QAmcp

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Directory / Fudge for Shopify

Fudge for Shopify

Q: Is Fudge for Shopify MCP server safe?

QAmcp's test on 10 Nov 2026: None of the hidden-instruction wordings we know were found in its 57 tool descriptions. Its error messages showed no secrets or internal details. 32 of its 57 tools are labeled read-only; the others may change or send things. Overall it scored 82/100 on 10 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by fudge.ai · https://mcp.fudge.ai/mcp

Run your Shopify store with AI: drafts you approve, what to fix, and how your store is doing.

57 tools✓ no account neededPricing: on their site

See pricing →Visit website

82 /100

PASS · WITH NOTES

12 of 12 checks · 10 Nov 2026

Test it now for current results

At a glance

Runs where: On their server. What you send to it goes to them.
What you need: Nothing: it answered without a login
Tools: 57 tools
Its own safety labels: 32 read-only, 8 labeled as deleting or destroying, 17 labeled as changing things
Memory it takes: About 15,300 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 3.6 KB in our test
Speed: Average answer in our test: 769 ms

Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 10 Nov 2026.

Is Fudge for Shopify MCP server safe?

None of the hidden-instruction wordings we know were found in its 57 tool descriptions.
Its error messages showed no secrets or internal details.
32 of its 57 tools are labeled read-only; the others may change or send things.
Overall it scored 82/100 on 10 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What this test does not check

Its source code and packages.
What a tool quietly does behind the scenes, such as writing a file or calling another service.
Instructions hidden inside live tool answers. We only look for those in tool descriptions.
Hidden instructions worded in a way our list doesn't know yet.
Tools that could change something. Those are read, never run.

What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection

Known security advisories

None found in GitHub Security Advisories on 10 Nov 2026.

That means none were published there, not that there are no problems. QAmcp tests how a server behaves. It does not scan source code.

What it can do

57 tools, in the server's own words.

list_storesread-only

List the Shopify stores this connection can use.

connect_store

Create a link the merchant opens to connect another Shopify store.

get_store_overviewread-only

Read a store’s overview: business context, standing memory, Google connection, work waiting on the merchant, Plans, top recommendations and recent results.

search_design_referencesread-only

Search Fudge’s Lookbook of analysed ecommerce stores, pages and patterns.

show_design_referencesread-only

Show 3–8 Lookbook references as a gallery of screenshots, best first, each with a one-sentence note on why it suits this store.

get_store_performanceread-only

Measure the store, or a product, collection, page, article or URL given as `subject`.

get_store_insightsread-only

Read the findings and recommendations Fudge has saved for this store, most important first; narrow by area, subject, kind, date or text.

get_design_guide

Read the store’s design guide: colours, typography, spacing, components and brand voice.

search_guidesread-only

Search Fudge’s reference articles on SEO, AI discovery, conversion, merchandising, content, store design and analytics.

read_guideread-only

Read one of Fudge’s reference articles by path, such as seo/audit.md.

find_contextread-only

Search what Fudge knows about this store: memory guides, Plans, projects, findings, recommendations, recorded changes and past conversations.

remember

Save a lasting rule, decision, correction or learning to store memory.

record_change

Add a change made outside Fudge to the store’s timeline, such as ads, prices, apps, email, shipping or theme edits in Shopify, so later results can be attribut…

read_store_documentread-only

Read a store document by path: Plans (.plans), playbooks (.playbooks), memory and design guide (.memory), brand kit (.brand) and projects (.projects).

edit_store_document

Change part of a store document, such as a Plan’s brief or the design guide, by replacing exact text.

create_store_document

Create a document inside an existing Plan, such as .plans/ /brief.md, or with `replace` rewrite a whole document that was just read.

create_plan

Start a new Plan for a goal the merchant has agreed and no existing Plan covers, with a title, areas, milestones and an optional brief.

list_store_auditsread-only

List the audits Fudge can run for this store, three diagnostics and eight agent reviews, with any existing result.

