# The Landscape of Toxicity: An Empirical Investigation of Toxicity on GitHub

arXiv: https://arxiv.org/abs/2502.08238 · HTML: https://mlsanity.com/paper/2502.08238/

## Key facts

- Cited by 2 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 12 Feb 2025.

## Built on by (most cited first, 2 of 2)

- [How AI Coding Agents Communicate: A Study of Pull Request Description Characteristics and Human Review Responses](https://mlsanity.com/paper/2602.17084/) (2026)
- [PatchHolmes: Agentic Patch Retrieval via Listwise Selection](https://mlsanity.com/paper/2609.38807/) (2026)

## Abstract (arXiv)

Toxicity on GitHub can severely impact Open Source Software (OSS) development communities. To mitigate such behavior, a better understanding of its nature and how various measurable characteristics of project contexts and participants are associated with its prevalence is necessary. To achieve this goal, we conducted a large-scale mixed-method empirical study of 2,828 GitHub-based OSS projects randomly selected based on a stratified sampling strategy. Using ToxiCR, an SE domain-specific toxicity detector, we automatically classified each comment as toxic or non-toxic. Additionally, we manually analyzed a random sample of 600 comments to validate ToxiCR's performance and gain insights into the nature of toxicity within our dataset. The results of our study suggest that profanity is the most frequent toxicity on GitHub, followed by trolling and insults. While a project's popularity is positively associated with the prevalence of toxicity, its issue resolution rate has the opposite association. Corporate-sponsored projects are less toxic, but gaming projects are seven times more toxic than non-gaming ones. OSS contributors who have authored toxic comments in the past are significantly more likely to repeat such behavior. Moreover, such individuals are more likely to become targets of toxic texts.