このMCPでできること
Resolves EVM contract ABIs, reads and simulates contracts, decodes transactions, encodes calls, and prepares unsigned transactions for signing.
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decode_tx
Explain a transaction
Decode what a transaction did: delegated heimdall decode plus `decoded_call` from the resolved target ABI when available. Prefer `decoded_call` for typed function/arg names, and read its provenance.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'tx_hash'], 'properties': {'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'tx_hash': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{64}$', 'description': '0x transaction hash.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'tx_hash', 'source', 'cached', 'decoded', 'provenance'], 'properties': {'chain': {'type': 'integer'}, 'cached': {'type': 'boolean'}, 'source': {'type': 'string'}, 'decoded': {'anyOf': [{'type': 'string'}, {'type': 'number'}, {'type': 'boolean'}, {'type': 'array'}, {'type': 'object', 'additionalProperties': {}}, {'type': 'null'}]}, 'tx_hash': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{64}$', 'description': '0x transaction hash.'}, 'provenance': {'type': 'object', 'required': ['source', 'confidence', 'verified', 'names_synthetic'], 'properties': {'source': {'type': 'string'}, 'verified': {'type': 'boolean', 'const': False}, 'confidence': {'type': 'string', 'const': 'decompiled'}, 'names_synthetic': {'type': 'boolean', 'const': True}}, 'additionalProperties': True}, 'decoded_call': {'anyOf': [{'type': 'object', 'required': ['to', 'function', 'signature', 'args', 'abi_for', 'provenance'], 'properties': {'to': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'args': {'type': 'array', 'items': {'type': 'object', 'required': ['name', 'type', 'value'], 'properties': {'name': {'type': 'string'}, 'type': {'type': 'string'}, 'value': {'$ref': '#/properties/decoded'}}, 'additionalProperties': True}}, 'abi_for': {'$ref': '#/properties/decoded_call/anyOf/0/properties/to'}, 'function': {'type': 'string'}, 'signature': {'type': 'string'}, 'provenance': {'type': 'object', 'required': ['source', 'confidence', 'verified', 'names_synthetic', 'natspec'], 'properties': {'notes': {'type': 'string'}, 'source': {'enum': ['etherscan', 'sourcify', 'proxy-impl', 'bytecode-match', 'heimdall-decompiled', '4byte'], 'type': 'string'}, 'natspec': {'type': 'boolean'}, 'verified': {'type': 'boolean'}, 'confidence': {'enum': ['verified', 'partial', 'decompiled', 'selector-only'], 'type': 'string'}, 'bytecode_match': {'type': 'object', 'required': ['chain', 'address', 'source', 'confidence'], 'properties': {'chain': {'type': 'integer'}, 'source': {'$ref': '#/properties/decoded_call/anyOf/0/properties/provenance/properties/source'}, 'address': {'$ref': '#/properties/decoded_call/anyOf/0/properties/to'}, 'confidence': {'$ref': '#/properties/decoded_call/anyOf/0/properties/provenance/properties/confidence'}}, 'additionalProperties': True}, 'names_synthetic': {'type': 'boolean'}}, 'additionalProperties': True}}, 'additionalProperties': True}, {'type': 'null'}]}}, 'additionalProperties': False}
encode_call
Encode a function call
Encode a function call to calldata (0xâ¦) without sending anything.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'address', 'function'], 'properties': {'args': {'type': 'array', 'default': [], 'description': 'Function arguments, in order. Pass uint values as decimal strings.'}, 'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'value': {'type': 'string', 'pattern': '^\\d+$', 'description': 'Native value in wei (decimal string), for payable functions.'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'function': {'type': 'string', 'pattern': '\\S', 'minLength': 1, 'description': 'Function name, or full signature like "transfer(address,uint256)" if overloaded.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['data', 'function_signature'], 'properties': {'data': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{2})*$', 'description': 'Raw form: calldata (0x-prefixed hex bytes).'}, 'function_signature': {'type': 'string'}}, 'additionalProperties': False}
export_registry
Export selector commons
Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
list_chains
List supported chains
