diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 00000000..7e31e585
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,19 @@
+# AGENTS.md
+
+Read all developer instructions and contribution guidelines in @README.md.
+
+## Testing your changes
+
+When changing code in `pyairtable/`, follow these steps one at a time:
+
+1. `tox -e mypy`
+2. `tox -e py314 -- $CHANGED_FILE $CORRESPONDING_TEST_FILE`
+3. `tox -e coverage`
+4. `make lint`
+5. `make docs`
+6. `make test`
+
+When changing code in `docs/`, follow these steps instead:
+
+1. `make docs`
+2. `make lint`
diff --git a/README.md b/README.md
index 5d748c63..46b512d1 100644
--- a/README.md
+++ b/README.md
@@ -29,8 +29,14 @@ Everyone who has an idea or suggestion is welcome to contribute! As maintainers,
 If it's your first time working on this library, clone the repo, set up pre-commit hooks, and make sure you can run tests (and they pass). If that doesn't work out of the box, please check your local development environment before filing an issue.
 
 ```sh
-% make setup
-% make test
+make setup
+make test
+```
+
+For a quick test run (~15s after the environments are created) use:
+
+```sh
+tox -e mypy && tox -e coverage
 ```
 
 ### Reporting a bug
@@ -50,8 +56,10 @@ Anyone who uses this library is welcome to [submit a pull request](https://githu
 
 1. Public functions/methods have docstrings and type annotations.
 2. New functionality is accompanied by clear, descriptive unit tests.
-3. You can run `make test && make docs` successfully.
-4. You have [signed your commits](https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification).
+3. The library maintains 100% test coverage.
+4. You can run `make test && make docs` successfully.
+5. No backwards-incompatible changes (unless discussed in an existing issue).
+6. You have [signed your commits](https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification).
 
 If you want to discuss an idea you're working on but haven't yet finished all of the above, please [open a draft pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-pull-requests#draft-pull-requests). That will be a clear signal that you're not asking to merge your code (yet) and are just looking for discussion or feedback.