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Toolweather MCP Server Live Health Check
x402
Toolweather MCP Server Live Health Check is a paid API for AI agents from toolweather.toolweather.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-20).
Returns a real-time safety verdict (safe/caution/unsafe/unknown) for a named MCP server, checked against live health data refreshed every 15 minutes
Price / call$0.003
Success—
StatusUnknown
How this service works
Toolweather suite: is this MCP server healthy and safe to call right now? Live health verdicts for ~2,000 public MCP servers from the official registry, checked every 15 minutes, plus working alternatives. The same MCP endpoint also exposes Upstream tools (check_api_status, check_model_deprecation, list_recent_api_changes, list_providers, get_digest) for AI/dev API status and model deprecations; Upstream's own REST/x402 API remains at https://upstream.toolweather.workers.dev. Free tier: 1,000 calls/day per key or 50/day anonymous with no key; get a key instantly with POST /v1/keys (no email or signup). Change alerts: watch up to 3 servers per free key and receive signed HTTPS webhooks. Python urllib users: Cloudflare returns HTTP 403 'error code: 1010' for the default Python-urllib User-Agent; send any other User-Agent header. Pricing: free 1,000 calls/day per key (or 50/day anonymous, no key) and 3 watches; over quota, HTTP 402 x402 v2 exact pay-per-call (USDC on Base): $0.001/check, $0.003/live recheck, $0.01/batch of 25, $0.05 per extra watch per 30 days. No subscription. See /v1/pricing.
Output
Returns a JSON object with a 'verdict' enum (safe/caution/unsafe/unknown), a human-readable 'summary' of the server's current health, a 'checked_at' ISO timestamp indicating when the check was last run, and a 'recommended_action' string suggesting what to do (e.g. use an alternative server).
Example use cases
Pre-flight check before agent run
“I'm about to kick off an automated agent pipeline that uses the 'brave-search' MCP server — can you verify it's currently safe and healthy before I proceed?”
Debugging a failing MCP tool
“My agent keeps erroring out when calling the 'memory' MCP server. Can you check its live health status and tell me if there's a recommended alternative?”
Monitoring MCP servers in a dashboard
“I want to know the current health verdict for the 'github' MCP server from the official registry — is it showing safe, caution, or unsafe right now?”
Technical details
Endpoint
POSThttps://toolweather.toolweather.workers.dev/x402/live_check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to verify the operational health of a specific MCP server before invoking it, especially in automated pipelines where calling a broken or unsafe server would cause downstream failures. It is the only service that provides live, 15-minute-refreshed safety verdicts specifically for MCP registry servers, with suggested alternatives — making it superior to generic uptime monitors that lack MCP-specific context.
Side effects
- HTTP 402 when over the free quota (50/day anonymous, 1000/day with key) — pay-per-call via x402 USDC on Base
- HTTP 403 with Cloudflare error code 1010 when using the default Python-urllib User-Agent — fix by sending a custom User-Agent header
- Unknown verdict returned if the server has never been indexed or is outside the ~2,000 monitored servers
- Missing or invalid 'server' field returns a validation error
- Rate limit exceeded without a key after 50 anonymous calls in a day
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tool | string | |
| serverrequired | string | MCP server registry name or remote URL |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| summaryrequired | string | |
| verdictrequired | string | |
| checked_at | string | |
| recommended_action | string |
Tags
x402
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