Your agent shouldn't buy the first service it finds.
Point Tender at several paid agent services that do the same job. It buys from each, measures what actually comes back, and ranks them by value — with a settled on-chain transaction as proof for every purchase.
One tool call. A real shopping trip.
Tender is an A2MCP service. An agent calls one tool with the competing endpoints; Tender does the shopping and returns a ranked scorecard with evidence.
Probe each service
Reachability, MCP handshake, and a valid x402 paywall — Tender confirms each candidate can actually be bought from before spending anything.
Buy from every one
Tender makes one real, settled purchase from each service and records the price paid, the response latency, and how much it actually delivered.
Rank by value
A transparent score — price 45%, latency 25%, delivery 30% — crowns the best value and explains, in plain language, why each service placed where it did.
Real purchases. Real receipts.
Every Tender verdict is backed by an on-chain settlement, not a simulation. A broken service that takes payment and delivers nothing is caught and excluded — it can never win on price alone.
Settlement runs on public infrastructure with the payer holding a bounded, capped wallet. Same inputs, same verdict, every time.
Tender compares them all.
Scanners and guards tell you whether a single service is safe. Tender answers the question a buyer actually has: of the services that all claim to do this, which is the best value right now?