chain.openverbs.com

Name: chain.openverbs.com service
Creator: Agent GDP
License: https://creativecommons.org/licenses/by/4.0/

The service's listing describes it this way: Call a read-only (view/pure) function on any deployed contract via eth_call and get the decoded result. Give the contract address and a human-readable signature (e.g. 'balanceOf(address) view returns (uint256)') plus args; include return types to decode outputs, else raw hex is returned. Reads allowances, oracle prices and vault/DAO state. Read-only, no signing. Ethereum, Base, Arbitrum, Optimism, Polygon. Website

A service is a tool an AI agent pays to call. chain.openverbs.com is listed on this page under Other, settling on Base. 30-day settled volume on this page is $0.00. The listing comes from the service catalog. Open a row for payments, payers, and chains. See Bazaar, agent payment use cases, and the methodology.

Payee

0xb3f4…194aBase

Methodology · settled volume through 2026-10-25 · catalog Oct 25, 2026, 2:39 PM UTC

Settled volume, payments, payers, average payment, use-case share, and rank
Metric	24h	7d	30d
Volume	$0.00	$0.00	$0.00
Payments	0	0	0
Payers	0	0	0
Avg payment	$0.00	$0.00	$0.00
Share of Other	—	—	—
Rank	—	—	—

Payers can be counted more than once when they paid through more than one facilitator. Rank and share stay blank until they are stored.

Settled volume

$0.00

n/a

Payments

Payers

Avg payment

$0.00

volume / payments

Daily volume and buyers

90D 1Y All

No payments in this period.

Data through Oct 25, 2026. Source: public settlement logs. Methodology

Payers

No payments in this period.

Buyer concentration

—

Top payer's share of lifetime volume. Not the period selected above.

Repeat buyers

—

Lifetime buyers with more than one payment, divided by all buyers.

Endpoints and prices

Price, network, and asset come from the x402 Bazaar catalog.

Endpoint	Network	Asset	Price	Scheme
https://chain.openverbs.com/v1/read-contract Call a read-only (view/pure) function on any deployed contract via eth_call and get the decoded result. Give the contract address and a human-readable signature (e.g. 'balanceOf(address) view returns (uint256)') plus args; include return types to decode outputs, else raw hex is r	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/ens-records Read an ENS name's address plus its text records (avatar, url, email, description, com.twitter, com.github and more) in one call, live from the resolver on Ethereum mainnet. Pass `keys` to fetch specific records, or omit it for a sensible default set. Only records that are set ar	base	USDC	$0.002	exact
https://chain.openverbs.com/v1/decode Turn a 4-byte function selector or full calldata into its human-readable function signature, and (when calldata is present) the decoded argument values. Supply an `abi` for a fully deterministic offline decode, or omit it to look the selector up in public signature registries. Re	base	USDC	$0.004	exact
https://chain.openverbs.com/v1/abi Get the verified contract ABI and verification metadata for a deployed contract by address, sourced from Sourcify. Returns the contract ABI (to decode or call it), contract name, compiler/language, match type, and proxy resolution (is-proxy plus implementation addresses). Support	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/explain Decode a transaction into plain language: native ETH transfer, contract call (with decoded method name for common ERC-20/DEX functions like transfer, approve, swap, mint, multicall) or contract creation; ERC-20 and NFT (ERC-721) transfers it triggered (token, from, to, amount/tok	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/address Native ETH / wallet balance for an address on any EVM chain: native balance (wei + ether), transaction count (nonce), and whether it's a contract or an externally-owned account (with deployed code size). Reads live on-chain data with automatic endpoint fallback.	base	USDC	$0.002	exact
https://chain.openverbs.com/v1/block Live block summary by number, hex, or tag (latest/earliest/pending/safe/finalized; default latest): number, hash, parent, timestamp (unix + ISO), transaction count, gas used/limit, base fee and miner. Reads live on-chain data with automatic endpoint fallback.	base	USDC	$0.001	exact
https://chain.openverbs.com/v1/btc-address Balance and activity for a Bitcoin address (base58 1…/3… or bech32 bc1…): confirmed balance (sats and BTC), total received and sent, confirmed transaction count, and unconfirmed/pending value and tx count from the mempool. On-chain ground truth an agent cannot compute locally.	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/btc-fees Live recommended Bitcoin transaction fee rates (in sat/vB) for next-block, ~30-minute, ~1-hour, economy and minimum confirmation targets, straight from the mempool. Also estimates the total fee (in sats and BTC) for a transaction of the given virtual size, so an agent can pick a	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/btc-mempool Live snapshot of the Bitcoin mempool: number of unconfirmed transactions, total pending virtual size (bytes and MB), the current backlog in blocks, total fees pending (sats and BTC), the fee-rate histogram, and the current chain tip height. Lets an agent gauge network congestion	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/btc-tx Look up a Bitcoin transaction by txid: confirmation status, block height and time, fee (sats), effective fee rate (sat/vB), size, weight and virtual size, input and output counts, and total output value (sats and BTC). On-chain ground truth for verifying a payment.	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/bytecode Fetch deployed EVM contract runtime bytecode and its Keccak-256 code hash to fingerprint or compare contracts, or feed a disassembler. Supports Ethereum, Base, Arbitrum, Optimism and Polygon, with optional historical block reads. Returns full hex code, byte size and isContract; a	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/ens-resolve Resolve an ENS name (like alice.eth) to its Ethereum address, read live from the ENS resolver on Ethereum mainnet. Offchain names such as *.base.eth resolve too. Returns `found:false` (a real answer, not an error) when the name has no address record. Live reads with automatic end	base	USDC	$0.003	exact
https://chain.openverbs.com/v1/ens-reverse Reverse-resolve an Ethereum address to its primary ENS name (the reverse record set by the owner), read live on Ethereum mainnet. Returns `found:false` when the address has no primary name set. Live reads with automatic endpoint fallback.	base	USDC	$0.003	exact
https://chain.openverbs.com/v1/gas Live gas conditions for an EVM chain: current gas price, the latest block's base fee (EIP-1559) and the suggested max priority fee — all in both wei and gwei. Ground truth an agent can't compute. Reads live on-chain data with automatic endpoint fallback.	base	USDC	$0.002	exact
https://chain.openverbs.com/v1/gas-estimate Simulate a transaction before signing: runs `eth_estimateGas` for `{ to, from?, data?, value? }` and returns the estimated gas units and estimated fee (current gas price x gas, in wei + ETH). If the node rejects the call it returns `ok:false` with the decoded `revertReason` (why	base	USDC	$0.004	exact
https://chain.openverbs.com/v1/nft-metadata Resolve one NFT (contract + tokenId) into normalized metadata: name, description, image, attributes and token standard (ERC-721 or ERC-1155). Reads the on-chain tokenURI/uri, then fetches and normalizes the metadata document (ipfs/ar/http/data), rewriting ipfs image links to a ga	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/proxy Detect whether a contract is an upgradeable proxy and resolve its implementation: reads the standard EIP-1967 implementation/admin/beacon slots, EIP-1822 (UUPS), the OpenZeppelin legacy slot, and EIP-1167 minimal-proxy bytecode. Returns the proxy type, implementation, admin and b	base	USDC	$0.004	exact
https://chain.openverbs.com/v1/receipt Live transaction receipt by hash via `eth_getTransactionReceipt`: success/failed status, block number, from/to, created contract address, gas used, cumulative gas, effective gas price (wei + gwei), tx type and the emitted event logs (capped). Complements `tx` (which reads the tra	base	USDC	$0.003	exact
https://chain.openverbs.com/v1/sanctions Screen a crypto wallet address against the OFAC SDN sanctions list (US Treasury Specially Designated Nationals) before transacting. Multi-chain across ~20 assets (BTC, ETH, USDT, TRX, XMR and more); EVM 0x addresses match case-insensitively. Returns whether the address is sanctio	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/source Get the verified Solidity/Vyper source code for a deployed contract by address, sourced from Sourcify. Returns every source file (path + content), the contract name, language, compiler version and compiler settings (optimizer, evmVersion) — the full human-readable source an agent	base	USDC	$0.006	exact
https://chain.openverbs.com/v1/token Live ERC-20 metadata read directly from the contract: name, symbol, decimals and total supply (raw + decimal-formatted). Handles both string and legacy bytes32 name/symbol encodings. Returns `isToken:false` for EOAs or non-token contracts. Reads live on-chain data with automatic	base	USDC	$0.002	exact
https://chain.openverbs.com/v1/token-allowance Live ERC-20 spending allowance an owner has granted a spender: calls `allowance(owner, spender)` on the token and returns the raw amount, a decimal-formatted amount (using the token's decimals) with its symbol, and an `isUnlimited` flag for effectively-infinite approvals. Use it	base	USDC	$0.002	exact
https://chain.openverbs.com/v1/token-balance Live ERC-20 token balance held by a wallet: calls `balanceOf(address)` on the token contract and returns the raw balance plus a decimal-formatted amount (using the token's own decimals) with its symbol. Distinct from `address` (native ETH balance) and `token` (contract metadata).	base	USDC	$0.002	exact

