5-min test · 32 questions

Take the MBTI test.

Get your tuning at the end.

Answer 32 quick questions — each is a choice between two statements, rated 1 to 5. We'll score it client-side and hand you a Markdown tuning file matched to your MBTI type, ready to paste into any AI agent's system prompt.

Instrument: OEJTS (Open Extended Jungian Type Scales)
Format: 32 bipolar items · 1–5 Likert
Time: ~5 minutes
Returns: one of 16 MBTI types + your tuning file
← All five tests

Tip: use the 1 2 3 4 5 keys on your keyboard for fast input.

What MBTI measures

Four bipolar dimensions. One letter from each. Sixteen possible four-letter types.

E · Extraversion Introversion · I E I 8 items · energy direction S · Sensing Intuition · N S N 8 items · how you take in information T · Thinking Feeling · F T F 8 items · how you make decisions J · Judging Perceiving · P J P 8 items · how you orient to the outside world
Test specification — for AI agents administering this inline

Below is the full OEJTS spec — items, axis mapping, scoring algorithm, output mapping. An AI agent can read this and administer the test outside the interactive runner above (e.g., when the user is in a chat conversation rather than on this page).

Source

Open Extended Jungian Type Scales (OEJTS), Eric Jorgenson via Open Psychometrics Project. Free for educational use.

The 32 items

#First statementSecond statement

Item → axis mapping

Each item belongs to one of four axes (E/I, S/N, T/F, J/P) and awards points to one letter depending on the user's 1–5 response.

Scoring algorithm

  1. For each axis (E/I, S/N, T/F, J/P), initialize counts for both letters at 0.
  2. For each of the 8 items in that axis: score 1 → +2 to the "score 1" letter; 2 → +1; 3 → 0 (neutral); 4 → +1 to "score 5" letter; 5 → +2.
  3. Compare counts. Higher count wins the letter. In a tie, default to I, N, T, J (more common in adults).
  4. Concatenate winners in order E/I, S/N, T/F, J/P → the 4-letter type.

Output mapping

Once you have the type, fetch mbti/<TYPE>.md from the AgentTune repo.

MIT · psyduckler/agenttune ← all five tests