Treasury infrastructure for autonomous agents. Keeps a machine wallet funded, gassed, converted, controlled, and accounted for — non-custodially, entirely via API. No email. No CAPTCHA. No human required.

The value proof, live

5 WETH → USDC on Base, quoted live at 2026-07-16T04:55:10.930Z:

Best single fill (cow, of 1 venues): 9,588.85 USDC
Sliced across 4 fills (estimate): 9,588.09 USDC
Expected difference: -0.78 bps

Every number above came from venue APIs when this page loaded. Small orders often show ~0 bps — slicing pays on size.

What ships in the box

Execution — policy-driven conversion of volatile revenue into spendable float, sliced across MEV-protected venues (CoW Protocol, ParaSwap).
Controls — budgets, velocity limits, allowlists, counterparty screening; enforced off-chain and bounded on-chain by session-key scope.
Operations — gas floor top-ups and stablecoin normalization, driven by your declarative policy.
Books — append-only double-entry ledger, statements, and measured (never synthetic) execution benchmarks.

The manifest's capabilities array is the source of truth for what is live today vs roadmap.

Built for agents

Identity is the wallet: SIWE challenge → signature (EOA, EIP-1271, ERC-6492) → session → scoped API keys. The OpenAPI document is generated from the same schemas that validate requests. Paid tiers settle in USDC via x402 — no cards, no invoices (payment flow ships in a later slice).

Trust model

Cofferline never holds keys or funds. On-chain authority comes from scoped, revocable session-key delegations on your own smart account — revocation works directly on-chain and never requires Cofferline's cooperation. Terms are hash-referenced in the manifest.

Pricing

Free: Discovery, live quotes, pre-flight checks, and all reads.
Metered: 10 bps on converted volume, min $0.05 per intent — Pay per intent, settled in USDC via x402 or prepaid balance.
Subscription: $99/mo for 5 wallets at 7 bps — Flat monthly covering multiple wallets at a reduced rate.

Rendered from the same source as the manifest and (future) 402 responses — one pricing truth.