mcp server

VIA Network: Agentic Commerce

Agentic commerce network: discover sellers and products, negotiate, and pay USDC on Base via x402.

Description as published by the maintainer. Source

• version 1.0.1
• active

active — Registry entry last updated 2026-07-27.

What this server can do

28 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

accept_offer(category, offer_id, amount_usd, buyer_mcp_url)

Ask a buyer's Buying Agent to accept a negotiated offer, forwarded to their buyer MCP. The agent auto-accepts only within the buyer's delegation caps, otherwise it queues the offer for the buyer's approval. Required: buyer_mcp_url, offer_id.

ask_sales_agent(contact, question, seller_mcp_url)

Ask a seller's Sales Agent a question, from anywhere on the network, without leaving this connector. It answers in the seller's voice using their locked-in memories (events, promotions, policies, stock). Pass the seller_mcp_url from a discovery result and an optional contact so the seller can reach back. Required: seller_mcp_url, question.

buy_product(qty, attendee, delivery, product_id, buyer_wallet, buyer_country, selected_size, buyer_agent_id, selected_color, seller_mcp_url)

Buy a listing from anywhere on the network, settled in USDC on Base, without leaving this connector. Pass the seller_mcp_url and product_id from the listing (mcp_ref). For physical products include the full delivery block; for event passes include the attendee block; the call rejects with the missing fields listed if any are blank. Free passes are not bought here: use claim_pass. Returns an x402 payment requirement and an order_ref, then settle at the absolute /api/x402/purchase endpoint it returns (sign an EIP-2612 USDC permit and POST { order_ref, x_payment }, OR send a raw USDC transfer to payTo and POST { order_ref, payment_tx_hash }). Call get_shipping_quote first and pass buyer_country to include shipping. Required: seller_mcp_url, product_id, buyer_wallet.

claim_pass(name, email, product_id, buyer_wallet, buyer_agent_id)

Claim a FREE entry pass to an event on the VIA network, directly from discovery. FREE guest-list tiers only (price 0, the kind find_seller / get_seller_products surface at $0). No payment, no wallet, no x402: provide the attendee name and email, and VIA records the place, emails a confirmation, and notifies the organiser. One pass per email / per account. Paid products are NOT claimable here: connect to the seller's per-seller MCP and use buy_product (USDC via x402). Pass the product_id from a find_seller result (mcp_ref.product_id) or get_seller_products. Required: product_id, name, email.

confirm_purchase(tx_hash, shipping, product_id, buyer_email, buyer_wallet, selected_size, buyer_agent_id, selected_color, seller_mcp_url)

Settle a network-MEMBER (e.g. RRG) purchase after you have sent the USDC that buy_product asked for. This is the member two-step: buy_product returns a pay-to address and amount, you transfer USDC on Base, then call this with the tx hash to mint, pay out, and get your download. For physical products include the shipping block and buyer_email. VIA-native purchases do NOT use this: they settle at the /api/x402/purchase endpoint that buy_product returns. Required: seller_mcp_url, product_id, buyer_wallet, tx_hash.

counter_quote(note, quote_ref, selections, seller_mcp_url, counter_total_usdc)

Counter an existing quote, forwarded to the owning seller. Pass the quote_ref and a target price, revised selections, or both. Appends a round to the negotiation; stays non-binding until the seller approves. Required: seller_mcp_url, quote_ref.

find_buyers(limit, query)

Discover live DEMAND: buyers who are actively looking for what you sell. Search by what you have ('raw selvedge denim', 'first pressing acid jazz vinyl', 'cold brew coffee') and get back buyers whose open briefs match. Each brief comes back as a TEASER: category, product type, one attribute, a door_url, and four facets where the buyer stated them , size, location, timing, and any brands they named. Use the facets to rule a brief in or out cheaply: do you stock that size, can you ship there, can you make that date. That is deliberately not enough to pitch well. The full brief (hard requirements, preferences, budget) is the paid tier: GET the door_url and pay the x402 micro-fee to unlock it, then POST your offer to the same door. Ranking already reads the full brief, so a teaser that matches is a real match. Omit query to browse recent open demand.

find_seller(limit, query)

