# TraceFast Ethereum Address & Name Resolver

> TraceFast Ethereum Address & Name Resolver is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.025/call, status unknown (last checked 2026-10-22).

Resolves an Ethereum address or ENS name to its label, type, presentation metadata, and token identity on mainnet

## Facts

- Endpoint: GET https://mpp.tracefast.xyz/api/v1/chains/1/resolve?utm_source=zero.xyz
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tracefast-ethereum-address-name-resolver-34f780e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DFX1NXeYeD6ZCiM8_sMOA

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tracefast-ethereum-address-name-resolver-34f780e0
```

Example prompt: What is the TraceFast label and address type for 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet?

## When to prefer this

Use this endpoint when you need to resolve or label an Ethereum mainnet address or ENS name with TraceFast's curated knowledge graph — particularly when you want entity type classification and token identity alongside the name, rather than a raw ENS resolver or block explorer scrape. Ideal for enriching transaction data, labeling addresses for display, or identifying whether an address is an EOA, contract, or token.

## Known failure modes

- Invalid address format (not 0x + 40 hex) returns an error
- ENS name not found or not registered returns empty or null result
- Address exists on-chain but has no label in TraceFast knowledge graph, returning minimal metadata
- Rate limit or payment failure returns 402 or 429 status
- Network timeout if Ethereum node is temporarily unavailable

## How this service works

TraceFast live Ethereum data: what a reference means. An address (`0x` + 40 hex) is described — the name TraceFast shows for it, how it presents it, what kind of address it is, its token identity. Query q: What to resolve: an address (`0x` + 40 hex, any case), or a name, ENS…; limit: 1..=20, default 10. Docs: https://docs.tracefast.xyz/api/entity-resolve.md

## Output

Returns the TraceFast-assigned display name, address type classification (e.g. EOA, contract, token contract), token identity information (name, symbol, standard), and presentation metadata for the queried Ethereum address or ENS name on mainnet (chain ID 1).

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tracefast-ethereum-address-name-resolver-34f780e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.tracefast.xyz](https://www.zero.xyz/host/mpp.tracefast.xyz/llms.txt)