Facilitators used

Facilitator	Volume	Tx	Share
No facilitator mix for this period yet. This list refreshes about once an hour.

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Cite this

APA

Agent GDP. (2026). chain.openverbs.com [Data set]. Retrieved October 25, 2026, from https://agentgdp.io/service/chain.openverbs.com.

MLA

"chain.openverbs.com." Agent GDP, 25 Oct. 2026, https://agentgdp.io/service/chain.openverbs.com.

BibTeX

@misc{agentgdp_chain_openverbs_com_2026,
  author = {{Agent GDP}},
  title = {chain.openverbs.com},
  year = {2026},
  url = {https://agentgdp.io/service/chain.openverbs.com},
  note = {Retrieved October 25, 2026. Data through 2026-10-25. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

chain.openverbs.com: $0.00 settled volume (7d), 0 payments, 0 buyers. Agent GDP, data through 2026-10-25. https://agentgdp.io/service/chain.openverbs.com Retrieved October 25, 2026.

Data from Agent GDP (https://agentgdp.io/service/chain.openverbs.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Payers on a day can be counted more than once if they paid through more than one facilitator. Growth compares this period with the previous period of the same length. The page link uses the service's site when we have one, and the payee address otherwise.

Volume and payment counts include earlier days. Transaction-level detail available from October 23, 2026.

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Cite this

APA

Agent GDP. (2026). Service settled volume [Data set]. Retrieved October 25, 2026, from https://agentgdp.io/service/chain.openverbs.com.

MLA

"Service settled volume." Agent GDP, 25 Oct. 2026, https://agentgdp.io/service/chain.openverbs.com.

BibTeX

@misc{agentgdp_service_settled_volume_2026,
  author = {{Agent GDP}},
  title = {Service settled volume},
  year = {2026},
  url = {https://agentgdp.io/service/chain.openverbs.com},
  note = {Retrieved October 25, 2026. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

Service settled volume. Agent GDP. https://agentgdp.io/service/chain.openverbs.com. Retrieved October 25, 2026.

Data from Agent GDP (https://agentgdp.io/service/chain.openverbs.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).