> **AI context:** For a structured overview of Express B2B, read [/llms.txt](/llms.txt). For complete product documentation, read [/llms-full.txt](/llms-full.txt). Developer API — Express B2B What is manual order intake costing your team annually? [ Find out free ](/b2b-ordering-cost-calculator) [![Express B2B](/brand/lockup-light.svg)](/) [Features](/features) [Use cases](/use-cases) [Pricing](/pricing) [Who it's for](/industries) [Case studies](/case-studies) [Developers](/developers) [Sign in](/admin) [ Book a demo ](/#demo) Discover [Features](/features) [Who it's for](/industries) [Use cases](/use-cases) [Pricing](/pricing) Evaluate [ Cost calculator Free ](/b2b-ordering-cost-calculator) [ Free resources Free ](/resources) [Case studies](/case-studies) [Developers](/developers) Get started [ Live group demo Every Tuesday ](/live-demo) [Contact us](/#contact) [Sign in](/admin) Developer Preview Connect your systems to your order data. =========================================== Express B2B provides a REST API with endpoints for orders, billing accounts, catalog, and webhooks, authenticated via API key. A public MCP server at /mcp enables AI assistants to query live pricing, features, and competitor comparisons directly. Outbound webhooks fire on order creation, status changes, and approval events. The Express B2B API gives you real-time access to orders, billing accounts, catalog, and webhooks. REST endpoints, API key auth, no friction. Available on every plan. Use it to push orders into your ERP, sync inventory, or trigger downstream workflows the moment something happens. [ Request API access ](/#demo) [ Browse endpoints ](#endpoints) GET /api/orders 200 OK ``` { "data": [ { "id": "01936b4a-2c5e-7a1f-9d83-e7f2c4a18b3d", "status": "pending_approval", "billing_account": { "id": "01936a11-8d3f-7c0e-b541-94e1c73b2f8a", "name": "Midwest Restaurant Group", "pricing_tier": "volume_b" }, "site": { "id": "01936a12-ff40-7c9e-b112-73e4d9b8a214", "name": "Chicago — Loop" }, "items": [ { "sku": "NAP-LIN-WHT-200", "qty": 4, "unit_price": "38.50", "line_total": "154.00" } ], "subtotal": "154.00", "created_at": "2026-03-15T14:32:07Z" } ], "meta": { "total": 47, "per_page": 25 } }▍ ``` REST JSON over HTTPS API keys Simple Bearer auth All plans No tier gating Webhooks Real-time events MCP AI-native access OpenAPI Standard spec What's exposed Three surfaces. Everything you need. ------------------------------------ The API covers the data your ERP, WMS, and internal tools actually care about — not a surface-level subset. ### Orders Pull orders by status, date range, billing account, or site. Each record includes full line items, negotiated pricing applied at order time, approval state, and timestamps. List & filter orders Single order detail Line items + pricing Approval history ### Catalog Push products, update inventory levels, and manage pricing tiers without touching the admin panel. Keep Express B2B in sync with your ERP or warehouse system automatically. Create & update products Set per-account pricing Inventory level sync Bulk upsert support ### Webhooks Register endpoints to receive real-time events when orders are placed, approved, rejected, or fulfilled. No polling. Signed payloads so you know the request is genuine. Order lifecycle events Signed with HMAC-SHA256 Retry with backoff Manage via API or admin Endpoints Clean, predictable, REST. ------------------------- Every endpoint returns JSON and follows standard HTTP conventions. No surprises. GET `/api/orders` List orders Returns paginated orders. Filter by status, billing\_account\_id, site\_id, or date range. `{ "data": [ { "id": "...", "status": "pending_approval", ... } ], "meta": { "total": 47 } }` GET `/api/orders/{id}` Retrieve an order Full order detail including all line items, applied pricing, site, billing account, and approval history. `{ "id": "01936b4a-...", "items": [ { "sku": "NAP-LIN-WHT-200", "qty": 4, "line_total": "154.00" } ], ... }` POST `/api/products` Create or update a product Upserts a product by SKU. Include pricing overrides for specific billing accounts in the same request. `{ "sku": "NAP-LIN-WHT-200", "name": "...", "base_price": "38.50", "pricing": [ { "tier": "volume_b", "price": "34.00" } ] }` POST `/api/webhooks` Register a webhook Subscribe a URL to one or more event types. Returns a signing secret for verifying incoming payloads. `{ "url": "https://yourapp.com/hooks/orders", "events": ["order.placed", "order.approved"] }` GET `/api/billing-accounts` List billing accounts All billing accounts in your workspace with their sites, pricing tiers, and approval configuration. `{ "data": [ { "id": "...", "name": "Midwest Restaurant Group", "sites_count": 7, "pricing_tier": "volume_b" } ] }` OpenAPI Standard The API follows the [OpenAPI specification](https://www.openapis.org). A machine-readable spec and Swagger UI are coming at public beta. Authentication One header. Every