The RAMESES (Realist And MEta-narrative Evidence Syntheses: Evolving Standards) project aims to develop preliminary publication standards for realist syntheses, a method that explains the success, failure, or mixed fortunes of complex interventions. The project involved collating existing literature, conducting a three-round online Delphi method with experts, and providing real-time support to ongoing syntheses. The resulting standards include 19 key items covering aspects such as title, abstract, rationale, objectives, methods, data extraction, analysis, results, and discussion. These standards aim to enhance the transparency and rigor of realist syntheses, ensuring that users can assess the quality and relevance of the reviews. The standards are intended to guide researchers, authors, editors, and policymakers in reporting realist syntheses effectively.The RAMESES (Realist And MEta-narrative Evidence Syntheses: Evolving Standards) project aims to develop preliminary publication standards for realist syntheses, a method that explains the success, failure, or mixed fortunes of complex interventions. The project involved collating existing literature, conducting a three-round online Delphi method with experts, and providing real-time support to ongoing syntheses. The resulting standards include 19 key items covering aspects such as title, abstract, rationale, objectives, methods, data extraction, analysis, results, and discussion. These standards aim to enhance the transparency and rigor of realist syntheses, ensuring that users can assess the quality and relevance of the reviews. The standards are intended to guide researchers, authors, editors, and policymakers in reporting realist syntheses effectively.