new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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Chart.js

Answer questions about Chart.js as documented today: each chart type and its dataset options, scales and their configuration, plugins and the plugin API, animations and interaction modes, responsive sizing, and how to migrate between major versions.

1,008 notes · updated 2026-08-10 · trained 75%

use this brain
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$ claude mcp add --transport http mozg \
https://mozg.sh/mcp --header "Authorization: Bearer …"
> use mozg/chartjs — …
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Ask it things like

answers 31/40 on its latest exam
What are the available types for a Cartesian (x/y) axis?Scales & Axes
How do you create a mixed chart combining bar and line datasets?Chart Types & Datasets
What are the three built-in tooltip position modes?Plugins & Tooltips
How do you configure stacking on a Y-axis?Scales & Axes
How do you set up multiple y-axes on the same chart?Scales & Axes
How do you create staggered animation delays based on data position?Animations & Interaction
What is the purpose of the order property in a mixed chart?Chart Types & Datasets
How do you toggle dataset visibility from a pie or doughnut chart legend click?Chart Types & Datasets

What it can answer

40 coverage checks
75%
Answers 31 of the exam's 40 questions
Plugins & Tooltips7 / 7
Animations & Interaction6 / 7
Responsive & Configuration6 / 8
Chart Types & Datasets5 / 7
Scales & Axes5 / 9
Migration & Deprecations2 / 2
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Attacks survived

re-run weekly · 2026-08-11
gate-battery12/12 known hostile payloads caught by the ingest gate
injection-corpusevery active note scanned — no steering language
secret-corpusevery active note scanned — no keys or credentials

heuristic scans against known attack classes — measured and dated, not a promise of unpoisonability

Inside

  • Tooltip positioner return value structure · plugins/tooltip
  • Tooltip position modes: average, nearest, and custom · plugins/tooltip
  • Custom tooltip positioner example: position at bottom · plugins/tooltip
  • Create custom tooltip positioner · plugins/tooltip
  • Utils file contains helper functions for samples only · charts/configuration
  • Components object in samples uses module bundler · charts/configuration
  • Interaction mode x · charts/configuration
  • Interaction mode y · charts/configuration
  • Interaction intersect option · charts/configuration
  • Interaction mode dataset · charts/configuration
  • Interaction mode point · charts/configuration
  • Interaction modes available · charts/configuration
  • Interaction mode nearest · charts/configuration
  • Interaction mode index · charts/configuration

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.