General research
Retraction checker
Find retracted papers, corrections and expressions of concern in any list of DOIs.
2 credits / call|check_retractions
One call checks up to 100 DOIs.
Once connected, say this to your agent
Check my reference list for retracted or corrected papers.
Or try it free on the web, no connection needed →SourcesRetraction WatchCrossref
Works withClaude · ChatGPT · Codex · Cursor · Gemini CLI · REST API
Toolscheck_retractions
Example
YOU SAY TO YOUR AGENT
Have either of these two papers been retracted or corrected?
On the right: the call your agent makes and the reply it got on 2026-10-13, shortened to the first records and a few of their fields.
check_retractions({
"dois": [
"10.1016/S0140-6736(97)11096-0",
"10.1038/nature14539"
]
})
{
"summary": "2 DOIs checked: 1 retracted, 0 with an expression of concern, 0 corrected, 1 with no notice, 0 not found.",
"records": [
{
"title": "Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children",
"url": "https://doi.org/10.1016/s0140-6736(97)11096-0",
"source": "crossref",
"data": {
"status": "retracted",
"notices": [
{
"kind": "correction",
"noticeDoi": "10.1016/s0140-6736(04)15715-2",
"date": "2004-03-06"
},
{
"kind": "retraction",
"noticeDoi": "10.1016/s0140-6736(10)60175-4",
"date": "2010-02-06"
}
],
"year": 1998,
"journal": "The Lancet"
}
},
{
"title": "Deep learning",
"url": "https://doi.org/10.1038/nature14539",
"source": "crossref",
"data": {
"status": "no_notice",
"notices": [],
"year": 2015,
"journal": "Nature"
}
}
],
"credits_used": 2
}What you get
- Retraction and correction notices with dates
- Links to the notice and the reason
Good fit
- Literature reviews and meta-analyses
Not for
- Detecting misconduct that hasn’t been reported
Similar capabilities
Frequently asked questions
Your agent calls check_retractions over MCP. ScholarMuse queries Retraction Watch, Crossref and returns records, each with its source, licence and a link you can check.
No. It costs 2 credits per call, charged only when the call succeeds. One call checks up to 100 DOIs. A new account gets 50 credits once, valid for 30 days. The web version, Retraction checker, is free without an account, 5 runs a day.
Claude, ChatGPT, Codex, Cursor, Gemini CLI and any other client that supports MCP.
Yes. The same tools (check_retractions) are available over the REST API.