Wever Labs Agent Products

Agent Escrow Lite

wever_agent-escrow-lite

Destructive

Paid URL: 0.10 USDC per call on Base; 10 signed-wallet free calls shared over rolling 30 days. Read the backend 402 body for x402 terms. Escrow principal and API-fee wallet: 0x69255FeaC86268C0D0bD0CBd128da7B9aB44b1c4. Principal funding is separate, and every call requires a signed wallet ownership proof. Managed Base USDC custody with verified funding, immutable parties, EIP-712 release policies, expiry refunds to the payer and a durable public release log. Operating boundary: The separate custody wallet accepts bounded USDC principal. A verified release pays only the immutable payee; an expiry refund pays only the immutable payer. API fees are separate, manual sweeps are required, and work-order grants are not payment authority. POST /api/agent-escrow-lite. Existing product credentials, signed mandates, and single-use action grants remain required where applicable. This adapter grants no authority and never supplies server credentials. This managed custody service uses immutable escrow parties and EIP-712 release policies. Releases pay only the payee; expiry refunds pay only the payer. Public logs report durable state and transaction evidence. Work-order grants do not authorize payment.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`mode`	Yes
`terms`	No
`mandate`	No
`escrow_id`	No
`funding_payment`	No
`idempotency_key`	No
`payer_terms_signature`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed16 schema fields changedSep 30, 2026

changedInput schema / additionalProperties
```
Previous value: -trueNew value: +false
```

removedInput schema / description

Removed value: -"The existing product POST body. Supply its documented mode, arguments, and required signed authority or grant. The product validates its full contract."

removedInput schema / maxProperties
```
Removed value: -64
```
removedInput schema / minProperties
```
Removed value: -1
```

