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TraceFast Address Attribute History
x402
TraceFast Address Attribute History is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.025/call, status unknown (last checked 2026-10-19).
Returns the complete chronological history of all attribute intervals an Ethereum address has held, including when it became a contract, when code was removed, and when it first held state.
Price / call$0.025
Success—
StatusUnknown
How this service works
TraceFast knowledge graph: every attribute interval an address has held, oldest first — when it became a contract, when its code was removed, when it first held state. Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query limit: 1..=500, default 100. Docs: https://docs.tracefast.xyz/api/address-attribute-history.md
Output
An ordered list of attribute intervals (oldest first) for the specified Ethereum address, each describing a specific attribute the address held (e.g. 'is_contract', 'has_code', 'has_state'), along with the block or timestamp range during which that attribute was active. Supports pagination via the limit parameter (1–500, default 100).
Example use cases
Investigate smart contract deployment lifecycle
“Can you pull the complete attribute history for 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum? I want to see exactly when it became a contract and every attribute change since, oldest first.”
Detect contract self-destruct events
“Has the contract at 0xdAC17F958D2ee523a2206206994597C13D831ec7 ever had its code removed? Pull its full attribute interval history so I can check for any code removal events.”
Audit address state history for compliance
“I need a timeline of every attribute phase the address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 has gone through on Ethereum — when it first held state, when it became a contract, all of it, going back to the beginning.”
Technical details
Endpoint
GEThttps://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/attributes/history?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the full chronological lifecycle of an Ethereum address's attributes — specifically to understand when it transitioned between states (e.g., became a contract, had code removed, first held storage). Prefer this over live contract endpoints when historical context matters, or over single-attribute proof endpoints when you need the complete timeline rather than evidence for one specific attribute.
Side effects
- Invalid or malformed address (not 0x-prefixed or not 40 hex chars) returns a 400 error
- Address with no recorded attribute history returns an empty list
- Limit parameter outside 1–500 range returns a validation error
- Payment not provided or insufficient USDC balance triggers 402 Payment Required
- Chain ID not supported returns a 404 or unsupported chain error
- Rate limiting may return 429 if too many requests are made
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Tags
x402
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