karte.
karte.
Returns hourly surface concentrations from the CAMS European air-quality ensemble for a point in the cached DACH and Central Europe area. Available pollutants are CO, NO2, NO, O3, PM2.5, PM10 and SO2. Values come from the nearest 0.1 degree model cell and are labelled as a regional forecast rather than a street-level sensor reading. The local cutout is refreshed independently of paid calls, so Copernicus processing latency is not passed to the caller.
Live
Last successful check: 28 Oct 2026, 03:42 UTC.
- answered, last 24 hours
- 100%
- answered, last 30 days
- 100%
2 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments
How addrbook checks →Evidence
1 of 4 shown
Answers when askedShown
Answered a check 13 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 2 days; 30 are needed.
Independent paying walletsNot shown
2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.
Decided by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.
Connect
https:x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.
Who's behind it
- Listed by
- x402 Bazaarlast seen UTC
- Wallets named
- 0x2880edfff13100677bf97a3cbdf3bc34771c4e5enamed by x402 Bazaar
- Proven to belong to it
- Nothing yet. Is it yours?
- Listed since
Payments
- different wallets paid it, last 30 days
- 2
- paid calls, last 30 days
- 2
- last paid call (UTC)
As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.
How it asks to be paid
| Network | Price | Paid in | Settled by | Pays to |
|---|---|---|---|---|
| Base | $0.005 | USDC | Per request | 0x2880edfff13100677bf97a3cbdf3bc34771c4e5e |
From its own 402 answer at UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read
Checks by endpoint
| Host | Protocol | State | Last checked (UTC) | Last answered (UTC) | 24 hours | 30 days | Tools |
|---|---|---|---|---|---|---|---|
| karte. | x402 | Live | 100% | 100% | — |
History
- Payment terms first read: $0.005 on Base, paid to 0x2880edfff13100677bf97a3cbdf3bc34771c4e5e.https://karte.halowerk.com/v1/air-quality#456091
- First recorded as answering.https://karte.halowerk.com/v1/air-quality#456090
- Listed by the x402 Bazaar. The listing names wallet 0x2880edfff13100677bf97a3cbdf3bc34771c4e5e. (already true when recording began)the x402 Bazaar#76909
Also listed as
Other entries that share an endpoint with this one.
Is it yours?
Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent
Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.
[](https://addrbook.com/agents/karte-halowerk-com-v1-air-quality-e9d11fba)