run_ai_readiness_check

Run Fudge’s free AI Readiness report: whether AI assistants can find and recommend the store’s products, with a score and prioritized fixes.

run_catalog_data_audit

Run Fudge’s free AI shopping catalogue report: categories, structured data, product details and whether buyer searches find the right products.

run_knowledge_base_check

Run Fudge’s free Shopify Knowledge Base report: 15 shopper questions with the exact answers, gaps and conflicts with published information.

get_store_audit_resultread-only

Read the latest run of one free diagnostic: status, report link and, once complete, the score and top fixes.

check_page_speedread-only

Measure a store page with Google PageSpeed Insights: Lighthouse score and lab metrics, real-visitor Core Web Vitals and the largest improvement opportunities.

check_store_technicalread-only

Check the live store’s crawlability for search and AI: robots.txt rules, /llms.txt, sitemap.xml, password protection and whether products are publicly reachabl…

and 33 more

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Ready for the newest MCP version
1 warning
- !Uses an older MCP version (2025-11-25). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
note
!
Every tool is described
24 warnings
- !search_design_references: Inputs with no description: query, scope, limit, industry, pageKind
- !show_design_references: Inputs with no description: references
- !get_store_performance: Inputs with no description: metrics, breakdown, ascending, limit, offset, days, startDate, endDate, comparisonStart, comparisonEnd, compare, device
- !get_store_insights: Inputs with no description: kind, limit
- !find_context: Inputs with no description: query, where, cursor
- !create_plan: Inputs with no description: milestones
- !check_page_speed: Inputs with no description: device
- !check_catalog_data: Inputs with no description: offset, limit
- and 16 more
note
!
Fast enough
1 warning
- !search_design_references: Slowest tool: search_design_references (4.9 s): users will notice the wait
- and 3 more
note
!
Follows MCP best practices (not scored yet)
2 tips (not scored)
- !The tool list is about 70 KB (roughly 18k tokens). AI apps send it with every message, so it takes that much of the AI's memory before any work starts.
- !1 tool answers with structured data but doesn't declare its shape (outputSchema): search_design_references. If those answers change shape, nothing can catch it; with a schema, every answer is checked.
note
!
Resources and prompts work
1 warning (1 resource, 6 prompts)
- !review: Could not open it with sample inputs: MCP error -32602: Unknown review. Choose one of: SEO, AI search visibility, Conversion, Speed and Core Web Vitals, Landing page opportuniti…
- and 3 more
note
✓
ConnectsConnected in 639 ms
pass
✓
Lists its toolsFound 57 tools
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Tools work with good inputs
All good
- ✓list_stores: Worked (95 ms)
- –get_store_overview: Needs you to sign in, so it was not tested (not counted against the server)
- ✓search_design_references: Worked (4.9 s)
- ✓show_design_references: Worked (90 ms)
- –get_store_performance: Needs you to sign in, so it was not tested (not counted against the server)
- –get_store_insights: Needs you to sign in, so it was not tested (not counted against the server)
- –search_guides: Needs you to sign in, so it was not tested (not counted against the server)
- –read_guide: Needs you to sign in, so it was not tested (not counted against the server)
- and 32 more
pass
✓
Bad inputs give a clean error
All good
- –get_store_overview: Needs you to sign in, so bad inputs were not tested
- ✓search_design_references: Refused missing required input "query" with a clear error
- ✓search_design_references: Refused wrong type for "query" with a clear error
- ✓show_design_references: Refused missing required input "references" with a clear error
- ✓show_design_references: Refused wrong type for "references" with a clear error
- –get_store_performance: Needs you to sign in, so bad inputs were not tested
- –get_store_insights: Needs you to sign in, so bad inputs were not tested
- –search_guides: Needs you to sign in, so bad inputs were not tested
- and 25 more
pass
✓
No secrets leakedChecked 81 error messages: no secrets or internal details
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

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npx qamcp-cli https://mcp.fudge.ai/mcp

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Score over time

10 Nov 202682

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Fudge for Shopify, signed in with GitHub, one per person. Reviews never change the score.

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