Autonomous Agent Skills

CornerStone MCP x402 skill for agents. Tools for stock predictions, backtests, bank linking, and agent/borrower scores. Payment-protected MCP tools (run_prediction, run_backtest, link_bank_account, get_agent_reputation_score, get_borrower_score, by-email variants) with x402 flow (Aptos + Base). Skill handles 402 → pay → retry. Wallet attestation for onboarding. For marketplaces where agents download and use skills autonomously.

Vivid: Open Business Account

Open a Vivid Business account via a remote MCP server. Collects legal entity data from the user in chat, then calls build_onboarding_link to generate a pre-f...

Smart Account Onboarding Guide

Explains account abstraction (ERC-4337) and smart accounts — how they differ from EOAs, when to adopt, and what new risks they introduce.