Sente: hand your trading strategy to an AI agent that can't break its limits
A trading app for Kuru spot and Perpl perps on Monad, where an agent trades your strategy while you're away, wakes only when the market gives it a reason, and shows you every thought behind its trades.
Turnstile: a market where AI agents pay per query
Agents that find a data seller through ENS, read its price on chain, pay per query over x402 and spend inside a mandate they cannot widen. Overview of the nine-part series.
TVL is not depth: what a Uniswap pool can actually trade
Why a pool's total value locked says little about whether it can take a trade or pay its LPs, and how a paid analyst measures depth, compares it with TVL and says how sure it is.
Sell the answer, keep the method: Chainlink CRE Confidential Workflows
What a confidential workflow is, how Chainlink runs one, how it lets a paid agent sell a verdict without publishing its edge, and where it stops.
Spending mandates for agents: the wallet can never raise its own limit
How to give agents a money cap they cannot touch: a Privy server wallet and a spend policy owned by a separate 2-of-2 key quorum.
Three listings per human: capping an open agent registry with World ID Selfie Check
How a Selfie Check caps Turnstile's open agent registry at three listings per human.
The offer is the name: ENSv2 records and a key split the chain enforces
How Turnstile publishes a seller's price, payment rails and endpoint as ENSIP-25/26 resolver records, lets a hot key change only the price and the MCP endpoint using ENS's Enhanced Access Control, and uses fork tests to prove that key can't redirect the payout. The split limits what each key can do.
A sample of 197 ERC-8004 agents, and where their prices live
We indexed real ERC-8004 agent registrations on Base, Ethereum mainnet and Sepolia with Substreams, The Graph's block-streaming indexer, using one Rust module for all three chains. The registry tells you who exists. What they cost is somewhere else.
One payment interface, four chains
A four-method PaymentRail interface, a registry that turns rails into accepts[], a test that fails the build when a chain name leaks into the service, two Base interop surprises, and selling through a gateway that collects the payment for you.
Gasless nanopayments on Arc, and the nonce that stays at 0
An AI agent paid for eleven queries without ever sending a transaction. How EIP-3009 authorizations and Circle Gateway batching make that work, and who pays for what.
x402 on Hedera: what a paid HTTP request is made of
A seven-cent API call settled through Blocky402: the 402 challenge, a transfer the buyer signs but cannot send, a facilitator that pays the gas, a replay guard, and a receipt anyone can read back.
Bankr's Migration to Doppler Protocol: A Technical Deep Dive
Everything you need to know about the infrastructure upgrade and what it means for micro-cap trading dynamics.
How to read from a smart contract using wagmi v3
Interacting with smart contracts through your React based UI
How to listen for and parse smart contract events using wagmi v3
Interacting with smart contracts through your React based UI
How to call a smart contract using wagmi's v3 useWriteContract hook
Interacting with smart contracts through your React based UI
Is it possible to create upgradeable Minimal Proxy Clone contracts?
Short answer: no, but Upgradeable Beacon Proxies might be what you are looking for
Create your first Subgraph for your smart contract with The Graph
Create, deploy and query your custom subgraph
How to implement EIP-2981 Royalties in your NFT smart contract
Plus marketplaces that already implement the standard
Deploy your first NFT contract with Foundry
Or just any Solidity smart contract