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An onchain wallet gives your agent the ability to hold funds, authorize transactions, and sign messages. Without one, your agent can read data but can’t pay for services, receive payments, or prove its identity.

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Why your agent needs a dedicated wallet

An AI agent could generate its own wallet by creating a random private key through prompting, but this is unsafe:
  • The private key appears in the agent’s conversation context, where it can be logged, cached, or leaked through middleware
  • Any system with access to the agent’s prompt history could extract the key
  • If the key is compromised, all funds in the wallet are permanently lost
Dedicated wallet services solve this by managing keys in secure infrastructure separated from your agent’s runtime. Your agent requests transactions without ever seeing the private key.

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Choose a wallet

Every Bankr agent gets a cross-chain wallet on Base, Ethereum, Solana, Polygon, and Unichain. Gas is sponsored on supported chains. Built-in swap tools make Bankr ideal for trading agents.Install the Bankr skill from your agent chat:
install the bankr skill from https://github.com/BankrBot/skills
Create a dedicated account at bankr.bot and generate an API key at bankr.bot/api. Don’t use your personal Bankr account — keep your agent’s wallet separate.Bankr docs →
Coinbase’s standalone wallet for AI agents. Authentication is via email OTP — no API keys required in your agent. Private keys stay in Coinbase’s secure infrastructure. Native x402 payment support is built in.Install the pre-built wallet skills:
Terminal
npx skills add coinbase/agentic-wallet-skills
Then ask your agent to authenticate:
Sign in to my wallet with your@email.com
Skills include: authenticate-wallet, fund, send-usdc, trade, pay-for-service, monetize-service, and more. Operates on Base.CDP Agentic Wallet docs →
A multi-chain agent wallet with native x402 payment handling, built-in token swaps, and cross-chain bridges across Base, Ethereum, and Solana. Sponge’s x402 proxy handles discovery, payment, and retries automatically.Register your agent to get a wallet immediately:
Terminal
curl -X POST https://api.wallet.paysponge.com/api/agents/register \
  -H "Sponge-Version: 0.2.1" \
  -H "Content-Type: application/json" \
  -d '{"name": "my-agent", "agentFirst": true}'
Store the returned apiKey:
Terminal
export SPONGE_API_KEY=sponge_live_...
Sponge Wallet docs →
Claude Code, Codex, and OpenCode users — the wallet skills above work with any skills-enabled AI coding tool. Run the same npx skills add command from within your coding tool to get the same onchain capabilities.

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What your agent can do with a wallet

Once your agent has a wallet, it can:
  • Hold : receive and store USDC or other tokens
  • Send and receive payments: transfer funds to other wallets, pay for API access, or receive payments for services
  • Sign messages: cryptographically prove that a message or request came from your agent (used for identity verification)
  • Interact with protocols: call to swap tokens, provide liquidity, or use other onchain services

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Next step

Agent registration

Register your agent for discoverability and identity verification.