Network and facilitator fit
Cross-check the declared network and asset against the current facilitator documentation and the endpoint's intended buyer flow. Support is time-sensitive, so the memo records the source date and assumptions.
Choose a payment rail your x402 endpoint can actually support.
The chain name is only one part of an agent payment decision. Ontario reviews one endpoint or proposed endpoint against current facilitator and network support, payment metadata, agent budget constraints, and discovery requirements, then returns a concise go, fix, or compare memo.
$99one-time invoice after scope
1 endpointone primary rail and fallback when relevant
Free firstuse the verifier and comparison first
No custodynever send private keys or signatures
A decision memo, not a chain popularity claim
Payment contract parity
Compare the live HTTP 402 challenge with the manifest, OpenAPI, price, asset, resource URL, and network fields an agent will inspect before signing.
Agent budget fit
Translate the stated task and price into an allow, review, or deny condition. The memo flags where a rail choice is actually a price, schema, or policy problem.
Go, fix, or compare next steps
Get one short decision with concrete blockers, a suggested primary/fallback configuration, and the next free check to run after changes. No ranking or revenue promise is attached.
Four bounded steps
01 · Start free
Use Ontario's readiness verifier, the Bazaar check, or the pricing calculator.
02 · Send one scope
Provide one public endpoint or proposed endpoint, the buyer constraints, and the rails you are considering.
03 · Review evidence
Ontario compares observable protocol and metadata evidence with current official network/facilitator documentation.
04 · Upgrade only if needed
If the endpoint needs catalog or MCP implementation work, the memo can point to the existing $199 activation review.
Why this exists
The wrong rail is often the wrong contract
A provider can choose a supported network and still publish a stale price, mismatched asset, malformed 402 response, or unusable discovery schema. The useful decision is not “which chain wins?” It is “can this exact endpoint be evaluated and paid by the buyers I want?”
Ontario provides observable readiness and fit signals. It does not provide investment advice, guarantee facilitator support after the review date, execute settlement, hold funds, guarantee endpoint safety, or promise traffic, ranking, acceptance, or revenue.
$99
One-time rail-fit memo
- One endpoint or proposed endpoint
- One primary rail and fallback when relevant
- One-page decision and remediation list
- Invoice only after scope is accepted