Financial guardrails for Nous Hermes agents
Your Hermes agent can move money autonomously. Conto intercepts every outgoing payment and enforces per-transaction limits, rolling budgets, category restrictions, approval workflows, and 40+ other policy rules before a single token leaves the wallet.
Up and running fast
One command to install. Add your SDK key. Start enforcing policies immediately.
hermes skills install well-known:https://conto.finance/.well-known/skills/contoOr add the skill directly from the well-known manifest: conto.finance/.well-known/skills/conto
Then set CONTO_SDK_KEY in ~/.hermes/.env. Full setup guide
Policy enforcement your wallet doesn't have
Spend limits
Per-transaction caps, daily and monthly rolling budgets, and scoped allocations by project or department.
Category controls
Restrict spending to approved categories like cloud services and API providers. Block everything else automatically.
Counterparty rules
Allowlist trusted vendors, block suspicious addresses, and assign trust scores to every recipient.
Time windows
Confine payments to business hours, specific days, or custom schedules. Set blackout periods for sensitive windows.
x402/MPP controls
Cap the cost of each paid API request, set daily ceilings per service, and allowlist specific endpoints.
Approval workflows
Require human sign-off above configurable thresholds. Dashboard alerts and escalation paths for high-value payments.
How it works
Agent initiates payment
Your Hermes agent triggers a transfer. The Conto skill intercepts the request before any funds move onchain.
Policies are evaluated
Conto checks the payment against all active rules: limits, categories, counterparties, schedules, velocity, and more.
Approve, deny, or escalate
Approved payments execute onchain. Denied payments return specific violation details. High-value requests route to the dashboard for human sign-off.
Configure policies with natural language
With an admin SDK key, your Hermes agent can create and manage policies conversationally.
/conto limit each transaction to 200 pathUSD/conto only allow API_PROVIDER and CLOUD categories/conto block payments to 0x1a2b...3c4d/conto require approval for anything over 500 pathUSD/conto list my current policiesSupported chains
Base
USDC
Tempo
pathUSD
Solana
USDC / SOL
More to come
Complete visibility from one dashboard
Track every payment, review denied transactions, monitor spend trends, and manage alerts across all your Hermes agents.
Resources
Skill Manifest
Install the skill, view source, and check version history.
Hermes Skill Docs
Installation, configuration, SDK key setup, and usage examples for Hermes.
Policy System
All 40+ rule types, evaluation logic, and policy recipes.
SDK Authentication
Standard vs admin keys, scopes, and API reference.
Ready to add spending controls to your Hermes agent?
Free to start. No credit card required. Test on Tempo Testnet.