diff --git a/UseCases.mdwn b/UseCases.mdwn
index 45c8a20a4aec34ee7ebe696cd57d89ba4d68bf9f..70cacd807cbc77458012b4b67bd4a9a8511984f8 100644
--- a/UseCases.mdwn
+++ b/UseCases.mdwn
@@ -17,3 +17,4 @@ You should add your use case as a subpage of the [[UseCases]] page, to create a
 - [[Collaborating]]
 - [[Fund Accounting|UseCases/FundAccounting]]
 - [[Double-entry Accounting|UseCases/DoubleEntryAccounting]]
+- [[API|UseCases/API]]
diff --git a/UseCases/API.mdwn b/UseCases/API.mdwn
new file mode 100644
index 0000000000000000000000000000000000000000..b34d7dc34adcbfec3b5b866752f421f4bc5647df
--- /dev/null
+++ b/UseCases/API.mdwn
@@ -0,0 +1,13 @@
+# API
+
+As a developer, it's essential that I have access to a clearly documented API
+(at least) to read and (possibly) to write/update the financial data.
+
+Specifically, the need to generate reports and analyze data in new ways is
+essential, and while many systems try to give some sort of "report builder",
+which are perhaps useful for some needs, are never adequate to foresee every
+type of necessary issue.
+
+The API should allow for not only custom reports, but the ability to generate
+a programmatic analysis.  For example, this sort of API would be used to
+compute the [[public support test for USA 501(c)(3) organizations|UseCases/PublicSupportTest]].