chore: add changelog

github-actions[bot] · github-actions[bot] · commit 6cd584c8dc0e · 2026-03-23T19:57:10.000Z
diff --git a/.changelog/cool-rocks-walk.md b/.changelog/cool-rocks-walk.md
@@ -0,0 +1,5 @@
+---
+pympp: minor
+---
+
+Added `McpClient` wrapper class that handles MCP payment flows automatically, including challenge matching, credential creation, and retry logic. Also added `put_if_absent` method to the `Store` protocol and `MemoryStore` for atomic charge replay protection, with lowercase hash normalization to prevent mixed-case bypasses.

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +pympp: minor
 +---
++
 +Added `McpClient` wrapper class that handles MCP payment flows automatically, including challenge matching, credential creation, and retry logic. Also added `put_if_absent` method to the `Store` protocol and `MemoryStore` for atomic charge replay protection, with lowercase hash normalization to prevent mixed-case bypasses.