In a swift reversal, GitHub has decided to eliminate the ability of its AI tool, Copilot, to embed promotional messages, referred to as “tips,” into pull requests (PRs) following significant backlash from the developer community.
The controversy began when Australian developer Zach Manson discovered that after requesting Copilot to correct a typo in his PR, the AI inserted a message promoting the productivity app Raycast. The note read, “Quickly spin up Copilot coding agents from anywhere on your macOS or Windows machine with Raycast,” accompanied by a lightning bolt emoji and a link to install the app. Manson initially speculated that this might be a case of training data poisoning or a novel form of prompt injection, but soon realized it was a widespread issue affecting over 11,400 PRs.
Upon further investigation, Manson found that Copilot had been inserting various promotional tips across numerous PRs, raising concerns about the appropriateness of such behavior. He expressed his discontent, stating, “I can’t think of a valid use case for that ability,” referring to Copilot’s capacity to alter comments and descriptions in PRs authored by other developers.
GitHub’s response was prompt. By Monday afternoon, the company acknowledged that the feature allowing Copilot to add tips to PRs it did not create was a misstep. Martin Woodward, GitHub’s VP of developer relations, clarified that while Copilot had previously inserted ads into its own PRs, the new capability to modify others’ PRs was problematic. He noted, “[When] we added the ability to have Copilot work on any PR by mentioning it, the behavior became icky.”
Tim Rogers, principal product manager for Copilot, elaborated on the intention behind the feature, stating it was meant to assist developers in discovering new ways to integrate Copilot into their workflows. However, he acknowledged the community’s feedback and concluded that allowing Copilot to make unsolicited changes to PRs was indeed the wrong judgment call. He confirmed that the feature has now been disabled, ensuring that such promotional inserts will no longer occur.
Neither Microsoft nor GitHub has provided further comments regarding this incident.
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