calcbright.com
Remote MCP server host. 1 server URL from the Official MCP Registry. Each is checked with a login-free MCP handshake (initialize, then tools/list; unpaid tools/call only on tools that state a price, to read the payment request; nothing is paid, no credentials are sent): automatic unauthenticated MCP handshake (initialize + tools/list), aiming for about once a day per listed server while we are still working through the registry; priority tier (host looked up via BotsRated preflight/check/report, or also a covered x402 seller, in the last 7 days) about every 6 hours; servers with no MCP answer for 7 days about every 4 days. States are factual: ok (initialize and tools/list answered), auth_required (HTTP 401/403: the server wants a login), handshake_failed (HTTP answer without a valid MCP result), unreachable (no HTTP answer), blocked (not contacted: the URL, a redirect or its DNS points to a private, local or otherwise unsafe address, or to another host, which our safety rules don't allow). Server names and descriptions are copied from the registry (untrusted text). Friendlier view: /s/calcbright.com.
| URL | Transport | Registry Name | Last State | HTTP | Protocol | Tools | Recent Checks OK | Median ms | TLS | Last Checked |
|---|---|---|---|---|---|---|---|---|---|---|
https://calcbright.com/mcp | streamable-http | com.calcbright/calcbright | ok | 200 | 2025-06-18 | 167 | – | 147 | ok | 3 h ago |
Paid Tools
| Tool | Stated Price | Payment Request Asks | Network | Pays To | Stated Vs Asked |
|---|---|---|---|---|---|
| electricity_cost_calculator | – | – | Not checked | ||
| inflation_calculator | – | – | Not checked | ||
| markup_calculator | – | – | Not checked | ||
| profit_margin_calculator | – | – | Not checked | ||
| unit_price_calculator | $0.80 | – | No payment request returned |
From our unpaid check: the tool list, plus at most 2 unpaid calls to tools that state a price, only to read the payment request. We never pay and never call tools that don't state a price. Stated prices are the server's own text or metadata. Full details: free quick check (JSON).
MCP Check Receipts (Newest First, Up To 10 Per Server)
| Receipt | UTC Time | Path | State | HTTP | ms | Tools | Tools sha256 | Signed |
|---|---|---|---|---|---|---|---|---|
| 315519b5127029d1bda6 | 2026-10-24T08:15:51Z | /mcp | ok | 200 | 87 | 167 | 88c614335fa1 | per-receipt |
| 54ef1d5674116d3b4467 | 2026-10-24T01:33:37Z | /mcp | ok | 200 | 147 | 167 | 88c614335fa1 | per-receipt |
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