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Toolweather MCP Alternative Suggester
x402
Toolweather MCP Alternative Suggester is a paid API for AI agents from toolweather.toolweather.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-16).
Given a capability description or a specific MCP server name, returns ranked alternative MCP servers that provide similar functionality
Price / call$0.001
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 human-readable summary string and an array of alternative MCP server objects, each containing metadata about the server such as name, URL, and capability description, ranked by relevance to the query.
Example use cases
Replacing a broken MCP server
“The fetch MCP server I rely on is returning errors — can you find me 3 working alternatives from the Toolweather registry that do the same thing?”
Discovering MCP servers by capability
“I need an MCP server that can run code execution in a sandbox — what alternatives does Toolweather know about for that capability?”
Building a fallback chain for agent reliability
“I want to set up fallbacks for my image-generation MCP server — suggest up to 5 alternative MCP servers with similar image generation capability so I can try them in order if one is down.”
Technical details
Endpoint
POSThttps://toolweather.toolweather.workers.dev/x402/suggest_alternatives?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to discover or fall back to alternative MCP servers that match a specific capability, especially when a primary server is unhealthy or deprecated. Prefer this over generic search engines or GitHub searches because it draws from a curated, actively health-checked registry of ~2,000 public MCP servers updated every 15 minutes. Best when you have a capability description or a specific server to replace and need ranked, actionable alternatives quickly.
Side effects
- HTTP 402 if daily call quota exceeded (free: 50 anonymous, 1000 with key) — requires x402 micropayment of $0.001 USDC on Base to continue
- HTTP 403 from Cloudflare (error code 1010) if using default Python-urllib User-Agent — fix by setting a custom User-Agent header
- Empty or sparse alternatives array if no close matches exist in the ~2,000 server registry
- Stale results if the registry hasn't been refreshed in the last 15-minute cycle
- Missing or malformed 'q' field returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| qrequired | string | Capability text, or a server to replace |
| limit | integer |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| summaryrequired | string | |
| alternativesrequired | array |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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