64 Types: personality test
Free science-based personality test: 64 types from Big Five + HEXACO, with cited profiles.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'list_types' description lacks action verbin list_types
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"64types": {
"url": "https://64types.app/api/mcp"
}
}
}Remote endpoints
https://64types.app/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (6)
🟢get_test_questions
The 62 public-domain IPIP statements of the free 64 Types personality test (Big Five + HEXACO Honesty-Humility), with the 1-5 answer scale. Ask the user each one, then call score_test.
Input Schema
{
"type": "object",
"properties": {}
}🟢score_test(answers)
Score the user's answers to get their 64 Types type (e.g. INTJ-CM), trait percentiles against open norms (~20,000 people), borderline letters, a plain-language summary and a shareable result link.
Input Schema
{
"type": "object",
"properties": {
"answers": {
"type": "object",
"description": "Question id from get_test_questions -> the user's answer, 1 (very inaccurate) to 5 (very accurate)",
"additionalProperties": {
"type": "integer",
"minimum": 1,
"maximum": 5
}
}
},
"required": [
"answers"
]
}🟢get_type_profile(code)
Research-backed profile of a type: a 4-letter base (INTJ) with its 4 variants, or a full 64 Types code (INTJ-CM) with traits, strengths, watch-outs, career, love and growth notes and a link.
Input Schema
{
"type": "object",
"properties": {
"code": {
"type": "string",
"description": "INTJ, or INTJ-CM"
}
},
"required": [
"code"
]
}🟢list_types
The 16 base types and 4 variants with names, taglines and links.
Input Schema
{
"type": "object",
"properties": {}
}🟢get_pricing
What is free (the test, result and every type profile) and the optional paid reports with prices and checkout links.
Input Schema
{
"type": "object",
"properties": {}
}🟢get_checkout_link(product)
Checkout link for one paid product, to hand to the user. They pay on Lemon Squeezy; the reply says what happens after payment.
Input Schema
{
"type": "object",
"properties": {
"product": {
"type": "string",
"enum": [
"deep_report",
"couple_report",
"plus_monthly",
"plus_yearly"
],
"description": "deep_report (29-facet Deep Report), couple_report, plus_monthly or plus_yearly"
}
},
"required": [
"product"
]
}Community
Evidence