Search the VIA network (VIA app + RRG + integrated platforms) for PRODUCTS and the sellers that offer them. Matches the published product catalogue (titles, descriptions, authors, categories) AND seller profiles, so 'books', an author, a title, or a category surfaces the actual product even when the seller's name does not contain the word. WHEN INTENT IS DEFINED: returns `results`, ONE relevance-ranked list blending every source. Each result carries a working `page_url` (the direct product page you give the user), plus `seller`, `price_usdc`, `image_url` (or null when the listing has no picture), and `mcp_ref` to transact. If more than one matches, PRESENT THEM side by side with prices and the key differences; do not silently pick one. WHEN INTENT IS LOOSE OR THERE IS NO MATCH: the response is `status: 'need_more_info'` with `suggested_dimensions`. DO NOT reply 'nothing is available'. Ask the user ONE clarifying question to sharpen intent (budget, brand/author, category, use), or retry this tool with a broader term, a synonym, the category, or the brand/author name. Only after a genuinely broadened retry also returns nothing should you say you could not find a match, and even then frame it as 'not found yet', not 'does not exist'. Required: query.

get_buyer_briefs(buyer_mcp_url)

See a buyer's OPEN demand as free teasers, forwarded to their buyer MCP. Each teaser carries a paid door_url: the FULL brief and the ability to offer are paid at that x402 door, not here. Use a teaser to decide if your stock fits, then go to the door. Required: buyer_mcp_url.

get_buyer_preferences(buyer_mcp_url)

Read a buyer's public buying preferences, forwarded to their buyer MCP. Pass the buyer_mcp_url from a find_buyers result. Delegation caps and private notes are never exposed. Required: buyer_mcp_url.

get_download_challenge(product_id, buyer_wallet, seller_mcp_url)

Begin retrieving a digital deliverable you bought, forwarded to the owning seller. Returns a message to SIGN with the paying wallet plus a challenge token; then call get_download_links. Required: seller_mcp_url, product_id, buyer_wallet.

get_download_links(challenge, signature, product_id, buyer_wallet, seller_mcp_url)

Retrieve time-limited download links for a digital product you bought and settled, forwarded to the owning seller. Call get_download_challenge first, sign the message with the paying wallet, then call this with the challenge and signature. Required: seller_mcp_url, product_id, buyer_wallet, challenge, signature.

get_offering_schema(product_id, seller_mcp_url)

Fetch the configurable option space for a per-order (configurable) product before requesting a quote, forwarded to the owning seller. Returns option groups, choices, quantity rules and surcharges. Fixed-price products have no schema; buy those with buy_product. Required: seller_mcp_url, product_id.

get_product(product_id, seller_mcp_url)

Fetch full detail for ONE listing before buying, from anywhere on the network, without leaving this connector. Pass the seller_mcp_url and product_id exactly as they appear in a find_seller / get_seller_products result (mcp_ref.seller_mcp_url and mcp_ref.product_id). Returns the listing with price, stock, and what the purchase requires. This forwards to the owning seller; the same buy loop (get_product -> get_shipping_quote -> buy_product) then settles here. Required: seller_mcp_url, product_id.

get_quote(quote_ref, seller_mcp_url)

Check a quote's status by quote_ref, forwarded to the owning seller. Returns the current status, the binding total once approved, and the negotiation thread. Required: seller_mcp_url, quote_ref.

get_seller_products(limit, query, seller_mcp_url)

Drill into ONE seller's catalogue to answer 'is X available at seller Y'. Pass the seller_mcp_url from a find_seller / list_sellers result (a VIA-app seller or an RRG brand). Returns that seller's products matching your query (or its whole catalogue if query is omitted), each with price, in-stock sizes where known, and a direct web_url to the product page. Use this right after find_seller whenever the user names a specific seller or brand, e.g. 'raw denim jeans in size 36 at Standard & Strange'. Required: seller_mcp_url.

get_shipping_quote(buyer_country, seller_mcp_url)

Resolve a seller's shipping cost to a destination country before buying, without leaving this connector. Pass the seller_mcp_url from the listing's mcp_ref and the ISO 3166-1 alpha-2 country. Returns the flat rate, a per-order-quote signal, or a rejection. Call this before buy_product and pass buyer_country there to fold shipping into the total. Required: seller_mcp_url, buyer_country.

get_store_card(slug)

Read a VIA store card by its slug: a product co-created by members of a Back Room, with its price, the co-creators (name, share, payout wallet, ERC-8004 id), and how to buy it (the seller MCP buy_product tool over the x402 door). Returns not_found for unknown slugs. Required: slug.