addedInput schema / oneOf

Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "idempotency_key": {
+        "pattern": "^[a-zA-Z0-9_.:-]{1,128}(?![\\s\\S])",
+        "type": "string"
+      },
+      "mode": {
+        "const": "prepare_funding"
+      },
+      "payer_terms_signature": {
+        "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+        "type": "string"
+      },
+      "terms": {
+        "additionalProperties": false,
+        "properties": {
+          "amount_atomic": {
+            "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+            "type": "string"
+          },
+          "asset": {
+            "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+          },
+          "chain_id": {
+            "const": 8453
+          },
+          "custody_wallet": {
+            "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+            "type": "string"
+          },
+          "escrow_id": {
+            "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+            "type": "string"
+          },
+          "expires_at": {
+            "maximum": 4102444800,
+            "minimum": 1,
+            "type": "integer"
+          },
+          "funding_nonce": {
+            "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+            "type": "string"
+          },
+          "payee_wallet": {
+            "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+            "type": "string"
+          },
+          "payer_wallet": {
+            "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+            "type": "string"
+          },
+          "release_policy": {
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "payer_signed"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "mutual"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "attestor_wallet": {
+                    "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "delivery_sha256": {
+                    "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "kind": {
+                    "const": "delivery_attestation"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "attestor_wallet",
+                  "delivery_sha256"
+                ],
+                "type": "object"
+              }
+            ]
+          }
+        },
+        "required": [
+          "escrow_id",
+          "payer_wallet",
+          "payee_wallet",
+          "custody_wallet",
+          "chain_id",
+          "asset",
+          "amount_atomic",
+          "expires_at",
+          "funding_nonce",
+          "release_policy"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "mode",
+      "terms",
+      "payer_terms_signature",
+      "idempotency_key"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "escrow_id": {
+        "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+        "type": "string"
+      },
+      "funding_payment": {
+        "anyOf": [
+          {
+            "type": "null"
+          },
+          {
+            "additionalProperties": false,
+            "properties": {
+              "accepted": {
+                "additionalProperties": false,
+                "properties": {
+                  "amount": {
+                    "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "asset": {
+                    "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+                  },
+                  "extra": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "name": {
+                        "const": "USD Coin"
+                      },
+                      "version": {
+                        "const": "2"
+                      }
+                    },
+                    "required": [
+                      "name",
+                      "version"
+                    ],
+                    "type": "object"
+                  },
+                  "maxTimeoutSeconds": {
+                    "maximum": 3600,
+                    "minimum": 1,
+                    "type": "integer"
+                  },
+                  "network": {
+                    "const": "eip155:8453"
+                  },
+                  "payTo": {
+                    "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "scheme": {
+                    "const": "exact"
+                  }
+                },
+                "required": [
+                  "scheme",
+                  "network",
+                  "asset",
+                  "amount",
+                  "payTo",
+                  "maxTimeoutSeconds",
+                  "extra"
+                ],
+                "type": "object"
+              },
+              "payload": {
+                "additionalProperties": false,
+                "properties": {
+                  "authorization": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "from": {
+                        "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "nonce": {
+                        "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "to": {
+                        "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "validAfter": {
+                        "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "validBefore": {
+                        "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "value": {
+                        "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "from",
+                      "to",
+                      "value",
+                      "validAfter",
+                      "validBefore",
+                      "nonce"
+                    ],
+                    "type": "object"
+                  },
+                  "signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "signature",
+                  "authorization"
+                ],
+                "type": "object"
+              },
+              "resource": {
+                "additionalProperties": false,
+                "properties": {
+                  "description": {
+                    "maxLength": 256,
+                    "type": "string"
+                  },
+                  "mimeType": {
+                    "const": "application/json"
+                  },
+                  "url": {
+                    "maxLength": 512,
+                    "minLength": 1,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "url",
+                  "description",
+                  "mimeType"
+                ],
+                "type": "object"
+              },
+              "x402Version": {
+                "const": 2
+              }
+            },
+            "required": [
+              "x402Version",
+              "resource",
+              "accepted",
+              "payload"
+            ],
+            "type": "object"
+          }
+        ]
+      },
+      "idempotency_key": {
+        "pattern": "^[a-zA-Z0-9_.:-]{1,128}(?![\\s\\S])",
+        "type": "string"
+      },
+      "mode": {
+        "const": "fund_escrow"
+      }
+    },
+    "required": [
+      "mode",
+      "escrow_id",
+      "idempotency_key",
+      "funding_payment"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "escrow_id": {
+        "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+        "type": "string"
+      },
+      "idempotency_key": {
+        "pattern": "^[a-zA-Z0-9_.:-]{1,128}(?![\\s\\S])",
+        "type": "string"
+      },
+      "mandate": {
+        "additionalProperties": false,
+        "properties": {
+          "context": {
+            "additionalProperties": false,
+            "properties": {
+              "amount_atomic": {
+                "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                "type": "string"
+              },
+              "asset": {
+                "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+              },
+              "chain_id": {
+                "const": 8453
+              },
+              "custody_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "escrow_id": {
+                "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "expires_at": {
+                "maximum": 4102444800,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "funding_nonce": {
+                "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "funding_transaction_hash": {
+                "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "payee_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "payer_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "release_nonce": {
+                "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "terms_sha256": {
+                "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+                "type": "string"
+              }
+            },
+            "required": [
+              "escrow_id",
+              "payer_wallet",
+              "payee_wallet",
+              "custody_wallet",
+              "chain_id",
+              "asset",
+              "amount_atomic",
+              "expires_at",
+              "funding_nonce",
+              "terms_sha256",
+              "funding_transaction_hash",
+              "release_nonce"
+            ],
+            "type": "object"
+          },
+          "payer_terms_signature": {
+            "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+            "type": "string"
+          },
+          "signatures": {
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "payer_signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "payer_signature"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "payee_signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "payer_signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "payer_signature",
+                  "payee_signature"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "attestor_signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  },
+                  "payee_signature": {
+                    "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "payee_signature",
+                  "attestor_signature"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "terms": {
+            "additionalProperties": false,
+            "properties": {
+              "amount_atomic": {
+                "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                "type": "string"
+              },
+              "asset": {
+                "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+              },
+              "chain_id": {
+                "const": 8453
+              },
+              "custody_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "escrow_id": {
+                "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "expires_at": {
+                "maximum": 4102444800,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "funding_nonce": {
+                "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                "type": "string"
+              },
+              "payee_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "payer_wallet": {
+                "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                "type": "string"
+              },
+              "release_policy": {
+                "oneOf": [
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "kind": {
+                        "const": "payer_signed"
+                      }
+                    },
+                    "required": [
+                      "kind"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "kind": {
+                        "const": "mutual"
+                      }
+                    },
+                    "required": [
+                      "kind"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "attestor_wallet": {
+                        "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "delivery_sha256": {
+                        "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+                        "type": "string"
+                      },
+                      "kind": {
+                        "const": "delivery_attestation"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "attestor_wallet",
+                      "delivery_sha256"
+                    ],
+                    "type": "object"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "escrow_id",
+              "payer_wallet",
+              "payee_wallet",
+              "custody_wallet",
+              "chain_id",
+              "asset",
+              "amount_atomic",
+              "expires_at",
+              "funding_nonce",
+              "release_policy"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "context",
+          "terms",
+          "payer_terms_signature",
+          "signatures"
+        ],
+        "type": "object"
+      },
+      "mode": {
+        "const": "release_escrow"
+      }
+    },
+    "required": [
+      "mode",
+      "escrow_id",
+      "idempotency_key",
+      "mandate"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "escrow_id": {
+        "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+        "type": "string"
+      },
+      "idempotency_key": {
+        "pattern": "^[a-zA-Z0-9_.:-]{1,128}(?![\\s\\S])",
+        "type": "string"
+      },
+      "mode": {
+        "const": "refund_escrow"
+      }
+    },
+    "required": [
+      "mode",
+      "escrow_id",
+      "idempotency_key"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "escrow_id": {
+        "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+        "type": "string"
+      },
+      "mode": {
+        "const": "read_escrow"
+      }
+    },
+    "required": [
+      "mode",
+      "escrow_id"
+    ],
+    "type": "object"
+  }
+]

