# Servers

* [mesa-mcp](https://idss-mesa.github.io/docs/servers/mesa-mcp/) - The flagship MESA server — iRODS Data Store tools, OBO/OLS ontology AVUs, DataCite, and DuckLake metadata history.
* [mesa-ducklake](https://idss-mesa.github.io/docs/servers/mesa-ducklake/) - The AVU metadata-history library that backs mesa-mcp — DuckLake snapshots, provenance, and time-travel.
* [mesa-anyjev](https://idss-mesa.github.io/docs/servers/mesa-anyjev/) - Calibrated ontology and schema decisions; a plugin that adds the mesa_decide_* tools to mesa-mcp.
* [irods-mcp-server](https://idss-mesa.github.io/docs/servers/irods-mcp-server/) - The reference Go MCP server for the CyVerse Data Store (iRODS), registered as irods.
* [formation-mcp](https://idss-mesa.github.io/docs/servers/formation-mcp/) - Go MCP server for the CyVerse Discovery Environment via the Formation API — launch apps, monitor analyses.