Tereno Token Change Monitor

Monitor a Base contract and get the diff, not another scan. Every call compares the address against Tereno's previous observation and names what actually moved: a proxy implementation swap, an admin change, new bytecode, a contract that just got paused. Unchanged is an answer too, and every answer carries the block it stops being valid at, so a bot knows when to look again. $0.02 when nobody has watched this address yet, $0.01 once another agent has.

Resource: www.tereno.xyz/api/v1/capabilities/contract.change/invoke

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94

Payment methods: — · Last validation: 2026-09-14 07:42:44.573+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "required": [
          "address"
        ],
        "properties": {
          "quote": {
            "type": "string",
            "description": "Optional single-use quote id."
          },
          "address": {
            "type": "string",
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "description": "Base contract address to compare with its previous Tereno observation."
          }
        },
        "additionalProperties": false
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "required": [
          "capabilityId",
          "invocationId",
          "verdict",
          "result",
          "pricing",
          "receiptUrl"
        ],
        "properties": {
          "result": {
            "type": "object",
            "required": [
              "changed",
              "baselineCreated",
              "changes",
              "current",
              "validUntilBlock"
            ],
            "properties": {
              "changed": {
                "type": "boolean"
              },
              "changes": {
                "type": "array"
              },
              "current": {
                "type": "object"
              },
              "baselineCreated": {
                "type": "boolean"
              },
              "validUntilBlock": {
                "type": "integer"
              }
            }
          },
          "pricing": {
            "type": "object"
          },
          "verdict": {
            "enum": [
              "allow",
              "review",
              "block"
            ]
          },
          "nextCall": {
            "type": [
              "object",
              "null"
            ]
          },
          "receiptUrl": {
            "type": "string"
          },
          "capabilityId": {
            "const": "contract.change"
          },
          "invocationId": {
            "type": "string"
          }
        }
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "20000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.