Your Agent Spends.
You Own the Rules.

The spend infrastructure for AI agents. Give any agent a wallet, a budget, and an audit trail — safe, controlled, and enforced onchain.

Quick Install
curl -s https://api.synthesis.usezenithpay.xyz/skill.md
// Any agent · any runtime — works everywhere
$curl -s https://api.synthesis.usezenithpay.xyz/skill.md
→ ZenithPay loaded · 6 tools ready
// Agent task: Research DeFi yields on Base
→ zenithpay_get_limits
$0.25/tx · $3.00/day · $2.75 remaining
→ zenithpay_verify_merchant
stableenrich.dev · safe ✓
→ zenithpay_pay_service
$0.05 · "DeFi research on Base"
Approved · txHash 0x3f2a1b8c…
Logged on Base · block 9841207
agent ~ $
[01] Features

Built for agents that spend.

Hard limits, zero-gas payments, automatic token swaps, and a full audit trail — everything an agent needs to pay safely and autonomously.

Spend Engine

Rules that enforce themselves.

Set per-transaction limits, daily budgets, and merchant allowlists. Deployed onchain — enforced on every payment.

PER TX LIMIT
DAILY BUDGET
MERCHANT ALLOWLIST
ENFORCED
Audit Trail

Every spend, on record.

$0.007exa.ainow
$25.00unknownBLOCKED
$0.010firecrawl2m
$0.007exa.ai5m
Auto-Swap

Any Token in, USDC Out.

FromToRoute
ETHUSDCLocus
USDCUSDCDIRECT SWAP
USDTUSDCLocus
ANYUSDCAUTO-SWAP
Unified Dashboard

One place to manage
every agent.

AgentBalancePolicySpend
RESEARCH AGENT-01$12.40ACTIVE$0.24/D
TRADING AGENT-02$8.75ACTIVE$1.20/D
SCRAPER AGENT-03$2.10PAUSED$0.00/D
[02] How it works

Set up in four steps

From zero to a fully policy-gated agent in minutes.

01
Step 1

Register & fund your agent

Register your agent and it gets a real wallet instatly — fund USDC, and it's ready to spend. No custodians, no monthly fees.

02
Step 2

Set your spend policy

Define per-transaction limits, daily budgets, and which services your agent is allowed to pay. Set it once — enforced on every payment.

03
Step 3

Activate your agents

Sign with your owner wallet to register the agent on Base and attach your SpendPolicy. One onchain transaction links you as controller—after it confirms, your agent can send USDC through Locus with every payment policy-checked.

04
Step 4

Agent spends safely

Every payment is checked against your policy before it executes. Approved payments go through. Anything outside your rules is blocked and logged.

[03] Integrations

Secure your agent in minutes.

One curl command in your terminal. The agent reads SKILL.md, follows the onboarding steps automatically — creates a smart wallet, guides policy activation onchain, then pays with full enforcement.

Works with
Claude CodeClaude CodeOpenClawOpenClawCodexCodexClaude DesktopClaude DesktopCursorCursorGemini CLIGemini CLI
api.synthesis.usezenithpay.xyz/skill.md
// Paste into your agent window — agent reads and follows instructions
$curl -s https://api.synthesis.usezenithpay.xyz/skill.md
→ ZenithPay skill loaded · 6 tools ready
// Agent follows onboarding automatically:
1. POST /wallet/genesis → Locus smart wallet + API key
2. Open onboarding link → set spend policy onchain
3. GET /limits → verify policy is active
4. POST /pay → policy-gated x402 payment
// Works with any agent — not just terminals:
Claude Code·Cursor·Gemini CLI·Codex·Telegram bots
[04] FAQs

Frequently asked questions.

[05] Get started

Give your agent a budget.

Real budgets. Real policies. Real audit trail. Everything your agent needs to spend safely — without you building it from scratch.