# Toolweather Batch MCP Server Health Check

> Toolweather Batch MCP Server Health Check is a paid API for AI agents from toolweather.toolweather.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Batch-checks the live health status of multiple MCP servers in a single call, returning health verdicts and working alternatives for each.

## Facts

- Endpoint: POST https://toolweather.toolweather.workers.dev/x402/batch_check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/toolweather-batch-mcp-server-health-check-b542db69
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DzmLtRl_Tv9x6EwVrC2jb

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability toolweather-batch-mcp-server-health-check-b542db69 -d '<json body>'
```

Example prompt: Check whether these three MCP servers are healthy and safe to call right now — batch them together: 'filesystem', 'brave-search', and 'github' from the official MCP registry.

## When to prefer this

Use this endpoint when you need to check the health of multiple MCP servers in a single round-trip rather than querying them one at a time; it is specifically optimized for batch operations against the ~2,000 servers in the official MCP registry, checked every 15 minutes, and surfaces working alternatives automatically.

## Known failure modes

- HTTP 402 when daily quota is exceeded (50 anonymous or 1,000 keyed calls/day) — requires x402 micropayment of $0.001 per check
- HTTP 403 from Cloudflare (error code 1010) when using default Python-urllib User-Agent — fix by sending any other User-Agent header
- Invalid or unrecognized server identifiers return unknown/not-found verdicts
- Empty servers array returns a validation error

## 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 summary string and a results array where each entry contains the health verdict (up/down/degraded) and working alternative servers for each queried MCP server, as checked within the last 15 minutes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "servers"
 ],
 "properties": {
  "servers": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "summary",
  "results"
 ],
 "properties": {
  "results": {
   "type": "array",
   "items": {
    "type": "object"
   }
  },
  "summary": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/toolweather-batch-mcp-server-health-check-b542db69/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from toolweather.toolweather.workers.dev](https://www.zero.xyz/host/toolweather.toolweather.workers.dev/llms.txt)