fix(e2e): stop the mechanisms catalog from importing a built package

.github/workflows/check_payment_channels_codegen.yml

@@ -0,0 +1,39 @@
+name: Check Payment Channels Codegen
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/check_payment_channels_codegen.yml"
+      - "typescript/pnpm-lock.yaml"
+      - "typescript/packages/mechanisms/svm/idl/**"
+      - "scripts/payment-channels-codegen/**"
+      - "typescript/packages/mechanisms/svm/src/payment-channels/generated/**"
+      - "typescript/packages/mechanisms/svm/package.json"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: none
+
+jobs:
+  check-payment-channels-codegen:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093 # v6.0.8
+        with:
+          version: 11.1.1
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version: "24"
+          cache: "pnpm"
+          cache-dependency-path: scripts/payment-channels-codegen/pnpm-lock.yaml
+
+      - name: Install codegen dependencies
+        run: pnpm --dir scripts/payment-channels-codegen install --frozen-lockfile --ignore-scripts
+
+      - name: Verify generated client
+        run: pnpm --dir scripts/payment-channels-codegen check

.github/workflows/publish_npm_scoped_x402_all.yml

@@ -38,6 +38,10 @@ jobs:
         working-directory: ./typescript
         run: pnpm turbo run build --filter='@x402/*'
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish all packages in release order
         working-directory: ./typescript
         run: |

.github/workflows/publish_npm_scoped_x402_aptos.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/aptos run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/aptos package
         working-directory: ./typescript/packages/mechanisms/aptos
         run: |

.github/workflows/publish_npm_scoped_x402_avm.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/avm run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/avm package
         working-directory: ./typescript/packages/mechanisms/avm
         run: |

.github/workflows/publish_npm_scoped_x402_axios.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/axios run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/axios package
         working-directory: ./typescript/packages/http/axios
         run: |

.github/workflows/publish_npm_scoped_x402_cardano.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/cardano run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/cardano package
         working-directory: ./typescript/packages/mechanisms/cardano
         run: |

.github/workflows/publish_npm_scoped_x402_casper.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/casper run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/casper package
         working-directory: ./typescript/packages/mechanisms/casper
         run: |

.github/workflows/publish_npm_scoped_x402_concordium.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/concordium run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/concordium package
         working-directory: ./typescript/packages/mechanisms/concordium
         run: |

.github/workflows/publish_npm_scoped_x402_core.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/core package
         working-directory: ./typescript/packages/core
         run: |

.github/workflows/publish_npm_scoped_x402_evm.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/evm run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/evm package
         working-directory: ./typescript/packages/mechanisms/evm
         run: |

.github/workflows/publish_npm_scoped_x402_express.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/express run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/express package
         working-directory: ./typescript/packages/http/express
         run: |

.github/workflows/publish_npm_scoped_x402_extensions.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/extensions package
         working-directory: ./typescript/packages/extensions
         run: |

.github/workflows/publish_npm_scoped_x402_fastify.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/fastify run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/fastify package
         working-directory: ./typescript/packages/http/fastify
         run: |

.github/workflows/publish_npm_scoped_x402_fetch.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/fetch run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/fetch package
         working-directory: ./typescript/packages/http/fetch
         run: |

.github/workflows/publish_npm_scoped_x402_hedera.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/hedera run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/hedera package
         working-directory: ./typescript/packages/mechanisms/hedera
         run: |

.github/workflows/publish_npm_scoped_x402_hono.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/hono run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/hono package
         working-directory: ./typescript/packages/http/hono
         run: |

.github/workflows/publish_npm_scoped_x402_keeta.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/keeta run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/keeta package
         working-directory: ./typescript/packages/mechanisms/keeta
         run: |

.github/workflows/publish_npm_scoped_x402_mcp.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/mcp run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/mcp package
         working-directory: ./typescript/packages/mcp
         run: |

.github/workflows/publish_npm_scoped_x402_near.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/near run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/near package
         working-directory: ./typescript/packages/mechanisms/near
         run: |

.github/workflows/publish_npm_scoped_x402_next.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/next run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/next package
         working-directory: ./typescript/packages/http/next
         run: |

.github/workflows/publish_npm_scoped_x402_paywall.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/evm --filter=@x402/svm --filter=@x402/avm --filter=@x402/paywall run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/paywall package
         working-directory: ./typescript/packages/http/paywall
         run: |

