MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · AI / LLM tooling

favicon.zip

By favicon.zip Verified namespace

Generate favicons (ICO, SVG, Apple touch, PWA, manifest) from SVG, text or emoji; check any site.

Website
Connect to favicon.zip
Checks passed
12 / 22

2 failed · 8 not measured

Median response
473 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
3

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
312

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 473 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name favicon-zip.

  • Pass
    Lists tools

    tools/list returned 3 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 473 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 473 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    24 of 25 parameters have a description (96%). The bar is 80%.

  • Fail
    Safety hints

    3 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-09-26T00:24:50.387829Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using favicon.zip

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http favicon-zip https://favicon.zip/mcp

Capabilities

Tools 3

check_favicon

Fetches a URL, probes every icon it declares (root favicon.ico, SVG icon, apple-touch-icon, web manifest), and grades the setup against the modern set. Follow up with generate_favicon to fix what is missing.

Discovered
generate_favicon

Generates the complete modern favicon set (favicon.ico, icon.svg, apple-touch-icon.png, PWA icons, manifest.webmanifest, favicon-setup.md with the install snippet) from an SVG, an emoji, or short text. Returns a download URL for favicon.zip plus the HTML head snippet to paste. Files follow current best practice: ICO with 16, 32, and 48px layers, a 96px Google Search icon, opaque apple-touch-icon, and a maskable icon with safe-zone padding.

Discovered
get_html_snippet

Returns the modern minimal <head> snippet for favicons, plus placement guidance. Use when the favicon files already exist and only the HTML wiring is needed.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected473 ms3

Related servers

All alternatives

Same function and industry, ranked by checks passed then median latency.

  • Responded15 / 22 checks passed
    QQQ AI Visibility Checker

    qqq.eeVerified

    Free AI visibility check: can AI crawlers read a site, and do ChatGPT, Gemini, Perplexity cite it?

    OtherAI / LLM tooling

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 78 ms · Last checked

  • Responded15 / 22 checks passed
    Claude API Pricing

    agentwright.appVerified

    Current Claude API prices and cost estimates with prompt caching and Batch API pricing.

    OtherAI / LLM tooling

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 86 ms · Last checked

  • Responded15 / 22 checks passed
    Agentery

    agentery.comVerified

    Find and compare 41,000+ AI agents, MCP servers and APIs, with daily prices and the AEPI price index

    OtherAI / LLM tooling

    • Passed: Handshake
    • Passed: Tools listed
    • Passed: Updated recently

    Median latency 88 ms · Last checked

Explore alternatives to favicon.zip