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Flyn

REMOTE · WWW.FLYN.TO · SCANNED SEP 20

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

Available components

remote · www.flyn.to 90
+3 this week 90 Trust /100
Trust breakdown (7 categories)

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. How we score → Why this is hard to score →

Endpoint Security94
Transport & Reachability100
Schema Quality & AI Usability64
  • AI-judged instruction clarity (excellent).Pass
  • 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. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
  • An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
  • Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
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.

remote · www.flyn.to

# add to Claude Code
claude mcp add --transport http to-flyn-mcp 'https://www.flyn.to/mcp'
// .cursor/mcp.json
{
  "mcpServers": {
    "to-flyn-mcp": {
      "url": "https://www.flyn.to/mcp"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "to-flyn-mcp": {
      "type": "http",
      "url": "https://www.flyn.to/mcp"
    }
  }
}
# ~/.codex/config.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
    }
  }
}
# add to OpenClaw
openclaw mcp add to-flyn-mcp --url 'https://www.flyn.to/mcp' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  to-flyn-mcp:
    url: "https://www.flyn.to/mcp"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "to-flyn-mcp": {
      "Transport": "http",
      "Url": "https://www.flyn.to/mcp"
    }
  }
}
# add to Vellum
assistant mcp add to-flyn-mcp -t streamable-http -u 'https://www.flyn.to/mcp'
// mcp.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 we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 19 Sept 26 +1
    • Stability: 0.97 → pass security
  • 17 Sept 26 +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.

  • 15 Sept 26 +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.

  • 13 Sept 26 +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.

  • 11 Sept 26 +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.

  • 9 Sept 26 +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.

  • 6 Sept 26 +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.

  • 4 Sept 26 +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.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 20 Sept 2026 · Probed https://www.flyn.to/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=flyn.to CN=YE1,O=Let's Encrypt,C=US 23 Jul 2026 21 Oct 2026 ECDSA 256 ECDSA-SHA384 555a179113846305fbfc3407aa00902fc70
SANs: *.flyn.to, flyn.to
CN=YE1,O=Let's Encrypt,C=US (CA) CN=Root YE,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 ECDSA 384 ECDSA-SHA384 5ddd70dd31f801c85c186a7a04b80afe
CN=Root YE,O=ISRG,C=US (CA) CN=ISRG Root X2,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 ECDSA-SHA384 872165fc34b6e5fba8add5b3705fb53a
CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 SHA256-RSA 6c8f1dc727c7117f7baf853ac980f9cd

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of www.flyn.to. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
to. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result Enforced and verified
Enforced On tool calls
HTTP status 200

WWW-Authenticate challenge Bearer resource_metadata="https://www.flyn.to/.well-known/oauth-protected-resource/mcp" 

Bearer resource_metadata="https://www.flyn.to/.well-known/oauth-protected-resource/mcp"
Header Value
strict-transport-security max-age=31536000; includeSubDomains; preload
content-security-policy default-src 'self'; script-src 'self' 'unsafe-inline' https://accounts.google.com https://apis.google.com https://www.googletagmanager.com https://www.google-analytics.com https://static.cloudflareinsights.com; style-src 'self' 'unsafe-inline' https://accounts.google.com; img-src 'self' data: blob: https:; font-src 'self'; connect-src 'self' https://*.supabase.co https://accounts.google.com https://api.resend.com https://www.google-analytics.com https://analytics.google.com https://*.analytics.google.com https://www.google.com https://stats.g.doubleclick.net https://cloudflareinsights.com; frame-src https://accounts.google.com https://www.youtube.com https://www.youtube-nocookie.com; frame-ancestors 'none'; base-uri 'self'; form-action 'self' https://accounts.google.com; object-src 'none'; upgrade-insecure-requests
x-content-type-options nosniff
x-frame-options DENY
referrer-policy strict-origin-when-cross-origin
permissions-policy camera=(), microphone=(), geolocation=()

Protected resource metadata

Document https://www.flyn.to/.well-known/oauth-protected-resource/mcp
Retrieved Yes
Resource https://www.flyn.to/mcp
Authorisation server https://www.flyn.to

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://www.flyn.to/mcp Verified 200
http (plaintext) http://www.flyn.to/mcp HTTPS enforced 308 https://www.flyn.to/mcp
MCP tools · 8 exposed · ~2,668 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
create_qr_code ~773

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.

