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Turn heuristic findings into a scored markdown report with duplicates merged across evaluators.

Heuristic reportProFor researchers, designers and agencies

Pro

Needs a Pro key ($5 a month, 7 days free).

Before: what you give it

The example input, as typed in. You give it structured JSON.

title: Cancel flow
task: cancel a subscription
findings: [{"heuristic":9,"severity":3,"location":"Step 3 error","issue":"Something went wrong, no cause","effect":"people retry and then call support","fix":"name the cause and offer retry","effort":"S","evaluator":"a"},{"heuristic":9,"severity":4,"location":"Step 3 error","issue":"Something went wrong, no cause","effect":"x","fix":"y","evaluator":"b"},{"heuristic":3,"severity":2,"location":"Step 2","issue":"No way back","effect":"loses input","fix":"add a back link"}]

After: what comes back

The first lines of a real run on that input. Nothing here is edited by hand.

# Cancel flow

Task evaluated: cancel a subscription
Evaluators: 2

**Health score: 82/100.** 2 distinct findings: 1 catastrophe, 0 major, 1 minor, 0 cosmetic, 0 not a problem. The score is 100 minus a penalty of 15, 8, 3 and 1 per finding at severity 4, 3, 2 and 1; it is a way to compare two rounds of the same evaluation, not a measure of absolute quality.

## Fix first

| # | Severity | Heuristic | Where | Issue | Effect | Fix | Effort |
|---|---|---|---|---|---|---|---|
| 1 | 4 catastrophe (2 evaluators) | 9. Help users recognize, diagnose, and recover from errors | Step 3 error | Something went wrong, no cause | people retry and then call support | name the cause and offer retry | S |
| 2 | 2 minor | 3. User control and freedom | Step 2 | No way back | loses input | add a back link | n/a |
... full output on the tool page

What you get

A markdown report with a health score, a fix-first table and a breakdown by heuristic

What it cannot do

Pro only. Takes up to 300 findings you supply; the score compares rounds of one evaluation and is not an absolute measure.

Who it is for

  • Researchers
  • Designers
  • Agencies

Free and Pro

FreeNot included. This tool is part of Pro.
ProNo daily limit, 300 requests a minute.

What each plan includes

Use it from your assistant

The tool is called build_heuristic_report. Connect the server once, then ask for it by name or just describe the job. Install steps for each app.

claude mcp add --transport http designers https://designers.allthepossibles.com/mcp
curl -X POST https://designers.allthepossibles.com/api/heuristic-report -H 'content-type: application/json' -H 'authorization: Bearer YOUR_KEY' -d '{"title":"Cancel flow","task":"cancel a subscription","findings":[{"heuristic":9,"severity":3,"location":"Step 3 error","issue":"Something went wrong, no cause","effect":"people retry and then call support","fix":"name the cause and offer retry","effort":"S","evaluator":"a"},{"heuristic":9,"severity":4,"location":"Step 3 error","issue":"Something went wrong, no cause","effect":"x","fix":"y","evaluator":"b"},{"heuristic":3,"severity":2,"location":"Step 2","issue":"No way back","effect":"loses input","fix":"add a back link"}]}'

Try it here

The form starts with the same example input, so you can run it first and then swap in your own. Pro tools ask for a key.

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