addedInput schema / properties / escrow_id

Added value: +{
+  "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+  "type": "string"
+}

addedInput schema / properties / funding_payment

Added value: +{
+  "anyOf": [
+    {
+      "type": "null"
+    },
+    {
+      "additionalProperties": false,
+      "properties": {
+        "accepted": {
+          "additionalProperties": false,
+          "properties": {
+            "amount": {
+              "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+              "type": "string"
+            },
+            "asset": {
+              "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+            },
+            "extra": {
+              "additionalProperties": false,
+              "properties": {
+                "name": {
+                  "const": "USD Coin"
+                },
+                "version": {
+                  "const": "2"
+                }
+              },
+              "required": [
+                "name",
+                "version"
+              ],
+              "type": "object"
+            },
+            "maxTimeoutSeconds": {
+              "maximum": 3600,
+              "minimum": 1,
+              "type": "integer"
+            },
+            "network": {
+              "const": "eip155:8453"
+            },
+            "payTo": {
+              "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+              "type": "string"
+            },
+            "scheme": {
+              "const": "exact"
+            }
+          },
+          "required": [
+            "scheme",
+            "network",
+            "asset",
+            "amount",
+            "payTo",
+            "maxTimeoutSeconds",
+            "extra"
+          ],
+          "type": "object"
+        },
+        "payload": {
+          "additionalProperties": false,
+          "properties": {
+            "authorization": {
+              "additionalProperties": false,
+              "properties": {
+                "from": {
+                  "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                  "type": "string"
+                },
+                "nonce": {
+                  "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+                  "type": "string"
+                },
+                "to": {
+                  "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                  "type": "string"
+                },
+                "validAfter": {
+                  "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                  "type": "string"
+                },
+                "validBefore": {
+                  "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                  "type": "string"
+                },
+                "value": {
+                  "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "from",
+                "to",
+                "value",
+                "validAfter",
+                "validBefore",
+                "nonce"
+              ],
+              "type": "object"
+            },
+            "signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            }
+          },
+          "required": [
+            "signature",
+            "authorization"
+          ],
+          "type": "object"
+        },
+        "resource": {
+          "additionalProperties": false,
+          "properties": {
+            "description": {
+              "maxLength": 256,
+              "type": "string"
+            },
+            "mimeType": {
+              "const": "application/json"
+            },
+            "url": {
+              "maxLength": 512,
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "url",
+            "description",
+            "mimeType"
+          ],
+          "type": "object"
+        },
+        "x402Version": {
+          "const": 2
+        }
+      },
+      "required": [
+        "x402Version",
+        "resource",
+        "accepted",
+        "payload"
+      ],
+      "type": "object"
+    }
+  ]
+}