.github/workflows/publish_npm_scoped_x402_stellar.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/stellar run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/stellar package
         working-directory: ./typescript/packages/mechanisms/stellar
         run: |

.github/workflows/publish_npm_scoped_x402_svm.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/svm run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/svm package
         working-directory: ./typescript/packages/mechanisms/svm
         run: |

.github/workflows/publish_npm_scoped_x402_tvm.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/extensions --filter=@x402/tvm run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/tvm package
         working-directory: ./typescript/packages/mechanisms/tvm
         run: |

.github/workflows/publish_npm_scoped_x402_xrpl.yml

@@ -36,6 +36,10 @@ jobs:
           pnpm install --frozen-lockfile --ignore-scripts
           pnpm -r --filter=@x402/core --filter=@x402/xrpl run build
 
+      - name: Verify package exports
+        working-directory: ./typescript
+        run: pnpm verify:exports
+
       - name: Publish @x402/xrpl package
         working-directory: ./typescript/packages/mechanisms/xrpl
         run: |

.github/workflows/unit_tests.yml

@@ -30,4 +30,5 @@ jobs:
         working-directory: ./typescript
         run: |
           pnpm install --frozen-lockfile --ignore-scripts
-          pnpm run test
+          pnpm exec turbo run test --concurrency=50%
+          pnpm verify:exports

contracts/evm/README.md

@@ -43,6 +43,8 @@ Both contracts:
 |-------|-------|------|
 | Base Mainnet | [Deployed](https://basescan.org/address/0x402085c248EeA27D92E8b30b2C58ed07f9E20001) | [Deployed](https://basescan.org/address/0x4020A4f3b7b90ccA423B9fabCc0CE57C6C240002) |
 | Base Sepolia | [Deployed](https://sepolia.basescan.org/address/0x402085c248EeA27D92E8b30b2C58ed07f9E20001) | [Legacy\*](https://sepolia.basescan.org/address/0x402039b3d6E6BEC5A02c2C9fd937ac17A6940002) |
+| Arc Mainnet | — | [Deployed](https://explorer.arc.io/address/0x4020A4f3b7b90ccA423B9fabCc0CE57C6C240002) |
+| Arc Testnet | [Deployed](https://explorer.testnet.arc.io/address/0x402085c248EeA27D92E8b30b2C58ed07f9E20001) | [Deployed](https://explorer.testnet.arc.io/address/0x4020A4f3b7b90ccA423B9fabCc0CE57C6C240002) |
 
 **Batch settlement deployments**
 

docs/core-concepts/network-and-token-support.mdx

@@ -66,9 +66,11 @@ Both methods provide gasless transfers (facilitator sponsors gas), signature-bas
 
 **Permit2 approval**: Requires a one-time onchain approval. x402 supports two gas sponsoring extensions that make this step gasless — see [EIP-2612 Gas Sponsoring](/extensions/eip2612-gas-sponsoring) and [ERC-20 Approval Gas Sponsoring](/extensions/erc20-approval-gas-sponsoring).
 
-### EVM: Batch settlement (`batch-settlement`)
+### Batch settlement (`batch-settlement`)
 
-For high-frequency or repeated micropayment flows where settling every request onchain is too costly, x402 supports the **`batch-settlement`** scheme on EVM: the buyer deposits once into an escrow contract, signs off-chain vouchers per request, and sellers redeem in batches onchain. Per-request pricing still uses an **up-to** ceiling (`PaymentRequirements.amount`); actual charges can vary per request within that limit—see **[Batch settlement](/schemes/batch-settlement)**.
+For high-frequency or repeated micropayment flows where settling every request onchain is too costly, x402 supports the **`batch-settlement`** scheme on EVM and Solana (SVM): the buyer deposits once into an escrow channel, signs off-chain cumulative vouchers per request, and sellers redeem in batches onchain. Per-request pricing still uses an **up-to** ceiling (`PaymentRequirements.amount`); actual charges can vary per request within that limit—see **[Batch settlement](/schemes/batch-settlement)**.
+
+On EVM, the escrow is an onchain contract using EIP-3009 or Permit2. On SVM, the escrow uses the [payment-channels program](https://github.com/solana-foundation/payment-channels), the same program used by `upto`. The TypeScript SDK supports both networks; Go and Python currently support EVM only—see [SDK Features](/sdk-features).
 
 ### Specifying Payment Amounts