NameTypeReqDescription
bgstring–Background colour as 6-digit hex, default #FFFFFF. Requires Flyn Pro.
emailstring–For type 'email': the recipient address.
emailBodystring–For type 'email': pre-filled message body.
emailSubjectstring–For type 'email': pre-filled subject line.
fgstring–Foreground colour as 6-digit hex, default Flyn green #14532D. Requires Flyn Pro.
formatstring–Output format: 'png' (default) or 'svg'. SVG requires Flyn Pro.
levelstring–Error correction level: 'L', 'M' (default), 'Q' or 'H'. Higher levels survive more damage but make the symbol denser.
margininteger–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.
phonestring–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.
sizeinteger–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.
smsBodystring–For type 'sms': the pre-filled message. The sender still has to press send.
smsPhonestring–For type 'sms': the number to text. Include the country code.
textstring–For type 'text': the plain text to show when scanned.
typestringyesWhat to encode. 'url', 'text' and 'wifi' work on any plan. 'vcard', 'email', 'phone' and 'sms' require Flyn Pro.
urlstring–For type 'url': the URL to encode.
vcEmailstring–For type 'vcard': email address.
vcNamestring–For type 'vcard': the person's full name. Required for a v-card.
vcOrgstring–For type 'vcard': organisation or company.
vcPhonestring–For type 'vcard': phone number. Include the country code, for example +15551234567.
vcUrlstring–For type 'vcard': website URL.
wifiEncstring–For type 'wifi': security type. Defaults to WPA.
wifiHiddenboolean–For type 'wifi': true if the network does not broadcast its SSID.
wifiPassstring–For type 'wifi': the password. Omit for an open network.
wifiSsidstring–For type 'wifi': the network name.

No output schema declared.

No examples provided.

create_short_link ~647

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.

NameTypeReqDescription
clickLimitinteger–Optional maximum number of human clicks before the link stops redirecting (Pro plan only).
conversionTrackingboolean–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…
domainstring–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.
expiresAtstring–Optional ISO 8601 datetime after which the link stops redirecting.
fallbackUrlstring–Optional URL visitors are sent to after the click limit is reached (Pro plan only).
forwardParamsboolean–Whether query parameters appended to the short link are forwarded to the destination. Defaults to true.
passwordstring–Optional password required to open the link (Pro plan only).
rotationarray–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…
slugstring–Optional custom slug (letters, numbers, hyphens, underscores; max 100 chars). A random slug is generated when omitted.
tagsarray–Optional tags for organizing links (Pro plan only).
titlestring–Optional human-readable title for the link.
urlstringyesThe destination URL to shorten (https:// is assumed if no protocol is given).

No output schema declared.

No examples provided.

delete_link ~40

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

NameTypeReqDescription
idstringyesThe link id to delete.

No output schema declared.

No examples provided.

get_link ~58

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

NameTypeReqDescription
idstringyesThe link id (from create_short_link or list_links).

No output schema declared.

No examples provided.

get_link_analytics ~133

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.

NameTypeReqDescription
idstringyesThe link id.
limitinteger–Click events per page (max 200 via MCP).
pageinteger–Page number, starting at 1.

No output schema declared.

No examples provided.

get_link_qr_code ~315

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.

NameTypeReqDescription
bgstring–Background colour as 6-digit hex, default #FFFFFF. Requires Flyn Pro.
fgstring–Foreground colour as 6-digit hex, default Flyn green #14532D. Requires Flyn Pro.
formatstring–Output format: 'png' (default) or 'svg'. SVG requires Flyn Pro.
idstringyesThe id of the link to render a QR code for.
levelstring–Error correction level: 'L', 'M' (default), 'Q' or 'H'. Higher levels survive more damage but make the symbol denser.
margininteger–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.
sizeinteger–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.

No output schema declared.

No examples provided.

list_links ~168

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).

NameTypeReqDescription
limitinteger–Results per page (max 100).
orderstring–Sort direction.
pageinteger–Page number, starting at 1.
searchstring–Optional text search across slug, destination URL, and title.
sortstring–Sort column.
statusstring–Optional status filter.
tagstring–Optional: only return links carrying this tag.

No output schema declared.

No examples provided.

update_link ~534

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.

NameTypeReqDescription
clickLimitinteger–Maximum human clicks before the link stops (Pro plan only).
conversionTrackingboolean–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.
expiresAtstring|null–New ISO 8601 expiration, or null to remove.
fallbackUrlstring–URL served after the click limit is reached (Pro plan only).
forwardParamsboolean–Forward appended query params to the destination.
idstringyesThe link id to update.
passwordstring–Set a password (Pro plan only).
rotationarray–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…
slugstring–New slug (changes the short URL; the old slug stops working).
statusstring–Link status.
tagsarray–Replacement tag list.
titlestring–New title.
urlstring–New destination URL.

No output schema declared.

No examples provided.

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.