Fewer late-stage source surprises
You can catch unsuitable evidence before it becomes the backbone of an IA, EE, TOK essay, or portfolio.
Feature 05
Source Checker
Check your sources before writing, so weak evidence, missing context, and source-pack problems do not quietly drag down the final work.
Subject-specific source rules for IA, EE, TOK, oral, arts, sciences, and coursework.
Flexible source rows for URLs, citations, DOI/ISBN details, interviews, surveys, datasets, and objects.
AI fetches what it can, asks only essential follow-ups, then gives a final source suitability score.
Better-source suggestions help you replace weak evidence before it becomes part of the draft.
A source check before the writing spiral begins
IB students often discover source problems too late: the article is too broad, the company document is biased, the TOK object is not specific enough, or the source pack repeats the same viewpoint.
Source Checker moves that judgment to the beginning. You add the sources you already have, Marksy reads the available evidence, applies the selected IB component profile, and tells you whether the set is strong enough to build on.
Lower input burden
Students can paste whatever identifies the source instead of completing a long intake form.
Better evidence before better writing
Strong writing depends on sources that can actually carry analysis.
How the source-checking flow works
This is the exact end-to-end flow. Each stage has one clear job, so the page takes you from your starting point to a better final performance.
Step 1
Pick the exact assessment profile
Select the subject for the citations that you want to verify.
Outcome: The AI evaluates sources against the right IB expectations instead of using generic citation advice.
Choose the exact IB assessment context before checking source fit.
Step 2
Add your sources
Paste each source. A wide range of types supported such as article, interview, dataset, TOK object, artwork, or company report.
Outcome: You keep input minimal while giving the AI enough context to reduce unnecessary follow-up questions.
Add URLs, citations, interviews, datasets, objects, or notes one source at a time.
Step 3
Review the final source verdict
Marksy fetches public pages when possible, asks for missing context only if needed, and returns a score with risks and replacement ideas.
Outcome: You know which sources to keep, which need context, and which ones should be replaced before drafting.
Get a final score, source risks, and better source directions before writing.
What This Changes in Your Prep Routine
Fewer late-stage source surprises
You can catch unsuitable evidence before it becomes the backbone of an IA, EE, TOK essay, or portfolio.
- Flags weak source types early
- Checks source-pack balance, not just single links
- Separates background reading from evidence you can analyze
Lower input burden
Students can paste whatever identifies the source instead of completing a long intake form.
- URLs, DOI/ISBN details, citations, notes, and objects all work
- Auto-detect remains the default
- Follow-ups appear only when they materially affect the verdict
Better evidence before better writing
Strong writing depends on sources that can actually carry analysis.
- Replace weak sources before drafting
- Find stronger directions for missing evidence
- Build a source set that supports the assessment question
Frequently Asked Questions
Is Source Checker only for URLs?
No. You can add URLs, citations, DOI or ISBN details, book titles, interviews, surveys, datasets, artworks, TOK objects, or source notes.
Does it officially approve my sources?
No. It gives subject-aware suitability guidance and flags likely risks, but your teacher and school instructions remain the final authority.
Why choose a source type if Auto-detect exists?
Auto-detect keeps the flow fast. Choosing a type can improve context for ambiguous sources like interviews, surveys, fieldwork, TOK objects, and arts evidence.
Keep This Momentum Going
When the evidence is stronger at the start, the writing has less to fight against later.
Combine source checker with Marksy's full IB toolkit so your prep stays consistent from your first draft to final submission.