Explore
Evidence for your next connection.
Independent measurements of remote MCP servers. Every observation has a timestamp.
Read-only probesMCP server · Payments & trading
Discover and call 2,000+ x402 machine-payable services through one graded API key + gateway.
2 failed · 8 not measured
Median of successful probes over 7 days
Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.
Tool definitions returned by this server
Independent monitoring
Outdated check
Last connection measurement is over 24 hours old. Current availability is unknown.
Last checked| Test area | Passed | Failed | Unmeasured |
|---|---|---|---|
ConnectionCan a client connect and discover tools? | 5 | 0 | 0 |
Reliability & speedDoes it respond consistently and quickly? | 0 | 0 | 4 |
Access & authenticationWhat is required to use this server? | 1 | 0 | 2 |
Tool qualityAre the tool definitions usable by an agent? | 3 | 1 | 0 |
Publisher identityCan the publisher be traced to its source? | 3 | 1 | 2 |
Unmeasured means there is not enough evidence to decide. How these checks work
Start using graded-x402
Choose your client, copy the configuration, then enable the server in your client’s MCP settings.
Run this command in your terminal, then restart Claude Code.
Claude Code
claude mcp add --transport http graded-x402 https://graded.sh/mcpCapabilities
Your balance, totals, limits, and recent calls. Requires Authorization: Bearer <gwk_ key>.
DiscoveredCall a catalog service through the gateway. The gateway pays the upstream x402 USDC price from its own wallet and deducts your prepaid credits (upstream price + 25% markup, min $0.005). Requires an account key with credits.
DiscoveredCreate a gateway account. Returns your secret key (gwk_…) - store it; it is shown only once. New accounts start at 0 credits.
DiscoveredOne-time: mint a separate OWNER key (gwo_…) for the human supervisor. After this, the gwk_ agent key can spend and TIGHTEN limits but never loosen or clear them; only the owner key can. Shown once - the human should store it where the agent can't read it. Requires Authorization: Bearer <gwk_ key>.
DiscoveredCreate a hosted card-payment link (Stripe Checkout) that adds $5, $10 or $20 of credits to YOUR account. Give the returned url to your human to open and pay - no crypto wallet needed; credits land 1:1 within seconds of payment. Requires Authorization: Bearer <gwk_ key>.
DiscoveredFull detail for one catalog service: grade breakdown, live price, our price (incl. markup), input schema, output example. Free.
DiscoveredDaily probe history for one catalog service (UTC days): uptime %, 402/2xx %, p50/p95 latency, grade per day, price changes, probe counts. Probed every 6 hours. Free.
DiscoveredSearch the graded catalog of x402 services (the x402 Bazaar + independent indexes), ranked by real 30-day demand and agent-usability grade (A-F). Free.
DiscoveredConfigure YOUR account's spending guardrails, enforced on every call_service: max_call_usd (refuse any call charging more), daily_usd (rolling-24h charge budget), min_grade (refuse services graded below it), allow (exact service-id allowlist). Send only fields to change; null clears a field. Requires Authorization: Bearer <gwk_ key>.
DiscoveredHow to add credits (x402 USDC, or a card checkout link via create_topup_link).
DiscoveredRecent measurements
| Checked | Result | Response | Tools |
|---|---|---|---|
| Connected | 624 ms | 10 |