MCP servers · Plaid · MCP server
Connect Codex CLI to Plaid
One line gives Codex CLI your Plaid account as tools: 9 endpoints, links, accounts, transactions, called with your own connection. No key in the prompt, a receipt for every call, revoke Codex CLI's access alone any time.
Three steps
- Create a free 0n3 account and connect Plaid. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
- Ask Codex CLI: whoami. Then: "Create a link token in Plaid".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"
Add it to your shell profile so Codex finds it next time.
The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.
What Codex CLI can then do in Plaid
Links · Create link tokens and exchange public tokens1
Create a link token
POST /link/token/createAccounts · List accounts and get balances2
Get accounts
POST /accounts/getGet a balance
POST /accounts/balance/getTransactions · List and sync transactions2
Get transactions
POST /transactions/getSync transactions
POST /transactions/syncIdentity · Retrieve identity information1
Get an identity
POST /identity/getAuth · Get account and routing numbers1
Get an auth
POST /auth/getMore · Everything else this app exposes.2
Exchange public token
POST /item/public_token/exchangeGet institutions
POST /institutions/getPlaid in other AI clients
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