diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
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+++ b/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Contributions are welcome through GitHub pull requests.
+
+## Proposing changes
+
+All changes to the default branch should be made through a pull request.
+
+1. Create a branch for the change.
+2. Keep the change focused and include appropriate tests or documentation.
+3. Run the relevant build, test, and formatting checks locally.
+4. Open a pull request explaining the purpose of the change, how it was
+   verified, and any related issues.
+
+## Review and merge
+
+Pull requests should be reviewed and all required CI checks must pass before
+they are merged.
diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,6 +1,15 @@
 # Reccaster
 
-Reccaster is an EPICS module to facilitate the communication between IOCs and [recceiver](https://github.com/ChannelFinder/recceiver). Before `iocInit`, reccaster will publish all records and their metadata to recceiver.
+This repository is still being set up as part of splitting the original
+[RecSync project](https://github.com/ChannelFinder/recsync) into separately
+versioned implementations and a shared protocol specification.
+
+Until that migration is complete, the historical
+[RecCeiver server](https://github.com/ChannelFinder/recsync/tree/master/server)
+remains available in the original repository.
+
+Reccaster is an EPICS module that facilitates communication between IOCs and
+servers implementing the RecSync protocol.
 
 ## IOC Shell Functions and Variables