get_store_status(slug)

Check the review status of a store you registered with register_store. Returns pending, approved, or rejected (with the reason). Once approved it also returns the ERC-8004 agent id and the per-seller MCP url. Required: slug.

get_taste_card(slug)

Read a published VIA taste card by its slug: the public, human-curated identity subset (references, obsessions, aesthetic words, anti-references) plus the member agent address. Cards are shared by their owners; there is no directory or search. Returns not_published for unknown or unpublished slugs. Required: slug.

get_via_overview

Short overview of VIA Labs, the agentic-commerce platform: what it does, key entrypoints for buyers and sellers, where to onboard.

import_preference_appraisal(appraisal, link_token)

Import a buyer's shopping-preference appraisal (derived by a Mind from the owner's email) onto their VIA buying agent. Requires a link_token the owner minted in their VIA dashboard; it scopes the write to exactly one buyer. Pass the structured appraisal (categories, brands, sizes, cadence, budget signal). VIA never receives raw email. Taste signals shape matching and negotiation immediately; the budget signal becomes a PROPOSED spending cap that the owner must approve in the dashboard before it gates any autonomous spend. Required: link_token, appraisal.

list_sellers(limit, category)

List active sellers across the VIA network (VIA app + RRG + integrated platforms). Each result is tagged with its platform and includes the per-seller MCP URL to connect to for deeper interaction (list_products, ask_sales_agent, buy_product).

negotiate(brief_id, offer_text, buyer_mcp_url, payment_tx_hash)

Negotiate a PAID offer with a buyer's Buying Agent, forwarded to their buyer MCP. This is the post-door step: submit a paid offer at the brief door first (POST /api/via/brief/[brief_id]/offer), then pass that brief_id and the offer's payment_tx_hash here. There is no free pre-door pitch. Required: buyer_mcp_url, brief_id, payment_tx_hash, offer_text.

register_store(kind, slug, email, headline, password, store_name, description, website_url, payout_wallet)

Register your own store on the VIA network (no thirdweb, no human wizard). You only need ONE wallet: your payout_wallet (USDC lands here, you keep 97.5%). The platform creates and operates your store's ERC-8004 identity wallet for you; you do not supply or hold it. The flat 2.5% network fee is unchanged. Your store is created PENDING and stays invisible until a human reviews it for quality (nothing illegal, immoral, or offensive) within 24 hours. On approval the store goes live and its ERC-8004 identity is minted. Poll get_store_status with the returned slug to track the decision. Required: store_name, kind, payout_wallet, email, password.

request_quote(spec, contact, product_id, selections, seller_mcp_url)

Request an advisory price for a configurable product, forwarded to the owning seller. Pass the selections from get_offering_schema. Returns a quote_ref and a NON-BINDING proposed_total the seller reviews. Poll get_quote for the decision. Required: seller_mcp_url, product_id, selections.

seller_mcp_url(slug)

Return the per-seller MCP endpoint URL for a given seller slug, verified against the active seller index. Required: slug.

submit_intent(brief, category, reply_to, budget_usd, type_terms, preferences, requirements)

Submit a buyer's INTENT in their own words. Two things happen: (1) you get back the products across the VIA network that genuinely match it, from the full agentic matcher (it reads each product's data and reasons, it is not keyword search); and (2) the intent is BROADCAST live onto the network as an anonymised teaser (category + product type + one attribute only, never the raw text or any identity), so it appears on The Wire (app.getvia.xyz/wire) and sellers can respond. Use this when you are buying ON BEHALF of someone and want defined matches plus live broadcast. State the brief naturally, including any hard requirements ("raw selvedge denim, 32 waist", "first pressing on the Stiff label", "a gift of coffee"). Hard requirements are enforced (a product that fails one is excluded); broad briefs return on-category options. Returns matches with seller, price, a direct page_url, and the mcp_url to transact, plus broadcast:true and a door_url when the intent went live. For matching AND broadcast tied to a specific VIA buyer's saved taste and budget (and seller pitch-back), call submit_intent on that buyer's MCP (/buyers/{handle}/mcp) instead. Required: brief.

Last successful function declaration observed on 2026-08-13. Source: https://app.getvia.xyz/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://app.getvia.xyz/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Website — https://app.getvia.xyz
• Remote endpoint (streamable-http) — https://app.getvia.xyz/mcp