com.market0x/marketplace

Description and use

Buy, sell and bid on vote-escrow NFTs and .base.eth names. Non-custodial, settles on Seaport.

Compatible agents

• Claude Desktop
• Claude Code
• Hermes
• Codex CLI

Capabilities

get_listing_details: Full detail for one order including a FRESH live-contents snapshot (principal, claimable rewards, voting/earning power, as_of_block).

get_listings: Active listings/auctions for a market. Each row carries the ask and the position's underlying contents priced at current market (published formula: /docs#data-sources), plus discountPct (the difference between them). Sorted by discount percentage, descending.

get_orders: List orders created by an address (its listings, auctions, offers). Status is reconciled by the background worker — treat as advisory until checked at fill.

get_owned_positions: List the positions an address owns in a market, with listability (voted/attached positions can't transfer).

get_recent_trades: Recently settled sales for a market. amount is the EXACT settled total (incl. fee) from the on-chain fill where the indexer recorded it, with settledAt the block time and exact: true; otherwise it falls back to the listed ask with exact: false (a decayed Dutch auction settles BELOW its listed amount, so treat inexact rows as an upper bound).

list_micro_markets: List the markets this marketplace facilitates (asset, chain, currencies, fee).

list_subscriptions: List a wallet's notification subscriptions (webhook URLs redacted to origin).

prepare_cancel: Prepare the on-chain Seaport cancel transaction for an active order. Only the order's offerer can execute it (Seaport enforces msg.sender == offerer), so the calldata is safe to return. After it confirms, POST { txHash } to the confirm endpoint to update the book.

prepare_finalize: Prepare the post-purchase FINALIZE transactions for a Basename you now own: reclaim management rights, set the resolver, and point the name at your address (optionally set it as your primary name). A sale transfers the NFT but NOT the ENS registry management — until reclaim runs, the PREVIOUS owner can still change the name's resolver and records. Run this straight after a fill. Returns ordered calldata; the agent's own wallet signs and submits, and every call is msg.sender-enforced on-chain so the package is only usable by the owner.

prepare_listing: Prepare a SELL listing or Dutch auction. Verifies the seller OWNS the position and it's transferable (not voted/attached), builds the Seaport order with the Interface fee injected by the server, and returns the one-time NFT approval + EIP-712 typed data to sign. Name markets (basenames) take name instead of tokenId. Never signs or holds keys.

prepare_offer: Prepare a BID/offer on a position: returns the Seaport order to sign (EIP-712), the currency approval needed, and how to submit it. Name markets (basenames) take name instead of tokenId — any REGISTERED name is biddable, listed or not. The agent reads its Seaport counter, signs, and POSTs the signed order — settlement stays on Seaport.

prepare_purchase: Prepare the non-custodial transaction package to BUY a listing (or accept an offer): ordered approvals + Seaport fulfillOrder calldata + a fresh contents snapshot. prepared.summary quotes the CURRENT price (Dutch auctions interpolate, asOf says when); the approval grants approveBaseUnits — slightly above the quote on a decaying order, never above maxTotalBaseUnits — and Seaport charges the exact interpolated amount at fill. On auctions, prepared.cleanup is an optional post-settlement tx that zeroes the residual allowance. The agent's own wallet signs and submits — this never signs or holds keys.

search_names: Search the Basenames REGISTRY — every registered name, listed or not — by substring, length, character class and trait, with each row's owner, expiry and (when for sale) its order hash. This is the discovery surface for prepare_offer, which can bid on any registered name whether or not it is listed; without it an agent has no way to learn a name exists. Name markets only.

subscribe_notifications: Subscribe a wallet to push notifications (order_filled / offer_received / saved_search) via an HMAC-signed webhook — the agent-native alternative to polling. Two-step: call WITHOUT signature to get the exact message to sign (EIP-191 personal_sign), then call again WITH the signature. chainId is signed over and the signature is verified on THAT chain, so pass the chain the wallet actually signs on (smart-wallet signatures do not validate cross-chain). Each signed message is SINGLE-USE: resending the same body returns 409 replayed_signature — retry with a fresh timestamp and a new signature. The response includes the webhook HMAC secret ONCE (verify x-market0x-signature = hex(HMAC-SHA256(rawBody, secret))).

unsubscribe_notifications: Delete a notification subscription. Two-step like subscribe_notifications: call without signature to get the message to sign. chainId is signed over and verified on that chain. Signed messages are single-use.

streamable-http: Transport declared by the upstream MCP registry.

Limitations and review notes

Discovered metadata only; install commands are stored for review but never executed by AtlasRepo.