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TraceFast Address Counterparties
x402
TraceFast Address Counterparties is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Returns up to 100 top counterparty addresses that an Ethereum address has interacted with, ranked by transaction frequency across top-level calls, internal calls, and token transfers
Price / call$0.1
Success—
StatusUnknown
How this service works
TraceFast knowledge graph: top counterparties of an Ethereum address, current or as of a block. Up to 100 addresses it interacts with most, ranked by successful transactions across top-level calls, internal calls and token transfers, each with transaction counts and first/last block. Path address: 0x-prefixed, 40 hex. Query block: integer, state at the end of this block, absent = current; limit: integer 1..100, default 100. Docs: https://docs.tracefast.xyz/api/address-counterparties.md
Output
A ranked list of up to 100 Ethereum addresses that the queried address has interacted with most, including: counterparty address, total successful transaction count (across top-level calls, internal calls, and token transfers), and the first and last block numbers of interaction. Results are ordered by interaction frequency descending.
Example use cases
DeFi wallet interaction audit
“Give me the top 50 counterparties of Ethereum address 0xAbCd1234...5678 so I can audit which protocols and wallets it's been interacting with most.”
Historical counterparty snapshot
“Pull the top 100 counterparties of 0x742d35Cc6634C0532925a3b844Bc454e4438f44e as of block 18500000 — I want to see the interaction landscape before that date.”
Whale behavior mapping
“Who are the most frequent transaction partners of 0x28C6c06298d514Db089934071355E5743bf21d60? I'm trying to understand this whale's on-chain network.”
Technical details
Endpoint
GEThttps://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/counterpartiesWhen to prefer
Use this endpoint when you need to map the social or transactional graph of a specific Ethereum address — especially to identify key counterparties, frequent contract interactions, or token transfer partners. It is ideal for compliance checks, whale tracking, DeFi due diligence, and on-chain behavior analysis. Choose this over raw transaction APIs when you want pre-ranked, deduplicated counterparty summaries rather than raw transaction lists. The optional block parameter makes it uniquely suited for historical snapshots at a specific chain state.
Side effects
- Invalid Ethereum address format (not 0x-prefixed 40 hex characters) returns an error
- Block number out of range or not yet mined returns an error
- Limit outside 1–100 range returns a validation error
- Address with no on-chain history returns an empty list
- Payment not included or insufficient triggers x402 payment required response
- Network or RPC timeout returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Tags
x402
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