Buy, sell and bid on vote-escrow NFTs and .base.eth names. Non-custodial, settles on Seaport.
Scored across 13 tools
Each tool targets a distinct resource+action: listings vs orders vs owned positions vs trades are separable, and the prepare_* tools divide cleanly into sell/buy/offer/cancel. The main soft spot is get_listing_details (detail for one order) versus get_listings and get_orders, which could be momentarily confused, but descriptions disambiguate them well.
Names are consistently snake_case and verb_noun, but the verb choice is mixed: collection reads use both get_ (get_listings, get_orders) and list_ (list_micro_markets, list_subscriptions) for the same kind of operation. Readable overall, but the get_/list_ split is an avoidable inconsistency.
13 tools is well within the sweet spot and each earns its place: a coherent read surface (listings, orders, positions, trades, markets, subscriptions), a prepare_* family for write flows, and subscribe/unsubscribe/list for notifications. Nothing feels padded or missing at the count level.
The surface covers the full marketplace lifecycle: discover markets, browse listings, inspect owned positions, prepare sell/buy/offer/cancel transactions, and manage notification subscriptions. Minor gaps remain, such as confirm-after-tx operations being mentioned only as HTTP endpoints and no explicit saved-search creation tool, but agents can work around these.
Full detail for one order including a FRESH live-contents snapshot (principal, claimable rewards, voting/earning power, as_of_block).
Inputs: orderHash (required).
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.
Inputs: marketId (required), kind, limit, nameContains, +1 more.
List orders created by an address (its listings, auctions, offers). Status is reconciled by the background worker — treat as advisory until checked at fill.
Inputs: offerer (required), status.
List the positions an address owns in a market, with listability (voted/attached positions can't transfer).
Inputs: owner (required), marketId (required).
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).
Inputs: marketId (required), limit.
List the markets this marketplace facilitates (asset, chain, currencies, fee).
Inputs: no named parameters.
List a wallet's notification subscriptions (webhook URLs redacted to origin).
Inputs: wallet (required).
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.
Inputs: orderHash (required).
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. Never signs or holds keys.
Inputs: kind (required), seller (required), marketId (required), currencySymbol (required), +6 more.
Prepare a BID/offer on a position: returns the Seaport order to sign (EIP-712), the currency approval needed, and how to submit it. The agent reads its Seaport counter, signs, and POSTs the signed order — settlement stays on Seaport. The buyer wallet must hold the offer's outlay (price + its fee share) when it submits; an unfunded offer is rejected (insufficient_balance), and one that later loses its funds or allowance is hidden from the book until they return.
Inputs: buyer (required), marketId (required), offerAmount (required), currencySymbol (required), +3 more.
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.
Inputs: orderHash (required).
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))).
Inputs: events (required), wallet (required), chainId (required), channel (required), +4 more.
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.
Inputs: wallet (required), chainId (required), timestamp (required), subscriptionId (required), +1 more.
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