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Airdrop Checker API

Official registry Finance and payments

Check wallet eligibility for active crypto airdrops — LayerZero, EigenLayer, Scroll. x402.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse airdrop-checker-api 'https://airdrop-checker.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "airdrop-checker-api": {
            "type": "sse",
            "url": "https://airdrop-checker.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Airdrop Checker API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

Airdrop Checker API

Check wallet eligibility for active crypto airdrops -- token, value, deadline, claim URL via Etherscan. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "airdrop-checker": {
      "url": "https://airdrop-checker.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://airdrop-checker.api.klymax402.com/api/check?address=0x0000000000000000000000000000000000dEaD"
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
crypto_check_airdropsGET/api/check$0.012Check wallet eligibility for crypto airdrops
crypto_check_airdropsPOST/api/check$0.012Check wallet eligibility for crypto airdrops (POST variant)
crypto_check_airdrops

Use this when you need to check if a wallet address is eligible for crypto airdrops. Scans wallet interactions against known airdrop contracts and returns eligible claims.

Parameters

NameTypeRequiredDescription
addressstringyesEthereum wallet address (0x...)

Returns

  • eligible -- array of airdrops the wallet qualifies for
  • totalEligible -- number of eligible airdrops found
  • totalEstimatedValue -- combined estimated USD value of all eligible airdrops
  • walletAddress -- the address checked
  • checkedAt -- timestamp of the check

Example response:

{"eligible":[{"tokenName":"LayerZero","tokenSymbol":"ZRO","estimatedValueUsd":450,"deadline":"2026-06-30T00:00:00Z","claimUrl":"https://claim.layerzero.network","status":"claimable"}],"totalEligible":3,"totalEstimatedValue":1250,"walletAddress":"0x742d...","checkedAt":"2026-04-13T12:00:00Z"}

When to use: discovering unclaimed airdrops, monitoring multiple wallets for eligibility, or building airdrop farming dashboards.

crypto_check_airdrops

Use this when you need to check if a wallet address is eligible for crypto airdrops. Scans wallet interactions against known airdrop contracts and returns eligible claims. POST variant of crypto_check_airdrops -- same params passed as JSON body instead of query string.

Parameters

NameTypeRequiredDescription
addressstringyesEthereum wallet address (0x...)

Returns

  • eligible -- array of airdrops the wallet qualifies for
  • totalEligible -- number of eligible airdrops found
  • totalEstimatedValue -- combined estimated USD value of all eligible airdrops
  • walletAddress -- the address checked
  • checkedAt -- timestamp of the check

Example response:

{"eligible":[{"tokenName":"LayerZero","tokenSymbol":"ZRO","estimatedValueUsd":450,"deadline":"2026-06-30T00:00:00Z","claimUrl":"https://claim.layerzero.network","status":"claimable"}],"totalEligible":3,"totalEstimatedValue":1250,"walletAddress":"0x742d...","checkedAt":"2026-04-13T12:00:00Z"}

When to use: discovering unclaimed airdrops, monitoring multiple wallets for eligibility, or building airdrop farming dashboards.

Example agent prompts

  • "Check if a wallet address is eligible for crypto airdrops"
  • "Check if a wallet address is eligible for crypto airdrops"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

Frequently asked questions

What is Airdrop Checker API?

Check wallet eligibility for active crypto airdrops — LayerZero, EigenLayer, Scroll. x402.

How do I install Airdrop Checker API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse airdrop-checker-api 'https://airdrop-checker.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Airdrop Checker API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Airdrop Checker API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Airdrop Checker API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.