dev.workers.sdnscreen.sdn-screen-x402/agent-preflight
Agent Preflight: OFAC, DNS, Email Auth, Domain, Email & URL
$0.01/call via x402: OFAC wallet screen, DNS, email auth, domain age, email verify, URL unshorten.
alive probed 2026-10-13 · HTTP 200
6tools
2.5ktokens in Claude Opus 5.5
2.5ktokens in Claude Code
1.2 %of a 200k context window
1.5ko200k_base estimate
2.9 sto initialize
2.2 sto list tools
- Endpoint
- https://sdn-screen-x402.sdnscreen.workers.dev/mcp (streamable-http)
- Host
- sdn-screen-x402.sdnscreen.workers.dev
- Protocol
- 2025-11-25
- Reports itself as
- sdn-screen-x402 1.3.0
- Capabilities
- tools
- Instructions
- 430 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-13. Counted again when the tool definitions change. Method.
- Website
- https://sdn-screen-x402.sdnscreen.workers.dev/llms.txt
- Registry
- active, updated 2026-10-12 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| dns_lookup | 311 | 21 % |
| email_auth_check | 301 | 20 % |
| url_unshorten | 227 | 15 % |
| ofac_wallet_screen | 226 | 15 % |
| whois_domain_age | 220 | 15 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-13 11:11 | alive | 337 ms | 6 | 2.5k | 1.5k |
| 2026-10-12 11:36 | alive | 2.9 s | 3 | 1.4k | 838 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.workers.sdnscreen.sdn-screen-x402/agent-preflight)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.