64 Types: personality test
REMOTE · 64TYPES.APP
Free science-based personality test: 64 types from Big Five + HEXACO, with cited profiles.
Available components
Last scanned (1 hour ago)
Scores higher than 60% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Education and Research
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability71
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 463 tokens (~77/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management20
- Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 0
- “get_checkout_link” reworded the description of “product” cosmetic
1 cosmetic change on this day. Switch on “Show cosmetic changes” to see it.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 30 Oct 26 +47
- Authorization: unverified → partial ▲ security
- Injection markers: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- First check of Judged manipulation: pass security
- Tool coverage: unverified → 100 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- First check of Schema quality: fail functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: pass functional
- First check of Schema quality: good functional
- First check of Tool coverage: 100 functional
- 29 Oct 26 23
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://64types.app/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=64types.app | CN=WE1,O=Google Trust Services,C=US | 17 Oct 2026 | 15 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 9c30c1471e603cd00e8b5bd2feabf534 |
| SANs: 64types.app | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of 64types.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| 64types.app. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://64types.app/api/mcp | Verified | 200 | |
| http (plaintext) | http://64types.app/api/mcp | HTTPS enforced | 301 | https://64types.app/api/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_checkout_link Get a checkout link ~71
Checkout link for one paid product, to hand to the user. They pay on Lemon Squeezy; the reply says what happens after payment.
| Name | Type | Req | Description |
|---|---|---|---|
| product | string | yes | deep_report (29-facet Deep Report), full_report (instant Full Report), couple_report, plus_monthly or plus_yearly |
No output schema declared.
No examples provided.
get_pricing Get 64 Types pricing ~33
What is free (the test, result and every type profile) and the optional paid reports with prices and checkout links.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_test_questions Get the personality test questions ~57
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 present but exposes no named parameters.
No output schema declared.
No examples provided.
get_type_profile Get a personality type profile ~77
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.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | INTJ, or INTJ-CM |
No output schema declared.
No examples provided.
list_types List all 64 types ~25
The 16 base types and 4 variants with names, taglines and links.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
score_test Score the personality test ~84
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.
| Name | Type | Req | Description |
|---|---|---|---|
| answers | object | yes | Question id from get_test_questions -> the user's answer, 1 (very inaccurate) to 5 (very accurate) |
No output schema declared.
No examples provided.
How do I install the 64 Types: personality test MCP server?
64 Types: personality test is a hosted endpoint at https://64types.app/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · 64types.app
claude mcp add --transport http zachhhhh-64types 'https://64types.app/api/mcp'
What is the 64 Types: personality test MCP server?
64 Types: personality test is an MCP server listed in the public MCP registry as io.github.zachhhhh/64types. Free science-based personality test: 64 types from Big Five + HEXACO, with cited profiles. This page covers its hosted endpoint (https://64types.app/api/mcp).
Is the 64 Types: personality test MCP server safe to use?
64 Types: personality test scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the 64 Types: personality test MCP server expose?
64 Types: personality test exposes 6 tools: get_test_questions, score_test, get_type_profile, list_types, get_pricing, get_checkout_link. Their descriptions and schemas cost roughly 347 tokens of context every time the server is loaded.
Does the 64 Types: personality test MCP server require authentication?
No. We connected to 64 Types: personality test without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the 64 Types: personality test MCP server still maintained?
64 Types: personality test is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.