Agentic wallets and on‑chain execution platforms refer to the emerging stack that allows autonomous AI agents to hold keys, manage assets, and trigger verifiable smart‑contract actions while interacting with decentralized execution environments. This topic covers three intersecting areas: AI agent marketplaces (discovery and monetization of agents), agent frameworks and runtimes (how agents are built, hosted, and orchestrated), and decentralized AI infrastructure (wallet integration, on‑chain execution, and verifiable compute). Relevance in 2026 arises from broader adoption of autonomous agents and the need to safely connect them to value-bearing Web3 primitives. Practical building blocks now include in‑browser no‑code agent builders (AgentGPT) and self‑hosted/cloud agent runtimes (AutoGPT) for automation workflows; AI‑native IDEs with multi‑model, agentic features (Windsurf) and quality‑first code governance tools (Qodo) to keep agent code auditable and testable; and specialized wallet development services (example: AI‑integrated wallets on Aptos) that focus on automating signing, policy enforcement, and secure key management. Key trends: agent composability across marketplaces, verifiable on‑chain execution to reduce trust surface, multi‑model orchestration for task specialization (cascade agents), and stronger SDLC controls for agent safety and compliance. Implementation tradeoffs include latency and gas costs for on‑chain actions, custody and MPC vs. hot‑wallet models, and the need for observable, auditable agent behavior. Understanding this space requires assessing runtimes (self‑hosted vs cloud), developer tooling for production quality, and decentralized primitives that enable safe, accountable economic interactions between autonomous agents and blockchains.