addedInput schema / properties / idempotency_key

Added value: +{
+  "pattern": "^[a-zA-Z0-9_.:-]{1,128}(?![\\s\\S])",
+  "type": "string"
+}

addedInput schema / properties / mandate

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "context": {
+      "additionalProperties": false,
+      "properties": {
+        "amount_atomic": {
+          "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+          "type": "string"
+        },
+        "asset": {
+          "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+        },
+        "chain_id": {
+          "const": 8453
+        },
+        "custody_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "escrow_id": {
+          "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "expires_at": {
+          "maximum": 4102444800,
+          "minimum": 1,
+          "type": "integer"
+        },
+        "funding_nonce": {
+          "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "funding_transaction_hash": {
+          "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "payee_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "payer_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "release_nonce": {
+          "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "terms_sha256": {
+          "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+          "type": "string"
+        }
+      },
+      "required": [
+        "escrow_id",
+        "payer_wallet",
+        "payee_wallet",
+        "custody_wallet",
+        "chain_id",
+        "asset",
+        "amount_atomic",
+        "expires_at",
+        "funding_nonce",
+        "terms_sha256",
+        "funding_transaction_hash",
+        "release_nonce"
+      ],
+      "type": "object"
+    },
+    "payer_terms_signature": {
+      "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+      "type": "string"
+    },
+    "signatures": {
+      "oneOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "payer_signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            }
+          },
+          "required": [
+            "payer_signature"
+          ],
+          "type": "object"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "payee_signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            },
+            "payer_signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            }
+          },
+          "required": [
+            "payer_signature",
+            "payee_signature"
+          ],
+          "type": "object"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "attestor_signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            },
+            "payee_signature": {
+              "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+              "type": "string"
+            }
+          },
+          "required": [
+            "payee_signature",
+            "attestor_signature"
+          ],
+          "type": "object"
+        }
+      ]
+    },
+    "terms": {
+      "additionalProperties": false,
+      "properties": {
+        "amount_atomic": {
+          "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+          "type": "string"
+        },
+        "asset": {
+          "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+        },
+        "chain_id": {
+          "const": 8453
+        },
+        "custody_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "escrow_id": {
+          "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "expires_at": {
+          "maximum": 4102444800,
+          "minimum": 1,
+          "type": "integer"
+        },
+        "funding_nonce": {
+          "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+          "type": "string"
+        },
+        "payee_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "payer_wallet": {
+          "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+          "type": "string"
+        },
+        "release_policy": {
+          "oneOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "kind": {
+                  "const": "payer_signed"
+                }
+              },
+              "required": [
+                "kind"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "kind": {
+                  "const": "mutual"
+                }
+              },
+              "required": [
+                "kind"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "attestor_wallet": {
+                  "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+                  "type": "string"
+                },
+                "delivery_sha256": {
+                  "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+                  "type": "string"
+                },
+                "kind": {
+                  "const": "delivery_attestation"
+                }
+              },
+              "required": [
+                "kind",
+                "attestor_wallet",
+                "delivery_sha256"
+              ],
+              "type": "object"
+            }
+          ]
+        }
+      },
+      "required": [
+        "escrow_id",
+        "payer_wallet",
+        "payee_wallet",
+        "custody_wallet",
+        "chain_id",
+        "asset",
+        "amount_atomic",
+        "expires_at",
+        "funding_nonce",
+        "release_policy"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "context",
+    "terms",
+    "payer_terms_signature",
+    "signatures"
+  ],
+  "type": "object"
+}

addedInput schema / properties / mode / enum

Added value: +[
+  "prepare_funding",
+  "fund_escrow",
+  "release_escrow",
+  "refund_escrow",
+  "read_escrow"
+]

removedInput schema / properties / mode / maxLength
```
Removed value: -128
```
removedInput schema / properties / mode / minLength
```
Removed value: -1
```
removedInput schema / properties / mode / type
```
Removed value: -"string"
```

addedInput schema / properties / payer_terms_signature

Added value: +{
+  "pattern": "^0x[0-9a-fA-F]{130}(?![\\s\\S])",
+  "type": "string"
+}

