 8601 datetime after which the link stops redirecting.
- `fallbackUrl` (string): Optional URL visitors are sent to after the click limit is reached (Pro plan only).
- `forwardParams` (boolean): Whether query parameters appended to the short link are forwarded to the destination. Defaults to true.
- `password` (string): Optional password required to open the link (Pro plan only).
- `rotation` (array): Optional weighted rotation of destinations, one short link splitting traffic between several URLs (Pro plan only). Up to 12 destinations; sending more is rejected rather than truncated, so nothing is…
- `slug` (string): Optional custom slug (letters, numbers, hyphens, underscores; max 100 chars). A random slug is generated when omitted.
- `tags` (array): Optional tags for organizing links (Pro plan only).
- `title` (string): Optional human-readable title for the link.
- `url` (string, required): The destination URL to shorten (https:// is assumed if no protocol is given).

### `list_links` (~168 tokens)

List links

List the account's short links with pagination, search, and filtering. Returns each link's id, slug, short URL, destination, click count, and settings, plus its conversion counters: conversionTracking (whether the link carries a click id), conversions, and conversionValueCents (total value reported for those conversions, in cents, not currency converted).

Input parameters:

- `limit` (integer): Results per page (max 100).
- `order` (string): Sort direction.
- `page` (integer): Page number, starting at 1.
- `search` (string): Optional text search across slug, destination URL, and title.
- `sort` (string): Sort column.
- `status` (string): Optional status filter.
- `tag` (string): Optional: only return links carrying this tag.

### `get_link` (~58 tokens)

Get link details

Fetch one short link by its id, including destination, settings, total click count, and its conversion counters (conversionTracking, conversions, conversionValueCents).

Input parameters:

- `id` (string, required): The link id (from create_short_link or list_links).

### `update_link` (~534 tokens)

Update link

Update an existing short link. Can re-point the destination URL without changing the printed/shared short link, plus edit title, slug, tags, expiration, rotation destinations, and Pro settings. Only the provided fields are changed.

Input parameters:

- `clickLimit` (integer): Maximum human clicks before the link stops (Pro plan only).
- `conversionTracking` (boolean): Enable or disable per-link conversion tracking (Pro plan only). Enabling only makes the redirect append a click id; conversions arrive from the Flyn tag or the server postback on the destination site.
- `expiresAt` (string|null): New ISO 8601 expiration, or null to remove.
- `fallbackUrl` (string): URL served after the click limit is reached (Pro plan only).
- `forwardParams` (boolean): Forward appended query params to the destination.
- `id` (string, required): The link id to update.
- `password` (string): Set a password (Pro plan only).
- `rotation` (array): Replacement list of weighted rotation destinations (Pro plan only). This REPLACES the whole list, so read the link first and send back every destination you are keeping, each with the id it already h…
- `slug` (string): New slug (changes the short URL; the old slug stops working).
- `status` (string): Link status.
- `tags` (array): Replacement tag list.
- `title` (string): New title.
- `url` (string): New destination URL.

### `delete_link` (~40 tokens)

Delete link

Permanently delete a short link. The short URL immediately stops redirecting and this cannot be undone.

Input parameters:

- `id` (string, required): The link id to delete.

### `get_link_analytics` (~133 tokens)

Get link analytics

Fetch click events for a short link, newest first. Every plan sees timestamps and total counts; country, city, device, OS, browser, and referrer detail requires Flyn Pro (fields are null on the free plan). Free plans see the last 30 days of history. Click events carry no conversion data: for conversions and total conversion value, read the link itself with get_link or list_links.

Input parameters:

- `id` (string, required): The link id.
- `limit` (integer): Click events per page (max 200 via MCP).
- `page` (integer): Page number, starting at 1.

### `get_link_qr_code` (~315 tokens)

Get QR code for a link

Render a scannable QR code for an existing Flyn short link. Because the code encodes the short link rather than the destination, you can repoint the link later and every printed code follows, and each scan is counted as a click. The image is returned as a PNG you can look at. Custom colours and SVG output require Flyn Pro.

Input parameters:

- `bg` (string): Background colour as 6-digit hex, default #FFFFFF. Requires Flyn Pro.
- `fg` (string): Foreground colour as 6-digit hex, default Flyn green #14532D. Requires Flyn Pro.
- `format` (string): Output format: 'png' (default) or 'svg'. SVG requires Flyn Pro.
- `id` (string, required): The id of the link to render a QR code for.
- `level` (string): Error correction level: 'L', 'M' (default), 'Q' or 'H'. Higher levels survive more damage but make the symbol denser.
- `margin` (integer): Quiet zone in modules. Minimum and default is 4, as required by ISO/IEC 18004; smaller values are raised to 4 because a short quiet zone is the most common cause of a printed code failing to scan.
- `size` (integer): Maximum width in pixels, 64 to 2048, default 512. The image is the largest whole-module square that fits, so the real width is usually slightly smaller and is reported back.