List viem-backed chain aliases and ids. Use filters to find testnets, default-RPC chains, or a named chain before resolving contracts.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'q': {'type': 'string', 'description': 'Search by chain id, name, alias, or native symbol; multi-word queries also match token-by-token and without whitespace.'}, 'testnets': {'type': 'boolean', 'description': 'When true, only testnets; when false, only mainnets.'}, 'has_default_rpc': {'type': 'boolean', 'description': 'When true, only chains gulltoppr can query without rpc_url.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chains'], 'properties': {'chains': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'name', 'aliases', 'testnet', 'has_default_rpc', 'native_currency'], 'properties': {'id': {'type': 'integer', 'exclusiveMinimum': 0}, 'name': {'type': 'string'}, 'aliases': {'type': 'array', 'items': {'type': 'string'}}, 'testnet': {'type': 'boolean'}, 'default_rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'has_default_rpc': {'type': 'boolean'}, 'native_currency': {'type': 'object', 'required': ['name', 'symbol', 'decimals'], 'properties': {'name': {'type': 'string'}, 'symbol': {'type': 'string'}, 'decimals': {'type': 'integer', 'minimum': 0}}, 'additionalProperties': True}, 'block_explorer_url': {'type': 'string', 'format': 'uri'}}, 'additionalProperties': True}}}, 'additionalProperties': False}
lookup_selector
Lookup selector commons
Lookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0. Prefer these over public 4byte guesses.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['selector'], 'properties': {'selector': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{8}|[0-9a-fA-F]{64})$', 'description': '4-byte function/error selector or 32-byte event topic0.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['selector', 'entries'], 'properties': {'entries': {'type': 'array', 'items': {'type': 'object', 'required': ['kind', 'signature', 'proof'], 'properties': {'kind': {'enum': ['function', 'event', 'error'], 'type': 'string'}, 'chain': {'type': 'integer', 'exclusiveMinimum': 0}, 'proof': {'enum': ['verified-source', 'keccak-proven'], 'type': 'string'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'abi_item': {'anyOf': [{'type': 'string'}, {'type': 'number'}, {'type': 'boolean'}, {'type': 'array'}, {'type': 'object', 'additionalProperties': {}}, {'type': 'null'}]}, 'signature': {'type': 'string'}}, 'additionalProperties': True}}, 'selector': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{8}|[0-9a-fA-F]{64})$', 'description': '4-byte function/error selector or 32-byte event topic0.'}}, 'additionalProperties': False}
prepare_tx
Prepare an unsigned transaction (hand-off)
Prepare a contract WRITE for the user to sign. Returns an UNSIGNED transaction, its simulation, a human-readable summary, safety metadata, warnings, a configured signing deeplink, and an EIP-1193 wallet request when signing is recommended. IMPORTANT: this tool NEVER signs or broadcasts. Present the summary + simulation + warnings to the user. Only hand them the `deeplink` or `wallet_request` when `safety.signing_recommended` is true. If `safety.risk_level` is high or blocked, make that explicit; blocked means do not send.
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'address', 'function', 'from'], 'properties': {'args': {'type': 'array', 'default': [], 'description': 'Function arguments, in order. Pass uint values as decimal strings.'}, 'from': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': "The sender address (the user's wallet). No key is needed â\x80\x94 nothing is signed."}, 'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'value': {'type': 'string', 'pattern': '^\\d+$', 'description': 'Native value in wei (decimal string), for payable functions.'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'function': {'type': 'string', 'pattern': '\\S', 'minLength': 1, 'description': 'Function name, or full signature like "transfer(address,uint256)" if overloaded.