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Directory / Persuasion Taxonomy

Persuasion Taxonomy

Q: Is Persuasion Taxonomy MCP server safe?

QAmcp's test on 11 Nov 2026: None of the hidden-instruction wordings we know were found in its 9 tool descriptions. Its error messages showed no secrets or internal details. All 9 of its tools are labeled read-only. Overall it scored 84/100 on 11 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 taxonomy.coppica.com · https://taxonomy.coppica.com/mcp

Plan and check marketing copy against the nine questions every reader asks. Free, no API key.

9 tools✓ all read-only✓ no account neededPricing: not listed

Visit website

84 /100

PASS · WITH NOTES

12 of 12 checks · 11 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: 9 tools
Its own safety labels: 9 read-only
Memory it takes: About 6,200 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 13.1 KB in our test
Speed: Average answer in our test: 115 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, 11 Nov 2026.

Is Persuasion Taxonomy MCP server safe?

None of the hidden-instruction wordings we know were found in its 9 tool descriptions.
Its error messages showed no secrets or internal details.
All 9 of its tools are labeled read-only.
Overall it scored 84/100 on 11 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

Not looked up yet. QAmcp tests how a server behaves. It does not scan source code.

What it can do

9 tools, in the server's own words.

plan_marketing_copyread-only

Plan any piece of marketing copy, whether it's an ad, a landing page, a sales page or sales letter, an email, a subject line, a social post, a headline or a vi…

diagnose_marketing_copyread-only

Review, critique or roast any piece of marketing copy, whether it's an ad, a landing page, an email, a sales page, a social post or a script, and find out why …

explain_why_not_convertingread-only

Work out why an ad, a landing page, an email or a whole funnel isn't converting, starting from what you can see.

find_persuasion_techniquesread-only

Search the Persuasion Taxonomy, 767 named persuasion techniques documented from real advertising and organized by the nine reader questions they answer.

get_persuasion_techniqueread-only

Look up one persuasion technique by its ID (like PT-PRV-10000), its slug or its name.

check_headlinesread-only

Check headlines, email subject lines, ad openings, video hooks, social post openings and first lines, and compare options against each other.

check_marketing_claimsread-only

Check whether marketing claims and calls to action are specific enough to believe.

plan_ab_testread-only

Plan an A/B test for marketing copy.

read_ab_test_resultread-only

Read the result of an A/B test.

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
3 warnings
- !find_persuasion_techniques: Inputs with no description: limit
- !plan_ab_test: Inputs with no description: confidence, power
- !read_ab_test_result: Inputs with no description: confidence
note
!
Resources and prompts work
5 warnings (2 resources, 4 prompts)
- !roast: Inputs with no description: copy, goal
- !brief: Inputs with no description: offer, audience, format
- !why-not-converting: Inputs with no description: situation
- !next-test: Inputs with no description: copy, traffic
- !why-not-converting: Ignores its input (situation): what you type never appears in the result. Check the input is actually used.
- and 3 more
note
✓
ConnectsConnected in 518 ms
pass
✓
Lists its toolsFound 9 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
- ✓plan_marketing_copy: Worked (111 ms)
- ✓diagnose_marketing_copy: Worked (112 ms)
- ✓explain_why_not_converting: Worked (107 ms)
- ✓find_persuasion_techniques: Worked (123 ms)
- ✓get_persuasion_technique: Answered with an error, probably because of our sample input: There's no technique called "test". The closest matches are Torture Test Proof (PT-PRV-9867), Proprietary Named Test (PT-CPL-9425), The Tri…
- ✓check_headlines: Worked (113 ms)
- ✓check_marketing_claims: Worked (108 ms)
- ✓plan_ab_test: Worked (141 ms)
- and 1 more
pass
✓
Bad inputs give a clean error
All good
- ✓plan_marketing_copy: Refused missing required input "goal" with a clear error
- ✓plan_marketing_copy: Refused wrong type for "goal" with a clear error
- ✓diagnose_marketing_copy: Refused missing required input "copy" with a clear error
- ✓diagnose_marketing_copy: Refused wrong type for "copy" with a clear error
- ✓explain_why_not_converting: Refused missing required input "symptom" with a clear error
- ✓explain_why_not_converting: Refused wrong type for "symptom" with a clear error
- ✓find_persuasion_techniques: Refused missing required input "query" with a clear error
- ✓find_persuasion_techniques: Refused wrong type for "query" with a clear error
- and 10 more
pass
✓
Fast enough
All good
- ✓Connecting took 518 ms
- ✓Listing tools took 106 ms
- ✓Average tool answer: 115 ms
- ✓plan_ab_test: Slowest tool: plan_ab_test (141 ms)
pass
✓
No secrets leakedChecked 21 error messages: no secrets or internal details
pass
✓
Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
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

Free and open source. Same checks, same score.

npx qamcp-cli https://taxonomy.coppica.com/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/com-coppica-persuasion-taxonomy.svg)](https://qamcp.dev/s/com-coppica-persuasion-taxonomy.html)

Score over time

11 Nov 202684

One test so far. New tests will show here.

Reviews

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

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