# API Key Load Balancer MCP

> API Key Load Balancer MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-16).

Distributes and load-balances API key usage across multiple keys to prevent rate limiting and maximize throughput

## Facts

- Endpoint: POST https://api.m2mcent.com/api-key-load-balancer-mcp/api/process?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-key-load-balancer-mcp-cc3dbcf2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f0UIjHD4Y6sQ5HjYyTLku

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 api-key-load-balancer-mcp-cc3dbcf2 -d '<json body>'
```

Example prompt: Route this API request through the load balancer to distribute usage across my API key pool and avoid hitting rate limits — here's the data payload to process.

## When to prefer this

Choose this endpoint when you are managing multiple API keys and need to distribute load to avoid rate limiting, or when you want a managed proxy layer that automatically selects the best available key for each request without implementing rotation logic yourself.

## Known failure modes

- All API keys exhausted or rate-limited — returns error indicating no available keys
- Malformed data string input — returns validation error
- Upstream API provider downtime — returns connectivity or timeout error
- Payment failure via x402 — request rejected before processing

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns a processed response after the incoming request has been routed through the optimal available API key, effectively hiding rate limiting complexity from the caller.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-key-load-balancer-mcp-cc3dbcf2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)