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['unsigned_tx', 'simulation', 'human_summary', 'deeplink', 'warnings', 'safety'], 'properties': {'safety': {'type': 'object', 'required': ['signing_recommended', 'risk_level', 'requires_human_confirmation', 'reasons'], 'properties': {'reasons': {'type': 'array', 'items': {'enum': ['abi_names_inferred', 'proxy', 'simulation_failed', 'native_value', 'spending_approval', 'asset_outflow'], 'type': 'string'}}, 'risk_level': {'enum': ['low', 'medium', 'high', 'blocked'], 'type': 'string'}, 'signing_recommended': {'type': 'boolean'}, 'requires_human_confirmation': {'type': 'boolean'}}, 'additionalProperties': True}, 'deeplink': {'type': 'string'}, 'warnings': {'type': 'array', 'items': {'type': 'string'}}, 'simulation': {'type': 'object', 'required': ['success', 'gas_used', 'state_diff', 'asset_changes', 'logs'], 'properties': {'logs': {'type': 'array'}, 'revert': {}, 'success': {'type': 'boolean'}, 'gas_used': {'type': 'integer', 'minimum': 0}, 'state_diff': {'type': 'array'}, 'return_value': {}, 'asset_changes': {'type': 'array'}}, 'additionalProperties': True}, 'unsigned_tx': {'type': 'object', 'required': ['chainId', 'to', 'from', 'data', 'value'], 'properties': {'to': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'gas': {'type': 'string', 'pattern': '^\\d+$'}, 'data': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{2})*$', 'description': 'Raw form: calldata (0x-prefixed hex bytes).'}, 'from': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': "The sender address (the user's wallet). No key is needed â\x80\x94 nothing is signed."}, 'value': {'type': 'string', 'pattern': '^\\d+$'}, 'chainId': {'type': 'integer'}}, 'additionalProperties': True}, 'human_summary': {'type': 'string'}, 'wallet_request': {}}, 'additionalProperties': False}
read_contract
Read a contract (view/pure)
Call a view/pure function and get the decoded result. No wallet, no cost. Rejects state-mutating functions.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'address', 'function'], 'properties': {'args': {'type': 'array', 'default': [], 'description': 'Function arguments, in order. Pass uint values as decimal strings.'}, 'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'function': {'type': 'string', 'pattern': '\\S', 'minLength': 1, 'description': 'Function name, or full signature like "transfer(address,uint256)" if overloaded.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['decoded', 'raw', 'function_signature'], 'properties': {'raw': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{2})*$', 'description': 'Raw form: calldata (0x-prefixed hex bytes).'}, 'decoded': {'type': 'array'}, 'function_signature': {'type': 'string'}}, 'additionalProperties': False}
registry_stats
Registry stats
Read selector commons counts by proof grade and bytecode-match index size.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['selectors', 'bytecodes'], 'properties': {'bytecodes': {'type': 'integer', 'minimum': 0}, 'selectors': {'type': 'object', 'additionalProperties': {'type': 'integer', 'minimum': 0}}}, 'additionalProperties': False}
resolve_abi
Resolve contract ABI
Resolve a contract's interface from chain + address via a fallback ladder (Etherscan â Sourcify â proxy â heimdall decompile â 4byte). Returns a compact capability manifest (read vs write functions, the 'buttons'), proxy chain, token metadata, and PROVENANCE. ALWAYS read `provenance`: a `decompiled` ABI has synthetic function names â treat it with care and confirm intent before writing. Partial, proxy, and bytecode-match results lead with a WARNING before the JSON. The compact manifest/provenance is also returned as structuredContent. Use method_q/method_kind/method_limit for large ABIs. Raw ABI is omitted from MCP output to save tokens; use REST/SDK resolve_abi with include_abi=true if needed.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'address'], 'properties': {'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'method_q': {'type': 'string', 'description': 'Case-insensitive manifest method search across names, signatures, parameters, outputs, and hints.'}, 'method_kind': {'enum': ['read', 'write', 'all'], 'type': 'string', 'description': 'Restrict manifest methods to read, write, or all.'}, 'method_limit': {'type': 'integer', 'maximum': 500, 'minimum': 0, 'description': 'Maximum number of manifest methods to return after filtering.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'address', 'interface', 'provenance', 'abi_for', 'cached', 'abi_omitted'], 'properties': {'chain': {'type': 'integer'}, 'proxy': {'type': 'object', 'required': ['is_proxy', 'pattern', 'hops'], 'properties': {'hops': {'type': 'array', 'items': {'type': 'object', 'required': ['address', 'role'], 'properties': {'role': {'enum': ['proxy', 'implementation', 'beacon', 'facet'], 'type': 'string'}, 'address': {'$ref': '#/properties/address'}}, 'additionalProperties': True}}, 'pattern': {'enum': ['eip1967', 'uups', 'transparent', 'beacon', 'diamond', 'minimal-1167', 'unknown'], 'type': 'string'}, 'is_proxy': {'type': 'boolean', 'const': True}, 'resolved_implementation': {'$ref': '#/properties/address', 'description': '0x contract address.'