IA, EE, TOK, oral and coursework sources

Check your IB sources before you start writing

Paste a source and choose your assignment. Marksy checks who made it, when it was published, whether you have enough variety, and what might be missing.

Check a sourceOpen my saved checks

What makes this different

Checks 31 different IB subjects and assignments, so the questions change based on what you are writing.

Checks your whole source list, not only one link, so it can spot repeated publishers, missing primary data, and source-count problems.

Understands Business IA documents, Economics IA articles, History IA OPVL sources, TOK objects, media assets, and more.

Suggests what to search for when a source is weak, so you know what to find next.

AI source auditor

Pick a checker, then add sources

Marksy reads the links or source notes you provide, applies the selected IB assessment profile, and only stops for clarification when the score depends on it.

1Profile
2Sources
3Clarify
4Score

Individuals and Societies

Sciences

Languages

Arts

Mathematics

Core

Find the rules for your assignment