Contracts API

Is this address a verified contract

Whether an address holds bytecode, whether its source is published and verified, its compiler and licence, and whether it is a proxy pointing at an implementation.

GET/api/external/contract-analysis/contract-source/{chain}/{address}

Get a free API key Try it in the API reference

What it returns

Verification status, source, ABI and proxy relationship for ANY address — a token, a router, a pool, a vault, or a plain wallet. verified is false, not null, whenever this deployment could establish there is no published source — that covers a genuine unverified contract AND a wallet (nothing was ever published for either); read addressKind to tell them apart. addressKind is null only when this deployment could not determine what kind of address it is (no chain-level code read answered for this chain); the rest of the answer is unaffected. On a chain where most contracts are minimal-proxy clones, verified: false is the common answer even for a real, in-use contract — isProxy and implementation are still populated in that case, independent of verification. isProxy is false, not true, for a 'delegated-wallet': an EIP-7702 delegation is a revocable, self-authorised delegation on an EOA, a materially different trust model from a contract proxying calls, even though implementation may still carry the address it currently delegates execution to wherever this deployment can see that. Every field is null when nothing could be established at all (the underlying data source could not be reached), which is different from a measured false.

Chains

BNB Chain BNB
Ethereum ETH
Stable STABLE
Base BASE
Robinhood Chain RHC

Request

Send your key in the x-dex-data-key header. Replace each <placeholder> with a real value.

curl -H "x-dex-data-key: $DEXDATA_API_KEY" \
  "https://api.dexdata.io/api/external/contract-analysis/contract-source/BNB/<address>"

Parameters
Parameter	Description
`chain` path · string · required	The chain the address lives on. ETH, BNB, BASE, STABLE and RHC are served; SOL and ARC both return 400. CELO, ARB, OP and SCROLL return 400 here.
`address` path · string · required	The address being asked about — it may or may not turn out to be a contract; the response says which.

Response fields

A JSON response. Every field is always present; null means the value could not be established, never zero.

Response fields of Is this address a verified contract
Field	Type
`verified`	boolean \| null
`contractName`	string \| null
`compilerVersion`	string \| null
`compilerType`	string \| null
`optimizationUsed`	boolean \| null
`optimizationRuns`	number \| null
`evmVersion`	string \| null
`licenseType`	string \| null
`abi`	any[] \| null
`sourceCode`	string \| null
`sourceLength`	number \| null
`isMultiFileFormat`	boolean \| null
`isProxy`	boolean \| null
`implementation`	string \| null
`addressKind`	string \| null

Price per call

BNB Chain, Ethereum, Stable, Base: 14 credits
Robinhood Chain: 1 credit

Charged only when the call succeeds. Prices as of 2026-10-30; the current ones are always in the API reference.

The address lookup tables an authority controls
Same inputs: address, chain.
What a contract can do to a holder
What approving this address would allow, rather than whether its code is published.
Call a read-only contract function
The verified source and ABI say which functions there are to call.
Read a contract's storage slots
The verified source says which variable lives in which slot.
The most recently verified contracts on a chain
One listed contract's full verified source and ABI.
Most-called contracts on a chain, by window
Learn what a contract on this list is, from its published source where there is one.

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