### `create_qr_code` (~773 tokens)

Create QR code

Render a QR code for any of seven content types: a link, plain text, WiFi credentials, a v-card contact, a pre-filled email, a phone number, or a pre-filled SMS. The image is returned as a PNG you can look at. Nothing is stored, so this code is STATIC: it encodes the content directly and cannot be changed after it is printed. If the user wants a code they can repoint later, or wants to count scans, create a short link with create_short_link first and then call get_link_qr_code instead. Link, Text and WiFi work on every plan; V-card, E-mail, Call and SMS require Flyn Pro, as do custom colours and SVG output.

Input parameters:

- `bg` (string): Background colour as 6-digit hex, default #FFFFFF. Requires Flyn Pro.
- `email` (string): For type 'email': the recipient address.
- `emailBody` (string): For type 'email': pre-filled message body.
- `emailSubject` (string): For type 'email': pre-filled subject line.
- `fg` (string): Foreground colour as 6-digit hex, default Flyn green #14532D. Requires Flyn Pro.
- `format` (string): Output format: 'png' (default) or 'svg'. SVG requires Flyn Pro.
- `level` (string): Error correction level: 'L', 'M' (default), 'Q' or 'H'. Higher levels survive more damage but make the symbol denser.
- `margin` (integer): Quiet zone in modules. Minimum and default is 4, as required by ISO/IEC 18004; smaller values are raised to 4 because a short quiet zone is the most common cause of a printed code failing to scan.
- `phone` (string): For type 'phone': the number to dial. Include the country code, for example +15551234567, or the code only works for people dialling from the same country.
- `size` (integer): Maximum width in pixels, 64 to 2048, default 512. The image is the largest whole-module square that fits, so the real width is usually slightly smaller and is reported back.
- `smsBody` (string): For type 'sms': the pre-filled message. The sender still has to press send.
- `smsPhone` (string): For type 'sms': the number to text. Include the country code.
- `text` (string): For type 'text': the plain text to show when scanned.
- `type` (string, required): What to encode. 'url', 'text' and 'wifi' work on any plan. 'vcard', 'email', 'phone' and 'sms' require Flyn Pro.
- `url` (string): For type 'url': the URL to encode.
- `vcEmail` (string): For type 'vcard': email address.
- `vcName` (string): For type 'vcard': the person's full name. Required for a v-card.
- `vcOrg` (string): For type 'vcard': organisation or company.
- `vcPhone` (string): For type 'vcard': phone number. Include the country code, for example +15551234567.
- `vcUrl` (string): For type 'vcard': website URL.
- `wifiEnc` (string): For type 'wifi': security type. Defaults to WPA.
- `wifiHidden` (boolean): For type 'wifi': true if the network does not broadcast its SSID.
- `wifiPass` (string): For type 'wifi': the password. Omit for an open network.
- `wifiSsid` (string): For type 'wifi': the network name.

## Diagnostics

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

## Score history

- 2026-09-20: 90
- 2026-09-19: 90
- 2026-09-18: 89
- 2026-09-17: 89
- 2026-09-16: 88
- 2026-09-15: 88
- 2026-09-14: 87
- 2026-09-13: 87
- 2026-09-12: 86
- 2026-09-11: 86
- 2026-09-10: 85
- 2026-09-09: 85
- 2026-09-08: 84
- 2026-09-07: 84
- 2026-09-06: 84
- 2026-09-05: 83
- 2026-09-04: 83
- 2026-09-03: 82
- 2026-09-02: 82
- 2026-09-01: 81
- 2026-08-31: 81
- 2026-08-30: 80
- 2026-08-29: 80
- 2026-08-28: 79
- 2026-08-27: 79
- 2026-08-26: 78
- 2026-08-25: 76
- 2026-08-24: 75
- 2026-08-23: 75
- 2026-08-22: 74

## Common questions

### What is the Flyn MCP server?

Flyn is an MCP server listed in the public MCP registry as to.flyn/mcp. Create, edit and analyse short links and QR codes. OAuth sign-in works on the free plan. This page covers its hosted endpoint (https://www.flyn.to/mcp).

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

Flyn scores 90 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 Flyn MCP server expose?

Flyn exposes 8 tools: create_short_link, list_links, get_link, update_link, delete_link, and 3 more. Their descriptions and schemas cost roughly 2,668 tokens of context every time the server is loaded.

### Does the Flyn MCP server require authentication?

Yes. Flyn asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Flyn MCP server still maintained?

Flyn is still listed as active in the MCP registry. We last reached this channel on 20 September 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://www.flyn.to/mcp
- Website: https://www.flyn.to/ai
- Changelog RSS feed: https://verifymcp.io/servers/to-flyn-mcp/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/to-flyn-mcp/www.json
- HTML version of this page: https://verifymcp.io/servers/to-flyn-mcp/www