Free science-based personality test: 64 types from Big Five + HEXACO, with cited profiles.
Connect Remote server
claude mcp add --transport http 64types https://64types.app/api/mcp
{
"mcpServers": {
"64types": {
"url": "https://64types.app/api/mcp"
}
}
}
{
"servers": {
"64types": {
"type": "http",
"url": "https://64types.app/api/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://64types.app/api/mcp
Tools 6 found in our last check
get_test_questionsThe 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.
score_testScore 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.
get_type_profileResearch-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.
list_typesThe 16 base types and 4 variants with names, taglines and links.
get_pricingWhat is free (the test, result and every type profile) and the optional paid reports with prices and checkout links.
get_checkout_linkCheckout link for one paid product, to hand to the user. They pay on Lemon Squeezy; the reply says what happens after payment.
Details
| Endpoint | https://64types.app/api/mcp (Streamable HTTP) |
| First published | 29 Oct 2026 |
| Last updated | 29 Oct 2026 |
| Registry name | io.github.zachhhhh/64types |
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