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TraceFast Address Relation History
x402
TraceFast Address Relation 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 full ordered history of knowledge-graph relation intervals an Ethereum address has held, either as subject or object, oldest first
Price / call$0.025
Success—
StatusUnknown
How this service works
TraceFast knowledge graph: every relation interval an address has held, oldest first — as the subject (`direction=subject`: what it pointed at, default) or as the object (`direction=object`: who pointed at it). Path address: The address, `0x`-prefixed, 40 hex characters, any case. Query direction: `subject` (default) or `object`; limit: 1..=500, default 100. Docs: https://docs.tracefast.xyz/api/address-relation-history.md
Output
An ordered list of relation intervals (oldest first) for the specified address, each describing a graph edge the address held as subject or object — including what it pointed at or who pointed at it, along with the interval's start and end block/timestamp metadata.
Example use cases
Auditing a DeFi protocol's graph links
“Show me every knowledge-graph relation interval that 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D has ever held as the subject on Ethereum — I want to trace how Uniswap's router has been linked over time, give me up to 500 results.”
Tracing who pointed at a wallet
“Which addresses have ever pointed at 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B in the TraceFast knowledge graph? Use direction=object and return up to 100 results.”
Investigating a flagged contract's relationship history
“I need to audit this suspicious contract — can you fetch every relation interval for 0x00000000219ab540356cBB839Cbe05303d7705Fa from TraceFast, both directions, starting with the oldest, limit 200?”
Technical details
Endpoint
GEThttps://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relations/history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need the complete temporal history of knowledge-graph edges for a specific Ethereum address — especially when you care about directionality (who the address pointed at vs. who pointed at it) and interval ordering. Prefer this over live transaction endpoints when you need graph-layer semantic relationships rather than raw transaction data, and over attribute history endpoints when you want relational edges rather than scalar property changes.
Side effects
- Invalid or malformed address (not 40 hex chars, missing 0x prefix) returns a 400 error
- Direction value other than 'subject' or 'object' returns a validation error
- Limit outside 1–500 range returns a validation error
- Address with no recorded relation history returns an empty result set
- Payment failure or insufficient USDC balance returns a 402 error
- Rate limiting or upstream node unavailability returns a 503 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Tags
x402
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