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OpenSea for AI agents

OpenSea is a large NFT marketplace where users browse, buy, sell, and create listings for NFTs and crypto collectibles. Collectors and creators use it to trade digital assets. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect OpenSeaSee the 24 actions ↓
E-commerceAPI keyMCP + RESTopensea.io
AUDIT LOG · OPENSEAPOLICY: acme-support
09:41:07 · claude · u_8f2read
opensea.get_nft
Get nft✓ allowed · 212ms
09:41:08 · claude · u_8f2read
opensea.get_order
Get order✓ allowed · 164ms
09:41:09 · claude · u_8f2write
opensea.create_listing
Create listing✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
opensea.cancel_order
Cancel order✕ blocked · policy: deny
EVERY OPENSEA CALL, ON THE RECORD
01 · USE CASES

What agents do in OpenSea.

01

Check a collection's floor price

Look up the best listing and collection stats for an NFT collection read-only.

02

Create a listing for an NFT

List an owned NFT for sale at a set price on the marketplace.

03

Cancel an order with approval

Cancel an existing listing or offer only after the owner confirms the cancellation.

02 · ACTIONS

24 OpenSea actions, graded by risk.

Every OpenSea action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

16

Look things up. Allowed by default.

  • opensea.get_nft
    Get nft
  • opensea.get_order
    Get order
  • opensea.get_events
    Get events
  • opensea.get_traits
    Get traits
  • opensea.get_account
    Get account
  • opensea.get_contract
    Get contract
  • opensea.get_listings
    Get listings
  • opensea.get_collection
    Get collection
  • opensea.get_collections
    Get collections
  • opensea.get_payment_token
    Get payment token
  • opensea.get_collection_stats
    Get collection stats
  • opensea.get_best_offer_by_nft
    Get best offer by nft
  • opensea.get_best_listing_by_nft
    Get best listing by nft
  • opensea.get_all_offers_by_collection
    Get all offers by collection
  • opensea.get_all_listings_by_collection
    Get all listings by collection
  • opensea.get_best_listings_by_collection
    Get best listings by collection

write

7

Create and change things. Allow, or ask the user first.

  • opensea.create_listing
    Create listing
  • opensea.create_item_offer
    Create item offer
  • opensea.create_criteria_offer
    Create criteria offer
  • opensea.fulfill_offer
    Fulfill offer
  • opensea.fulfill_listing
    Fulfill listing
  • opensea.build_criteria_offer
    Build criteria offer
  • opensea.refresh_nft_metadata
    Refresh nft metadata

destructive

1

Delete, cancel or archive. Ask first, or deny outright.

  • opensea.cancel_order
    Cancel order
03 · HOW IT WORKS

OpenSea in three steps.

  1. 01Your users connect OpenSeaThey add their OpenSea api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create listing” can wait for the user, and “cancel order” can be denied outright.
  3. 03Any agent can actYour agent calls OpenSea through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('opensea', {
  read: 'allow',
  write: 'ask',        // create_listing
  destructive: 'deny',  // cancel_order
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How OpenSea connects.

Users add their OpenSea api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same OpenSea connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use OpenSea from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More e-commerce apps.

Shopify407 actionsAlpaca100 actionsClover209 actionsCloudcart150 actionsBaselinker106 actionsShippo95 actionsShipengine66 actionsProabono64 actions
ALL E-COMMERCE APPS →
07 · FAQ

OpenSea and Arc0, answered.

Q01

Can I use OpenSea with Claude, ChatGPT or Cursor?

Yes. Connect OpenSea to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the OpenSea actions you allow.

Q02

How do users connect OpenSea?

Users add their OpenSea api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which OpenSea actions can my agent take?

24 in total: 16 read, 7 write and 1 destructive, such as “create listing”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in OpenSea?

Yes. Actions like “cancel order” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call OpenSea too?

Yes. The same OpenSea connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug OpenSea into your agent.

Your users connect OpenSea once, under your brand. Your agent gets 24 actions behind your policies, with every call on the record.

Connect OpenSeaBrowse all apps →

Free to build · MCP + REST · Audit log on every plan