fix: support official x402 resource servers (#806)

* fix: support official x402 resource servers

* test: expand Coinbase x402 interoperability

Author: brendanjryan

.changeset/coinbase-x402-interoperability.md

@@ -0,0 +1,5 @@
+---
+'mppx': patch
+---
+
+Added CI interoperability coverage against the Coinbase x402 resource server and facilitator implementations.

.github/workflows/verify.yml

@@ -253,7 +253,7 @@ jobs:
             --name mppx-x402-anvil \
             -p 18546:8545 \
             --entrypoint anvil \
-            ghcr.io/foundry-rs/foundry:latest \
+            ghcr.io/foundry-rs/foundry@sha256:ede4c35d3e9310f6c77f09952cd666e17e4ee7cd5228290d8b4fc9d5cdd37eb1 \
             --host 0.0.0.0 \
             --port 8545 \
             --chain-id 31337 \
@@ -280,11 +280,14 @@ jobs:
             -v "${PWD}:/workspace" \
             -w /workspace \
             --entrypoint forge \
-            ghcr.io/foundry-rs/foundry:latest \
+            ghcr.io/foundry-rs/foundry@sha256:ede4c35d3e9310f6c77f09952cd666e17e4ee7cd5228290d8b4fc9d5cdd37eb1 \
             build
 
       - name: Run x402 localnet tests
-        run: pnpm exec vp test --run --project node src/x402/Exact.localnet.test.ts --reporter=verbose --bail=1
+        run: pnpm exec vp test --run --project x402-localnet --reporter=verbose --bail=1
+
+      - name: Run Coinbase x402 client interoperability tests
+        run: pnpm exec vp test --run --project x402-coinbase-client --reporter=verbose --bail=1
 
   test-html:
     name: Test HTML

package.json

@@ -38,6 +38,9 @@
     "@types/node": "^25.6.0",
     "@types/ws": "^8.18.1",
     "@typescript/native-preview": "7.0.0-dev.20260707.2",
+    "@x402/core": "2.22.0",
+    "@x402/evm": "2.22.0",
+    "@x402/express": "2.22.0",
     "browserslist": "^4.28.7",
     "elysia": "^1.4.29",
     "eslint-plugin-compat": "^7.0.2",