Pricing
Subscription or per use. Settled in crypto.
Subscription
Monthly plans.
Practitioner
An individual safety engineer or consultant.
$90/ month
- Access to released tools for one user
- Documentation and analysis history retained for that user
- Usage-based charges billed on top, at the rates below
Team
A plant safety team working on shared assets.
$450/ month
- Shared workspace for up to ten users
- Shared documentation, risk records and action tracking
- API access for internal systems
- Usage-based charges billed on top, at the rates below
Operator
A site or group with its own requirements.
On request
- Scope, retention and access agreed case by case
- Data residency and confidentiality terms
- Direct support from the people building the tools
Pay per use
Usage-based rates.
| Unit | Rate | Agent payable |
|---|---|---|
A safety document ingested, parsed and indexed. per document | $2.50 | x402 on Base |
A risk analysis session captured and structured. per session | $40 | Human checkout |
A single API call against the risk knowledge base. per call | $0.02 | x402 on Base |
Settlement
Accepted chains and assets.
Bitcoin
SubscriptionBTC
Suited to subscription payments, where a single settlement per month absorbs the fee and confirmation time. Not suited to per-use billing, and x402 cannot operate here at all: the protocol depends on EIP-3009 signed authorisations, which require smart contracts.
Receiving address
bc1qvqqjmpw0ugtefm0nxhacwysf3mfc2u9rf5zr8p
Ethereum
SubscriptionETH · USDC
Suited to subscription payments. Mainnet gas makes per-call billing uneconomic — a settlement can cost more than the call it pays for — and x402 does not list Ethereum mainnet among its supported networks.
Receiving address
0x707ba88e6428f0CFb7cf37C46FdA1ba6775469c7
Base
x402ETH · USDC
The settlement layer for everything usage-based. Fees are low enough that a single API call can carry its own payment, which is what makes agent-driven pay-per-use viable at all.
Receiving address
0x707ba88e6428f0CFb7cf37C46FdA1ba6775469c7
Solana
SubscriptionSOL · USDC
Accepted for subscription payments. x402 does support Solana, so agent payments could settle here too — PSRI keeps them on a single chain for now, because one settlement path is one path to get right.
Receiving address
DEKFN5jwR8MpfN4Lpa8vNRjje2mcCGKzX6V9PwA4qLQx