request. -------------------------- Generate an API key from your admin panel. Pass it as a Bearer token on every request. No OAuth flows, no token refresh — just a key you control. Request header Authorization: Bearer ak\_live\_4xR9mK2pL8nQ7vT3wF6jH1sA5yC Accept: application/json Keys are workspace-scoped — Each key has access to all resources in your workspace. Rotate without downtime — Generate a new key before revoking the old one — no gap in coverage. Separate staging keys — Create test keys tied to your staging environment. Rate limits Endpoint type Limit Read endpoints 120 / min Write endpoints 60 / min Webhook registration 10 / min Bulk product upsert 500 records / req Limits are per API key. Exceeded requests return `429 Too Many Requests` with a `Retry-After` header. Versioning Request header X-ExpressB2B-Version: 2026-01 Pass the version as a request header in `YYYY-MM` format. Endpoint URLs stay stable across versions. Omitting the header pins you to the oldest supported version. Each version is supported for 12 months after a newer one ships. Webhook events React to what happens, when it happens. --------------------------------------- Every event carries the full order context. No follow-up API call needed to know what changed — the payload has everything. `order.placed` A buyer submitted an order `order.approved` Order passed approval review `order.rejected` Order was rejected by an approver `order.fulfilled` Order marked as fulfilled `order.cancelled` Order cancelled by buyer or admin POST → your-endpoint order.placed ``` { "event": "order.placed", "id": "wh_01936b5c-3f2a-7e4d-8b29-c1d4e5f6a7b8", "created_at": "2026-03-15T14:32:08Z", "data": { "order_id": "01936b4a-2c5e-7a1f-9d83-e7f2c4a18b3d", "status": "pending_approval", "billing_account_id": "01936a11-8d3f-7c0e-b541-94e1c73b2f8a", "site_id": "01936a12-ff40-7c9e-b112-73e4d9b8a214", "total": "154.00", "items_count": 1 } } ``` Every payload is signed with `X-ExpressB2B-Signature` (HMAC-SHA256). Verify it before processing. MCP server Connect AI assistants directly. ------------------------------- Express B2B exposes a public [Model Context Protocol](https://modelcontextprotocol.io) server at `expressb2b.com/mcp`. Add it to any MCP-compatible AI client and your assistant can query live, accurate data about the platform. No API key required. No authentication. The server exposes public marketing data — pricing, features, comparisons. calculate-pricing-tool Pass an annual GMV figure. Get a full cost breakdown — GMV fee tiers, subscription, all-in monthly total per plan. get-features-tool Full feature list across all plans, or filtered to a specific plan. Accurate, live data — not a cached summary. get-comparison-tool Pass a competitor slug — phone-and-email, shopify-b2b, netsuite, and more. Returns an honest strengths/limitations breakdown. Connect from Claude Desktop claude\_desktop\_config.json ``` { "mcpServers": { "express-b2b": { "type": "http", "url": "https://expressb2b.com/mcp" } } } ``` Connect from any MCP client mcp.json / cursor config ``` { "servers": [{ "name": "Express B2B", "type": "http", "url": "https://expressb2b.com/mcp" }] } ``` No API key required. The server exposes public data only — pricing, features, comparisons. API access is included on every plan. ------------------------------------- No feature tier to unlock. Generate a key from your admin panel and start pulling orders the same day you go live. [ Book a demo ](/#demo) [ Explore all features ](/features) Express B2B · Book a Demo Step 1 of 3 About you Let's start with you -------------------- We'll use this to personalise the demo and come prepared. Full name \* Work email \* Company \* Your role Select… Owner / Founder VP or Director Operations Manager Sales Manager Technical / IT Other Continue Please fill in your name, email, and company to continue. About your business ------------------- Helps us understand your setup before the call. Industry Select your industry… Educational Supply & Publishing Industrial Components & Manufacturing Food & Beverage Distribution Safety, Facilities & Janitorial Supply Medical & Dental Consumables Office & Print Supply Chemicals & Cleaning Supply Subscription Fulfillment (schools / institutions) Promotional & Branded Products Agriculture & Farm Supply Other distribution / wholesale Annual B2B order volume Select a range… Under $500K $500K – $2M $2M – $10M $10M – $50M $50M+ How do customers currently place orders? Select the main method… Phone or email Spreadsheets or shared forms Existing e-commerce site ERP customer portal Mix of methods Back Continue Your ordering setup ------------------- A few quick questions about your current workflow. How many customer accounts do you manage? Select a range… 1 – 10 11 – 50 51 – 200 200+ Do your buyers ship to multiple locations? Yes No — single location What's your biggest challenge with the current ordering process? Back Pick a time → Thanks, there! -------------- We've got everything we need. Pick a time below — we'll come prepared with your answers so you get a demo built around your business. Scheduling widget Replace with your Calendly or Cal.com embed Prefer to see it first? [Join a free group walkthrough every Tuesday →](/live-demo) Express B2B · Contact Us Get in touch ------------ We read every message and reply within one business day. First name \* Last name \* Work email \* Company Company website Phone Your role Select… Owner / Founder VP or Director Operations Manager Sales Manager Technical / IT Other What's this about? Select… Pricing question Request a demo Partnership or integration Technical question General question Other Message \* How did you find us? Select… Google search LinkedIn Word of mouth / referral Industry event or conference Online ad Other Please fill in your first name, last name, email, and message. Send message Message sent! ------------- Thanks for reaching out. We'll get back to you at within one business day. Close Express B2B · Fit Check Question 1 of 5 Find out if Express B2B fits your operation ------------------------------------------- 5 questions about your current ordering process. We'll diagnose exactly what's costing you — and whether this platform solves it. - Takes under 2 minutes - Personalised diagnosis at the end - No email required to see results Let's find out Question 1 of 5 How do most of your customers send you orders today? ---------------------------------------------------- Don't overthink it — pick the one that happens most. By phone or email My team transcribes them manually Spreadsheets or shared forms Structured, but still manual to process Through an existing site or platform It works, but it wasn't built for B2B A mix — every customer does it differently Different methods, constant switching Continue Question 2 of 5 How much of your team's week goes into manually processing orders? ------------------------------------------------------------------ Think about data entry, confirmations, corrections, and follow-up emails. Less than an hour a week We're pretty automated already A few hours — it adds up Noticeable, but we manage Half a day or more each week It's a real drain on the team It's basically someone's full-time job A whole role dedicated to order intake Back Continue Question 3 of 5 How confident are you that every order goes out at the right negotiated price? ------------------------------------------------------------------------------ Each customer may have different rates. How is that tracked today? Very confident — we have a reliable system Pricing is centralised and accurate Mostly — but we manually double-check Some process, but still human verification We catch errors — sometimes after they ship Wrong prices reach customers occasionally Not very — it's a real risk for us Pricing errors happen and we don't always catch them Back Continue Question 4 of 5 When a customer ships to multiple locations, how does that work today? ---------------------------------------------------------------------- Select all that apply to your customers. Each location orders separately No central oversight — each site is its own account One person manages all locations Lots of back-and-forth, easy to get something wrong It's messy — errors happen regularly Wrong addresses, wrong items, missed locations Our customers only have one location Not a factor in our business right now All of the above apply Multiple of these are true for different customers Back Continue Question 5 of 5 What would you fix about your ordering process if you could? ------------------------------------------------------------ Select all that apply — most operations have more than one. Stop spending time on manual order entry Eliminate the data entry work entirely Make sure pricing is accurate every time Right rates, automatically, no double-checking Give customers a self-service way to order They shouldn't need to call or email us every time Get real visibility into what's been ordered Status, history, and confirmations without chasing All of the above Every one of these is a problem for us Back See my results Analysing your responses… ------------------------- Identifying what's costing you the most Here's what's costing you most: Chat with AI about your results Express B2B AI Coming soon AI chat is in development — we'll notify you when it launches. Send me my results [ Keep exploring instead ](/features) Where should we send them? -------------------------- We'll email your personalised assessment. A team member will be in touch within one business day. Full name Work email \* Company (optional) Phone (optional) Please enter your work email to continue. Back Send my results Check your inbox. ----------------- Your fit assessment is on its way. A team member will be in touch within one business day. 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