Pendar
Measures the size and growth of a research field, traces a paper's impact and checks reference lists.
What Pendar can do in ChatGPT
Read the shape of a research field.
Field Survey
Paper counts, growth trends and top countries for a topic.
Reading Shortlist
See which papers on a topic to read first.
Citation Impact
Trace who cites a paper and whether interest is growing.
Reference Check
Confirm each reference exists and is described correctly.
Retraction Flags
Spot retracted papers in a bibliography.
You stay in control
You approve access, and you can disconnect Pendar at any time.
Apps 1
What Pendar does in ChatGPT
The Pendar plugin shows you the overall shape of a research field from inside ChatGPT. Name a subject and it counts the papers written on it. It also says if research on it is growing or flattening out, which fields and countries publish most, and where to start reading. Counts come from the full collection, not a sample.
Give it a single paper and it follows what happened after it was published. You can see whether citations are growing or fading, which fields picked the work up, and whether companies or universities build on it more. That helps you tell a paper that is gaining weight from one that peaked long ago.
Paste a bibliography and Pendar checks each entry against the published record: does the paper exist, is it described correctly, and was it retracted. When it cannot find a reference it marks it as unverified instead of guessing a near match, which helps with references written by AI tools.
Built-in skills
The listing says Pendar comes with 3 skills. Skills are ready-made instructions ChatGPT can use for a specific job.
- Survey a Research Field
- Trace Citation Impact
- Verify Citations
Who it is for
- Researchers planning a new project
- Grant writers sizing up a field
- Editors checking reference lists
How to add Pendar to ChatGPT
- Open the Pendar listing in ChatGPT ↗.
- Click Install plugin.
- Sign in to your Pendar account when asked and approve the access it requests.
- Start a chat and ask for what you need, mentioning Pendar if ChatGPT does not pick it up.
- To stop, disconnect Pendar under apps in your ChatGPT settings.
Questions about Pendar
What is the Pendar ChatGPT plugin?
The Pendar plugin shows you the overall shape of a research field from inside ChatGPT. Name a subject and it counts the papers written on it. It also says if research on it is growing or flattening out, which fields and countries publish most, and where to start reading. Counts come from the full collection, not a sample. It is listed in ChatGPT's plugin marketplace under Scientific Research.
What can I ask Pendar to do in ChatGPT?
For example: "How many papers exist on CRISPR gene editing and is output growing?", "Which fields cite this DOI most, industry or academia?", "Check whether the papers in my reference list are real and not retracted". It also comes with built-in skills such as Survey a Research Field, Trace Citation Impact and Verify Citations.
Who makes the Pendar plugin for ChatGPT?
The ChatGPT listing names Pendarlabs as the developer. The version listed on 8 October 2026 was 2.0.0.
How do I add Pendar to ChatGPT?
Open the Pendar listing in ChatGPT, click Install plugin, sign in to your Pendar account and approve the access it asks for. Then ask for what you need in a chat, mentioning Pendar if ChatGPT does not pick it up.
Can Pendar change things in my account, or only read?
Every tool is read-only. It looks up published records and reports what it finds without changing anything.
Who is the Pendar plugin for?
Researchers planning a new project, grant writers sizing up a field and editors checking reference lists.
What happens if a reference cannot be found?
Pendar marks it as unverified rather than swapping in the closest real paper.
Are the numbers estimates?
The listing says figures are counted across the whole collection of papers, not estimated from a sample.
Does Pendar see my ChatGPT chats?
When Pendar is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Pendar. What Pendar does with that data falls under its own terms and privacy policy. ChatGPT keeps your training-data settings, and you can disconnect at any time.
How do I disconnect Pendar from ChatGPT?
Open your ChatGPT settings, go to apps, and disconnect Pendar. You can reconnect later from the listing.
What are alternatives to Pendar in ChatGPT?
Similar plugins in the ChatGPT marketplace include Rosalind Workbench, Undermind and Biological Sequence & Alignment Viewer. Each has its own page in this directory.
Privacy and your data
When Pendar is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Pendar. What Pendar then does with that data falls under its own terms and privacy policy, not only OpenAI's. ChatGPT keeps your training-data settings for data that comes from connected apps, and you can disconnect at any time.
Pendar privacy policy ↗Pendar terms ↗OpenAI: apps in ChatGPT ↗