{
  "markdown": "# NFT Metadata API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://nft-metadata.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nNFT metadata lookup -- name, image, attributes, collection info from contract + token ID. Ethereum and Base. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"nft-metadata\": {\n      \"url\": \"https://nft-metadata.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl -X POST \"https://nft-metadata.api.klymax402.com/api/metadata\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"contract\":\"...\",\"tokenId\":\"...\"}'\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `crypto_get_nft_metadata` | POST | `/api/metadata` | $0.008 | Fetch NFT metadata from contract and token ID |\n\n### `crypto_get_nft_metadata`\n\nUse this when you need to fetch metadata for a specific NFT by contract address and token ID. Returns full NFT details in JSON.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `contract` | string | yes | NFT contract address (e.g. 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D) |\n| `tokenId` | string | yes | Token ID within the contract |\n| `chain` | string | no | Blockchain: 'ethereum' or 'base' (default: ethereum) |\n\n**Returns**\n\n- `name` -- NFT token name\n- `description` -- token description text\n- `imageUrl` -- URL to the NFT image/media\n- `attributes` -- array of trait objects with trait_type and value\n- `collection` -- collection name and contract info\n- `tokenStandard` -- ERC-721 or ERC-1155\n- `chain` -- which blockchain the NFT is on\n\nExample response:\n\n```json\n{\"name\":\"Bored Ape #1234\",\"description\":\"A unique digital collectible...\",\"imageUrl\":\"ipfs://Qm...\",\"attributes\":[{\"trait_type\":\"Background\",\"value\":\"Blue\"},{\"trait_type\":\"Fur\",\"value\":\"Gold\"}],\"collection\":\"BoredApeYachtClub\",\"tokenStandard\":\"ERC-721\",\"chain\":\"ethereum\"}\n```\n\n**When to use**: NFT verification, display, and trait analysis. Essential for NFT marketplace agents and collection tools.\n\n**Not for**: wallet balances (use `wallet_get_portfolio`), ENS resolution (use `crypto_resolve_ens`), token safety (use `token_check_safety`).\n\n## Example agent prompts\n\n- \"Fetch metadata for a specific NFT by contract address and token ID\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "sha": "2dfaab13552bfc1bfa4c3794240bf0ea6761a054cbc4bf7ac306fc0590f10704",
  "repo_slug": "br0ski777/nft-metadata-x402",
  "fonte": "repo",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_nft_metadata_3ce30b55/readme"
}