DLL Execution

{
  "mcpServers": {
    "io.github.dllio/dll-execution": {
      "url": "https://execution.dll.io/mcp"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

2 shown · authentication unknown

• Base transaction simulation / Preflight

  preflight_transaction

  Before signing: simulate one unsigned Base Mainnet (8453) candidate (chain_id/from/to/value/data); inspect call success/revert, top-level destination and L2 fee constraints, Judgment, reason codes and evidence. Free; no API key, wallet or payment. Complete supported EIP-1559 fee_estimation context optionally estimates L1/L2/applicable Operator/Total Network Fee separately; legacy Judgment is unchanged, not automatic PASS. Inspect http_status, response.judgment and response.simulation. After broadcast use verify_transaction. No signing, broadcasting, custody, asset-delta/risk scan or execution guarantee.

  Schema valid · SHA-256 1223d0b126cc…

  View input schema

  {
    "type": "object",
    "properties": {
      "candidate": {
        "type": "object",
        "properties": {
          "chain_id": {
            "type": "string",
            "const": "8453"
          },
          "from": {
            "type": "string",
            "minLength": 42,
            "maxLength": 42
          },
          "to": {
            "type": "string",
            "minLength": 42,
            "maxLength": 42
          },
          "value": {
            "type": "string",
            "maxLength": 78,
            "pattern": "^(0|[1-9][0-9]*)$"
          },
          "data": {
            "type": "string",
            "maxLength": 131074,
            "pattern": "^0x(?:[0-9a-fA-F]{2})*$"
          }
        },
        "required": [
          "chain_id",
          "from",
          "to",
          "value",
          "data"
        ],
        "additionalProperties": false
      },
      "constraints": {
        "type": "object",
        "properties": {
          "max_execution_cost_wei": {
            "type": "string",
            "maxLength": 78,
            "pattern": "^(0|[1-9][0-9]*)$"
          },
          "allowed_to": {
            "maxItems": 100,
            "type": "array",
            "items": {
              "type": "string",
              "minLength": 42,
              "maxLength": 42
            }
          },
          "denied_to": {
            "maxItems": 100,
            "type": "array",
            "items": {
              "type": "string",
              "minLength": 42,
              "maxLength": 42
            }
          }
        },
        "additionalProperties": false
      },
      "fee_estimation": {
        "description": "Explicit opt-in to a separate versioned network_fee_estimate. Missing transaction fields are never guessed. Legacy cost_estimate, Judgment and L2 constraints remain unchanged.",
        "type": "object",
        "properties": {
          "version": {
            "type": "string",
            "const": "base_network_fee_v1"
          },
          "transaction": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "eip1559"
              },
              "nonce": {
                "type": "string",
                "maxLength": 16,
                "pattern": "^(0|[1-9][0-9]*)$",
                "description": "Explicit nonce, 0–9007199254740991; not checked against account state."
              },
              "gas_limit": {
                "type": "string",
                "maxLength": 7,
                "pattern": "^(0|[1-9][0-9]*)$",
                "description": "Declared gas limit, 21000–5000000. Original simulation ceiling is unchanged."
              },
              "max_fee_per_gas": {
                "type": "string",
                "maxLength": 78,
                "pattern": "^(0|[1-9][0-9]*)$"
              },
              "max_priority_fee_per_gas": {
                "type": "string",
                "maxLength": 78,
                "pattern": "^(0|[1-9][0-9]*)$"
              },
              "access_list": {
                "type": "array",
                "items": [],
                "additionalItems": false,
                "maxItems": 0,
                "description": "Only an empty access list is supported by this fee-estimate version."
              }
            },
            "required": [
              "type",
              "nonce",
              "gas_limit",
              "max_fee_per_gas",
              "max_priority_fee_per_gas",
              "access_list"
            ],
            "additionalProperties": false
          }
        },
        "required": [
          "version"
        ],
        "additionalProperties": false
      }
    },
    "required": [
      "candidate"
    ],
    "$schema": "http://json-schema.org/draft-07/schema#",
    "additionalProperties": false
  }