Ignacio Pastor Sánchez · Blog https://ignaciopastorsanchez.com How I build AI agents, MVPs and smart contracts: write-ups of real projects, with the code, the numbers and what went wrong. The AI posts also go out as Moveseventyeight on Substack. en-us Thu, 12 Nov 2026 00:00:00 GMT <![CDATA[Sente: hand your trading strategy to an AI agent that can't break its limits]]> https://ignaciopastorsanchez.com/blog/sente-ai-trading-agents-on-monad https://ignaciopastorsanchez.com/blog/sente-ai-trading-agents-on-monad Thu, 12 Nov 2026 00:00:00 GMT Deep Dive AI Agents Trading Monad TypeScript <![CDATA[Turnstile: a market where AI agents pay per query]]> https://ignaciopastorsanchez.com/blog/turnstile-overview https://ignaciopastorsanchez.com/blog/turnstile-overview Wed, 14 Oct 2026 00:00:00 GMT Deep Dive AI Agents Agent Payments x402 <![CDATA[TVL is not depth: what a Uniswap pool can actually trade]]> https://ignaciopastorsanchez.com/blog/the-graph-uniswap-paid-liquidity-analyst https://ignaciopastorsanchez.com/blog/the-graph-uniswap-paid-liquidity-analyst Tue, 13 Oct 2026 00:00:00 GMT Deep Dive AI Agents The Graph DeFi Indexing <![CDATA[Sell the answer, keep the method: Chainlink CRE Confidential Workflows]]> https://ignaciopastorsanchez.com/blog/chainlink-cre-confidential-workflows-sell-the-answer https://ignaciopastorsanchez.com/blog/chainlink-cre-confidential-workflows-sell-the-answer Mon, 12 Oct 2026 00:00:00 GMT Deep Dive AI Agents Chainlink Smart Contracts Security <![CDATA[Spending mandates for agents: the wallet can never raise its own limit]]> https://ignaciopastorsanchez.com/blog/privy-spending-mandates-key-quorums https://ignaciopastorsanchez.com/blog/privy-spending-mandates-key-quorums Sun, 11 Oct 2026 00:00:00 GMT Deep Dive AI Agents Agent Payments Security TypeScript <![CDATA[Three listings per human: capping an open agent registry with World ID Selfie Check]]> https://ignaciopastorsanchez.com/blog/world-id-selfie-check-abuse-control https://ignaciopastorsanchez.com/blog/world-id-selfie-check-abuse-control Sat, 10 Oct 2026 00:00:00 GMT Deep Dive AI Agents World ID Security Backend <![CDATA[The offer is the name: ENSv2 records and a key split the chain enforces]]> https://ignaciopastorsanchez.com/blog/ensv2-agent-offer-records-hot-cold-keys https://ignaciopastorsanchez.com/blog/ensv2-agent-offer-records-hot-cold-keys Fri, 09 Oct 2026 00:00:00 GMT Deep Dive AI Agents ENS Smart Contracts Security <![CDATA[A sample of 197 ERC-8004 agents, and where their prices live]]> https://ignaciopastorsanchez.com/blog/erc8004-agent-discovery-substreams https://ignaciopastorsanchez.com/blog/erc8004-agent-discovery-substreams Thu, 08 Oct 2026 00:00:00 GMT Deep Dive AI Agents Indexing The Graph <![CDATA[One payment interface, four chains]]> https://ignaciopastorsanchez.com/blog/chain-agnostic-x402-seller-payment-rails https://ignaciopastorsanchez.com/blog/chain-agnostic-x402-seller-payment-rails Wed, 07 Oct 2026 00:00:00 GMT Deep Dive Agent Payments x402 Backend TypeScript <![CDATA[Gasless nanopayments on Arc, and the nonce that stays at 0]]> https://ignaciopastorsanchez.com/blog/gasless-nanopayments-eip3009-circle-gateway-arc https://ignaciopastorsanchez.com/blog/gasless-nanopayments-eip3009-circle-gateway-arc Tue, 06 Oct 2026 00:00:00 GMT Deep Dive AI Agents Agent Payments x402 <![CDATA[x402 on Hedera: what a paid HTTP request is made of]]> https://ignaciopastorsanchez.com/blog/x402-on-hedera-blocky402-paid-http https://ignaciopastorsanchez.com/blog/x402-on-hedera-blocky402-paid-http Mon, 05 Oct 2026 00:00:00 GMT Deep Dive AI Agents Agent Payments x402 Hedera <![CDATA[Bankr's Migration to Doppler Protocol: A Technical Deep Dive]]> https://ignaciopastorsanchez.com/blog/bankr-s-migration-to-doppler-protocol-a-technical-deep-dive https://ignaciopastorsanchez.com/blog/bankr-s-migration-to-doppler-protocol-a-technical-deep-dive Tue, 24 Feb 2026 00:00:00 GMT DeFi Deep Dive Ethereum <![CDATA[How to read from a smart contract using wagmi v3]]> https://ignaciopastorsanchez.com/blog/how-to-read-from-a-smart-contract-using-wagmi-v3 https://ignaciopastorsanchez.com/blog/how-to-read-from-a-smart-contract-using-wagmi-v3 Tue, 10 Feb 2026 00:00:00 GMT Tutorial Wagmi Frontend <![CDATA[How to listen for and parse smart contract events using wagmi v3]]> https://ignaciopastorsanchez.com/blog/how-to-listen-for-and-parse-smart-contract-events-using-wagmi-v3 https://ignaciopastorsanchez.com/blog/how-to-listen-for-and-parse-smart-contract-events-using-wagmi-v3 Tue, 03 Feb 2026 00:00:00 GMT Tutorial Wagmi Frontend <![CDATA[How to call a smart contract using wagmi's v3 useWriteContract hook]]> https://ignaciopastorsanchez.com/blog/how-to-call-a-smart-contract-using-wagmis-usewritecontract-hook https://ignaciopastorsanchez.com/blog/how-to-call-a-smart-contract-using-wagmis-usewritecontract-hook Fri, 02 Jan 2026 00:00:00 GMT Tutorial Wagmi Frontend Smart Contracts <![CDATA[Is it possible to create upgradeable Minimal Proxy Clone contracts?]]> https://ignaciopastorsanchez.com/blog/upgradeable-beacon-proxy https://ignaciopastorsanchez.com/blog/upgradeable-beacon-proxy Fri, 22 Dec 2023 00:00:00 GMT Deep Dive Solidity Smart Contracts Security <![CDATA[Create your first Subgraph for your smart contract with The Graph]]> https://ignaciopastorsanchez.com/blog/create-your-first-subgraph-for-your-smart-contract-with-the-graph https://ignaciopastorsanchez.com/blog/create-your-first-subgraph-for-your-smart-contract-with-the-graph Thu, 05 Oct 2023 00:00:00 GMT Tutorial The Graph Indexing NFT <![CDATA[How to implement EIP-2981 Royalties in your NFT smart contract]]> https://ignaciopastorsanchez.com/blog/how-to-implement-eip-2981-royalties-in-your-nft-smart-contract https://ignaciopastorsanchez.com/blog/how-to-implement-eip-2981-royalties-in-your-nft-smart-contract Tue, 12 Jul 2022 00:00:00 GMT Tutorial Solidity NFT Security <![CDATA[Deploy your first NFT contract with Foundry]]> https://ignaciopastorsanchez.com/blog/deploy-your-first-nft-contract-with-foundry https://ignaciopastorsanchez.com/blog/deploy-your-first-nft-contract-with-foundry Tue, 05 Jul 2022 00:00:00 GMT Tutorial Foundry Solidity NFT