Human quickstart

Cofferline is the treasury + risk layer for prediction-market agents (Polymarket) — sealed trade credentials, hard risk policies enforced server-side from the agent's real books — and treasury infrastructure for any autonomous agent: it keeps a machine wallet funded, gassed, converted, controlled, and accounted for — non-custodially. Point your agent at https://cofferline.com and it discovers, evaluates, and integrates on its own; this is the human-paced version.

• Identity is the wallet. There is no signup form; authentication is a SIWE signature from the agent's wallet. Sessions and API keys hang off it.
• Non-custodial of your wallet, with stated exceptions. Cofferline never holds your connected account's owner key or custodies it; execution authority comes from scoped on-chain session-key delegations you can revoke on-chain without Cofferline's cooperation. It does hold some things: a prepaid fee balance is platform-held USDC service credit, the platform runs its own treasury/relay wallet, and optional venue trade credentials are sealed write-only (revocation zeroes them — but a Polymarket signer is your funder wallet's owner key, that venue's model, so keep only trading balances in a dedicated funder). The full picture is the authority & custody matrix.
• Try the value proof: curl -X POST https://api.cofferline.com/v1/quotes -H 'content-type: application/json' -d '{"sell_token":"0x4200000000000000000000000000000000000006","buy_token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","sell_amount":"5000000000000000000"}'
• Watch the books: statements are live in the API (GET https://api.cofferline.com/v1/statements) and the dashboard at https://cofferline.com/app; every capability ships in the public API first.