addedInput schema / properties / terms

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "amount_atomic": {
+      "pattern": "^(0|[1-9][0-9]{0,77})(?![\\s\\S])",
+      "type": "string"
+    },
+    "asset": {
+      "const": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
+    },
+    "chain_id": {
+      "const": 8453
+    },
+    "custody_wallet": {
+      "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+      "type": "string"
+    },
+    "escrow_id": {
+      "pattern": "^esc_[0-9a-f]{64}(?![\\s\\S])",
+      "type": "string"
+    },
+    "expires_at": {
+      "maximum": 4102444800,
+      "minimum": 1,
+      "type": "integer"
+    },
+    "funding_nonce": {
+      "pattern": "^0x[0-9a-fA-F]{64}(?![\\s\\S])",
+      "type": "string"
+    },
+    "payee_wallet": {
+      "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+      "type": "string"
+    },
+    "payer_wallet": {
+      "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+      "type": "string"
+    },
+    "release_policy": {
+      "oneOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "kind": {
+              "const": "payer_signed"
+            }
+          },
+          "required": [
+            "kind"
+          ],
+          "type": "object"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "kind": {
+              "const": "mutual"
+            }
+          },
+          "required": [
+            "kind"
+          ],
+          "type": "object"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "attestor_wallet": {
+              "pattern": "^0x[0-9a-fA-F]{40}(?![\\s\\S])",
+              "type": "string"
+            },
+            "delivery_sha256": {
+              "pattern": "^[0-9a-f]{64}(?![\\s\\S])",
+              "type": "string"
+            },
+            "kind": {
+              "const": "delivery_attestation"
+            }
+          },
+          "required": [
+            "kind",
+            "attestor_wallet",
+            "delivery_sha256"
+          ],
+          "type": "object"
+        }
+      ]
+    }
+  },
+  "required": [
+    "escrow_id",
+    "payer_wallet",
+    "payee_wallet",
+    "custody_wallet",
+    "chain_id",
+    "asset",
+    "amount_atomic",
+    "expires_at",
+    "funding_nonce",
+    "release_policy"
+  ],
+  "type": "object"
+}

addedInput schema / required
```
Added value: +[
+  "mode"
+]
```

First observedSep 29, 2026

TDQS

B3.1/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already flag destructiveHint=true, readOnlyHint=false, and openWorldHint=true, so the safety profile is covered. The description goes further with genuinely useful context: funds move only to immutable parties, releases pay only the payee, expiry refunds pay only the payer, API fees are separate with manual sweeps, and the adapter grants no authority and never supplies server credentials. It does not, however, disclose failure/retry behavior or what happens to partially funded escrows.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The text is long and repetitive: the immutable-payee/immutable-payer release-and-refund rule is restated three separate times, and the front-loaded content is pricing rather than what the tool does. Several boundary sentences ('This adapter grants no authority', 'Work-order grants do not authorize payment') duplicate each other.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a five-mode, deeply nested tool with no output schema and 0% schema description coverage, the description omits the single most important dispatch information: what each mode does and when to use it. Behavioral boundaries are covered well, but an agent cannot confidently pick prepare_funding vs fund_escrow vs release_escrow from this text alone.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% across seven parameters with deep nested objects, so the description must carry the semantic load. It alludes to signed wallet proofs, mandates, and EIP-712 release policies, which loosely map to payer_terms_signature, mandate, and release_policy, but it never explains the mode enum values, escrow_id format, idempotency_key role, or the funding_payment structure. Most parameter meaning is left undisclosed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a recognizable resource and scope: 'Managed Base USDC custody with verified funding, immutable parties, EIP-712 release policies, expiry refunds to the payer and a durable public release log.' An agent can tell this is an escrow custody service, though the phrasing is diffuse and never enumerates the five operational modes (prepare/fund/release/refund/read) that actually define what the tool does.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Prerequisites are implied ('Existing product credentials, signed mandates, and single-use action grants remain required where applicable') and the pricing/402 hint tells the agent where to look for payment terms, but there is no explicit when-to-use guidance and no routing to or from siblings like wever_x402-payment-gateway or wever_unified-agent-checkout.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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