> For the complete documentation index, see [llms.txt](https://coartraining.gitbook.io/coar-repository-toolkit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://coartraining.gitbook.io/coar-repository-toolkit/discoverability/repository-harvesters.md). # Repository harvesters There are a number of network services at the international, national, and regional levels that aggregate metadata to support discovery, analysis and reuse of content in repositories. The services differ based on their objectives and scope, but they all harvest metadata (and sometimes full text) from repositories in order to improve discovery of content. Depending on what type of repository you maintain, you will want to ensure that your repository is being harvested by one or more of these services. * [BASE](https://www.base-search.net) | Global | *see* [technical documentation](http://oai.base-search.net/index.html#oai-pmh-primer) | [golden rules for repo managers](https://www.base-search.net/about/en/faq_oai.php) * [CORE](https://core.ac.uk) | Global | *see* [technical documentation](https://core.ac.uk/join) * [Chinese IR Grid](http://www.irgrid.ac.cn/) | China * [JPCOAR](https://jpcoar.repo.nii.ac.jp) | Japan * [LA Referencia](http://www.lareferencia.info/en/) | Latin America | *see* [technical documentation](http://www.lareferencia.info/en/services/tecnologia) (note - LA Referencia harvest from 9 national nodes in Latin America, that, in turn, provide harvesting services for the local repositories in each region) * [Sistema National de Repositorios Digitales](http://repositoriosdigitales.mincyt.gob.ar:8380/dnet-web-generic/) | Argentina * [oasisbr](http://oasisbr.ibict.br/vufind/) | Brazil * [Repositorio Institutional Conicyt](http://informacioncientifica.cl/repo/) | Chile * [Systema National Acceso Abierto Conocimiento Colombia](http://190.242.114.6:8080/web/guest/busqueda-basica) | Colombia * [El Repositorio Nacional Kímuk](http://kimuk.conare.ac.cr/) | Costa Rica * [Red de Repositorios de Acceso Abierto del Ecuador](http://rraae.org.ec/) | Ecuador * [Repositorio digital de ciencia y cultura de El Salvador](http://www.redicces.org.sv/jspui/) | El Salvador * [REMERI: Red Mexicana de Repositorios Institucionales](http://www.remeri.org.mx/portal/index.html) | Mexico * [ALICIA: Acceso Libre a Información Cientifica para Innovación](http://alicia.concytec.gob.pe/vufind/) | Peru * [OpenAIRE](https://www.openaire.eu/search/find?keyword=) | Europe | *see* [technical documentation](https://guidelines.openaire.eu/en/latest/literature/use_of_oai_pmh.html) * [RCAPP](https://www.rcaap.pt) | Portugal * [SHARE](https://share.osf.io) | United States * [Recolecta](https://buscador.recolecta.fecyt.es) | Spain --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://coartraining.gitbook.io/coar-repository-toolkit/discoverability/repository-harvesters.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.