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+++ b/README.md
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 ## Overview
 
 Courgette is a homegrown Forgejo/Act compatible runner (or aspires to be someday).
+
+## Featureset
+
+The first goal of this project is to reach feature parity with Github Actions's offering (see [the feature support
+tracker](./WORKFLOW_SUPPORT.md)).
+
+Once this is achieved, extensions to the format will be considered to enhance the design and fix design flaws of the original spec.
diff --git a/WORKFLOW_SUPPORT.md b/WORKFLOW_SUPPORT.md
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+# Workflow support
+
+Using [Github Actions workflow
+syntax](https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions) as a guide, here is an overview of the feature support / parity of Courgette:
+
+## Schema keys
+
+- [ ] name
+- [ ] run-name
+- [ ] on
+- [ ] permissions
+- [ ] env
+- [ ] defaults
+- [x] jobs
+  - [ ] jobs.<job_id>.name
+  - [ ] jobs.<job_id>.permissions
+  - [ ] jobs.<job_id>.needs
+  - [ ] jobs.<job_id>.if
+  - [x] jobs.<job_id>.runs-on
+  - [ ] jobs.<job_id>.environment
+  - [ ] jobs.<job_id>.concurrency
+  - [ ] jobs.<job_id>.outputs
+  - [ ] jobs.<job_id>.env
+  - [ ] jobs.<job_id>.defaults
+  - [ ] jobs.<job_id>.timeout-minutes
+  - [ ] jobs.<job_id>.strategy
+  - [ ] jobs.<job_id>.container
+  - [ ] jobs.<job_id>.continue-on-error
+  - [ ] jobs.<job_id>.services
+  - [ ] jobs.<job_id>.uses
+  - [ ] jobs.<job_id>.with
+  - [ ] jobs.<job_id>.secrets
+  - [ ] jobs.<job_id>.def
+  - [x] jobs.<job_id>.steps
+    - [ ] jobs.<job_id>.steps[*].id
+    - [ ] jobs.<job_id>.steps[*].if
+    - [ ] jobs.<job_id>.steps[*].name
+    - [ ] jobs.<job_id>.steps[*].uses
+    - [x] jobs.<job_id>.steps[*].run
+    - [ ] jobs.<job_id>.steps[*].working-directory
+    - [ ] jobs.<job_id>.steps[*].shell
+    - [ ] jobs.<job_id>.steps[*].with
+    - [ ] jobs.<job_id>.steps[*].env
+    - [ ] jobs.<job_id>.steps[*].continue-on-error
+    - [ ] jobs.<job_id>.steps[*].timeout-minutes
+
+## Behaviours
+
+- [ ] Job concurrency
+- [ ] Logging to files
+- [ ] Support Actions
+- [ ] Support built-in functions
+- [ ] Replay jobs from workflow