crypto-api-fixer

Auto-repair middleware for crypto trading bots.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Fix Stale Data: Detects and fixes stale/outdated API responses from crypto exchanges. Fetches fresh data from backup sources. Use when price data is older than 5 seconds. Cost: $0.003/request.
  • Fix Rate Limit: Handles 429 and 503 rate limit errors. Applies smart backoff and proxy rotation. Use when exchange returns Too Many Requests. Cost: $0.003/request.
  • Fix Endpoint Down: Auto-failover when exchange API is down (502/503/504). Routes to backup mirrors for Binance, Coinbase, Kraken, Bybit, OKX. Cost: $0.003/request.

What data it sees

Do you need an account

No: the server works without sign-in

Auto-repair middleware for crypto trading bots. Automatically detects and fixes 10 types of exchange API errors (rate limits, stale data, broken JSON, auth failures, price mismatches, endpoint downtime, financial risks, WebSocket failures, and more) in under 2ms — before your bot loses money. Free tier: 100 requests/bot. Paid via x402 USDC on Base.

How to connect

How to connect crypto-api-fixer to Claude

The server address to paste into Claude settings:

https://crypto-api-fixer--aloryanirakan-cqmg.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect crypto-api-fixer to ChatGPT

The server address to paste into ChatGPT settings:

https://crypto-api-fixer--aloryanirakan-cqmg.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect crypto-api-fixer to Cursor

The server address to paste into Cursor settings:

https://crypto-api-fixer--aloryanirakan-cqmg.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (11)

Raw names from tools/list. Only developers need these.

fix_stale_dataDetects and fixes stale/outdated API responses from crypto exchanges. Fetches fresh data from backup sources. Use when price data is older than 5 seconds. Cost: $0.003/request.
fix_rate_limitHandles 429 and 503 rate limit errors. Applies smart backoff and proxy rotation. Use when exchange returns Too Many Requests. Cost: $0.003/request.
fix_endpoint_downAuto-failover when exchange API is down (502/503/504). Routes to backup mirrors for Binance, Coinbase, Kraken, Bybit, OKX. Cost: $0.003/request.
fix_unexpected_errorFixes unexpected 500 errors, null values, and wrong data types in API responses. Cost: $0.003/request.
fix_price_mismatchCross-exchange price validation. Detects outliers over 3% deviation and computes median price. Use when prices differ significantly between exchanges. Cost: $0.007/request.
fix_json_brokenRepairs malformed JSON, schema changes, and missing required fields. Auto-remaps Binance, Coinbase, Kraken schemas. Cost: $0.007/request.
fix_auth_errorFixes 401/403 authentication errors. Rotates API keys, recalculates HMAC signatures, syncs timestamps. Cost: $0.007/request.
fix_financial_riskReal-time circuit breaker for price spikes over 3%, low liquidity, or API latency over 500ms. Pauses trading to prevent losses. Cost: $0.007/request.
fix_websocket_deadDetects silent WebSocket disconnections and reconnects automatically. Use when no data received for over 30 seconds. Cost: $0.003/request.
fix_key_permissionValidates API key permissions. Alerts on dangerous withdrawal permissions and switches to safe trading mode. Cost: $0.003/request.
auto_fixAuto-detects and fixes any crypto exchange API error. Use this when you are unsure of the error type. Handles all 10 error categories automatically.