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Slop Patterns MCP server

online · 100% uptime
by sloppatterns.com·com.sloppatterns/slop-patterns·v1.2.1·1 stars
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Checks UI code for AI-default design patterns and gives the fix. By Precious Studio.

A91/100grade A
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Safety scan
A91/100

full report

Adoption
Growing

1 stars

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Slop Patterns tools (7)

write = sends, deletes, buys or posts
  • changelogFree

    The library version, what each release added or changed, and how patterns are versioned. Use it to cite a specific version of Slop Patterns.

  • check_designFree

    Check a snippet of CSS, HTML or JSX against the Slop Patterns library and return every AI design anti-pattern it matches, with the fix for each. Covers the 101 documented patterns that have a mechanical tell. Useful for reviewing generated UI code.

  • get_patternFree

    Get one full pattern entry by id or code (e.g. "a1" or "the-unchosen-gradient"): what it looks like, why the tools produce it, who it hurts, the fix, sources.

  • list_patternsFree

    List the whole Slop Patterns taxonomy: code, id, name and one-liner for every documented AI design anti-pattern.

  • report_patternFree

    Report an AI design anti-pattern that is NOT yet in the library, for a design failure seen repeatedly that a search of the library does not find. Reports are reviewed by a human before anything is published, and published entries credit the reporter.

  • search_patternsFree

    Plain-language search across the library. "gradient headline" returns A10 Gradient Text Headline.

  • whyFree

    Return only the causal explanation for one pattern — which model, tool or template default produces it.

Public scan report

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 792ms20/20
  • Tool poisoning7 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 0 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Slop Patterns compares

Against every graded Media MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
91/100
higher than 83% of 1,337 Media servers
Tools
7
the typical Media server has 7
Tools that change things
0%
typical: 4%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Media server answers 100%
Response time
181 ms
faster than 74% of 862 Media servers
GitHub stars
1
more than 55% of 715 Media servers

What its tools let an agent do: 7 read

Install Slop Patterns in Claude Code, Cursor or VS Code

claude mcp add --transport http slop-patterns https://sloppatterns.com/mcp
Add to Cursor

What the publisher says

From the Slop Patterns repository's README, as published. We do not edit it. Read it on GitHub

Slop Patterns

A public library of AI design anti-patterns: what they look like, why the tools produce them, and what to do instead. Live at sloppatterns.com.

  • License: MIT (LICENSE). Only the pattern library is here and MIT: patterns.json, the pattern text and sources, the site, and the MCP server in api/.
  • Scanner code is not open. The Slop Score scanner at sloppatterns.com/score (browser capture, live checks and grading) is a separate project and is not included in this repo.
  • The MCP server runs at https://sloppatterns.com/mcp. No account or key. See the "For agents" page on the site.
  • The research note, The Same Page, is in research/.

Maintained by Pavithra Lamahewa at Precious Studio. Suggest a pattern from the site, or open an issue.

Use it in your AI tools

Your coding agent calls check_design on the UI it writes and fixes what it finds before you see it.

  • Claude Code (plugin, MCP plus a skill):
/plugin marketplace add pavithralamahewa/slop-patterns
  /plugin install slop-patterns@slop-patterns
  • Any MCP client: npx add-mcp https://sloppatterns.com/mcp, or add an HTTP server with that URL. It is in the official MCP Registry as com.sloppatterns/slop-patterns.
  • Cursor: add the server in Settings → MCP (type HTTP, URL above), then copy cursor/slop-patterns.mdc into .cursor/rules/.

Use the taxonomy

Every pattern has a stable code (for example A10) and a stable URL (https://sloppatterns.com/#gradient-text-headline). Codes never change meaning; when an entry is revised, its version and updated fields change.

  • All 272 patterns as data: taxonomy.json. Each entry says whether it is checked automatically (101 are; the scanner, the MCP server and the command line share 104 code rules, and 57 of them have passed a hand audit on whole pages) or needs a person.
  • Command line: npx slop-patterns check ./dist or npx slop-patterns scan example.com. See cli/.
  • One rule set: the scanner, the MCP server and the command line run the same rules.js, so they never disagree.
  • Cite it: see CITATION.cff. GitHub shows a "Cite this repository" button from it.

Nothing above is checked by us. What we check is on the safety report.

Slop Patterns: common questions

Is Slop Patterns MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the Slop Patterns safety report
How do I install Slop Patterns?
It runs remotely at sloppatterns.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Slop Patterns need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Slop Patterns maintained?
The last commit was 22 days ago (2026-10-12). The latest release is v1.2.1.
Is Slop Patterns up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Slop Patterns?
Servers from other publishers that do the same job: melta UI MCP server, Perfboard Designer MCP server and Designer Skill MCP server. Compare all Slop Patterns alternatives.
How does Slop Patterns compare with other Media MCP servers?
safety score 91/100 (higher than 83% of 1,337 Media servers); tools 7 (the typical Media server has 7); tools that change things 0% (typical: 4%. Fewer write tools means less an agent can break). Full comparison.

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