}}, 'additionalProperties': True}, 'token': {'type': 'object', 'required': ['kind'], 'properties': {'kind': {'anyOf': [{'enum': ['erc20', 'erc721', 'erc1155'], 'type': 'string'}, {'type': 'null'}]}, 'name': {'type': 'string'}, 'symbol': {'type': 'string'}, 'decimals': {'type': 'integer'}}, 'additionalProperties': True}, 'cached': {'type': 'boolean'}, 'abi_for': {'$ref': '#/properties/address'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'interface': {'type': 'object', 'required': ['reads', 'writes'], 'properties': {'reads': {'type': 'array', 'items': {'type': 'object', 'required': ['function', 'signature', 'inputs', 'outputs', 'names_synthetic'], 'properties': {'hint': {'type': 'string'}, 'inputs': {'type': 'array', 'items': {'type': 'object', 'required': ['name', 'type'], 'properties': {'name': {'type': 'string'}, 'type': {'type': 'string'}}, 'additionalProperties': True}}, 'outputs': {'type': 'array', 'items': {'$ref': '#/properties/interface/properties/reads/items/properties/inputs/items'}}, 'function': {'type': 'string'}, 'signature': {'type': 'string'}, 'names_synthetic': {'type': 'boolean'}}, 'additionalProperties': True}}, 'writes': {'type': 'array', 'items': {'type': 'object', 'required': ['function', 'signature', 'inputs', 'payable', 'names_synthetic'], 'properties': {'hint': {'type': 'string'}, 'inputs': {'type': 'array', 'items': {'$ref': '#/properties/interface/properties/reads/items/properties/inputs/items'}}, 'payable': {'type': 'boolean'}, 'function': {'type': 'string'}, 'signature': {'type': 'string'}, 'names_synthetic': {'type': 'boolean'}}, 'additionalProperties': True}}}, 'additionalProperties': True}, 'provenance': {'type': 'object', 'required': ['source', 'confidence', 'verified', 'names_synthetic', 'natspec'], 'properties': {'notes': {'type': 'string'}, 'source': {'enum': ['etherscan', 'sourcify', 'proxy-impl', 'bytecode-match', 'heimdall-decompiled', '4byte'], 'type': 'string'}, 'natspec': {'type': 'boolean'}, 'verified': {'type': 'boolean'}, 'confidence': {'enum': ['verified', 'partial', 'decompiled', 'selector-only'], 'type': 'string'}, 'bytecode_match': {'type': 'object', 'required': ['chain', 'address', 'source', 'confidence'], 'properties': {'chain': {'type': 'integer'}, 'source': {'$ref': '#/properties/provenance/properties/source'}, 'address': {'$ref': '#/properties/address'}, 'confidence': {'$ref': '#/properties/provenance/properties/confidence'}}, 'additionalProperties': True}, 'names_synthetic': {'type': 'boolean'}}, 'additionalProperties': True}, 'abi_omitted': {'type': 'boolean', 'const': True}}, 'additionalProperties': False}
resolve_name
Resolve ENS/Basenames â address
Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['name'], 'properties': {'name': {'type': 'string', 'pattern': '\\S', 'minLength': 1, 'description': 'An ENS/Basename (vitalik.eth, name.base.eth) or a 0x address.'}, 'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'name': {'type': 'string'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}}, 'additionalProperties': False}
runtime_metrics
Runtime metrics
Read process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['uptime_seconds', 'metrics'], 'properties': {'metrics': {'type': 'object', 'additionalProperties': {'type': 'object', 'required': ['attempts', 'successes', 'misses', 'failures', 'total_latency_ms', 'avg_latency_ms', 'max_latency_ms', 'failure_rate'], 'properties': {'misses': {'type': 'integer', 'minimum': 0}, 'attempts': {'type': 'integer', 'minimum': 0}, 'failures': {'type': 'integer', 'minimum': 0}, 'successes': {'type': 'integer', 'minimum': 0}, 'last_error': {'type': 'string'}, 'failure_rate': {'type': 'number', 'maximum': 1, 'minimum': 0}, 'avg_latency_ms': {'type': 'integer', 'minimum': 0}, 'max_latency_ms': {'type': 'integer', 'minimum': 0}, 'total_latency_ms': {'type': 'integer', 'minimum': 0}}, 'additionalProperties': True}}, 'uptime_seconds': {'type': 'integer', 'minimum': 0}}, 'additionalProperties': False}
simulate
Simulate a transaction
Simulate a call and return success, gas, decoded return, and best-effort state diff / asset changes / logs. Provide a high-level call (address + function + args) or raw (to + data), never both.
