A2A Agent Card · OpenSea

OpenSea

Discover, buy, sell, and mint NFTs and swap tokens across dozens of blockchains. The OpenSea agent exposes real-time NFT, token, collection, wallet, and marketplace data and actions via the OpenSea MCP server.

Open the live agent card → Agent endpoint OpenSea provider profile
Near-conformant. Correctly shaped against the A2A 1.0.0 AgentCard object, but omits optional fields an agent may expect.
Provider: OpenSea Conformance: Near-Conformant Protocol: 0.2.5 Transport: streamable-http Version: 1.0.0 Host: opensea.io Skills: 7
Discovery

An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.

https://opensea.io/.well-known/agent-card.json
Interfaces
https://mcp.opensea.io/mcp · transport streamable-http · protocol non-standard supportedInterfaces
Skills (7)

Search OpenSea search

Search across NFTs, tokens, collections, and agent tools with a single query.

searchdiscoverynfttoken

NFT and item data nft-data

Fetch NFTs, item details, ownership, rarity, live listings, and offers.

nftitemslistingsoffers

Token and market data token-data

Fetch fungible tokens, balances, prices, and trending or top tokens.

tokenpricesmarket

Collection data collection-data

Fetch collections, floor prices, stats, and trending or top collections.

collectionstatsfloor-price

Token swap quotes swap-quote

Get DEX-aggregated ERC-20 token swap quotes across supported chains.

swapdefiquote

Account and portfolio account-portfolio

Look up accounts, profiles, NFT and token balances, favorites, and activity.

accountportfolioprofile

Marketplace actions marketplace-actions

Create and cancel orders, manage drops, collections, profile, wallets, and watchlists (OAuth-scoped).

ordersdropsmanageoauth
Documentation
https://docs.opensea.io/reference/mcp
Evidence. Fetched 2026-07-28 from https://opensea.io/.well-known/agent-card.json, HTTP 200. The body was saved verbatim and is the sole source for everything on this page — no field is inferred. View the captured card. Providers change what they serve; if this card has moved or changed shape, the provider profile carries the current state as of the last build.