読み取り専用
外部アクセスあり
入力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['chain', 'from'], 'properties': {'to': {'$ref': '#/properties/address', 'description': 'Raw form: target address.'}, 'args': {'type': 'array', 'default': [], 'description': 'Function arguments, in order. Pass uint values as decimal strings.'}, 'data': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{2})*$', 'description': 'Raw form: calldata (0x-prefixed hex bytes).'}, 'from': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': "The sender address (the user's wallet). No key is needed â\x80\x94 nothing is signed."}, 'chain': {'anyOf': [{'type': 'string', 'minLength': 1}, {'type': 'integer', 'exclusiveMinimum': 0}], 'description': 'Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.'}, 'value': {'type': 'string', 'pattern': '^\\d+$', 'description': 'Native value in wei (decimal string), for payable functions.'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'rpc_url': {'type': 'string', 'pattern': '^https?:\\/\\/\\S+$', 'description': 'Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids.'}, 'function': {'type': 'string', 'pattern': '\\S', 'minLength': 1, 'description': 'Function name, or full signature like "transfer(address,uint256)" if overloaded.'}}, 'additionalProperties': False}
出力スキーマ
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['success', 'gas_used', 'state_diff', 'asset_changes', 'logs'], 'properties': {'logs': {'type': 'array', 'items': {'type': 'object', 'required': ['address'], 'properties': {'args': {'type': 'object', 'additionalProperties': {}}, 'event': {'type': 'string'}, 'address': {'$ref': '#/properties/state_diff/items/properties/address'}}, 'additionalProperties': True}}, 'revert': {'type': 'object', 'required': ['reason'], 'properties': {'reason': {'type': 'string'}, 'decoded': {'type': 'string'}}, 'additionalProperties': True}, 'success': {'type': 'boolean'}, 'gas_used': {'type': 'integer', 'minimum': 0}, 'state_diff': {'type': 'array', 'items': {'type': 'object', 'required': ['address', 'before', 'after'], 'properties': {'after': {'type': 'string'}, 'before': {'type': 'string'}, 'address': {'type': 'string', 'pattern': '^0x[0-9a-fA-F]{40}$', 'description': '0x contract address.'}, 'slot_label': {'type': 'string'}}, 'additionalProperties': True}}, 'return_value': {'type': 'object', 'required': ['decoded', 'raw'], 'properties': {'raw': {'type': 'string', 'pattern': '^0x([0-9a-fA-F]{2})*$', 'description': 'Raw form: calldata (0x-prefixed hex bytes).'}, 'decoded': {'type': 'array'}}, 'additionalProperties': True}, 'asset_changes': {'type': 'array', 'items': {'type': 'object', 'required': ['address', 'token', 'delta', 'kind'], 'properties': {'kind': {'enum': ['erc20', 'erc721', 'erc1155', 'native'], 'type': 'string'}, 'delta': {'type': 'string', 'pattern': '^-?\\d+$'}, 'token': {'$ref': '#/properties/state_diff/items/properties/address'}, 'symbol': {'type': 'string'}, 'address': {'$ref': '#/properties/state_diff/items/properties/address'}}, 'additionalProperties': True}}}, 'additionalProperties': False}
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最近のツール変更
追加
resolve_name
2026年9月17日12:49
追加
decode_tx
2026年9月17日12:49
追加
prepare_tx
2026年9月17日12:49
追加
simulate
2026年9月17日12:49
追加
encode_call
2026年9月17日12:49
追加
read_contract
2026年9月17日12:49
追加
resolve_abi
2026年9月17日12:49
追加
export_registry
2026年9月17日12:49
追加
registry_stats
2026年9月17日12:49
追加
lookup_selector
2026年9月17日12:49
追加
runtime_metrics
2026年9月17日12:49
追加
list_chains
2026年9月17日12:49
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