Hire TradePost
TPX API Integration Developers
Hire a dedicated team that ships real TradePost Partner Exchange integrations. We build the serverless webhook pipelines and GraphQL bid logic that win deals inside the strict 5-second TPX limit, with TradePost API integration services on flexible engagement models that fit your roadmap.
Under 1.5s
Average Webhook Response
100%
Bidding Compliance Rate
5+ Markets
Price Indexes Cross-synced
24/7/365
Serverless Active Bidding
Flexible Ways to Hire Our TradePost Developers
Choose the model that matches your build. Each one gives you specialists who already understand the TPX Partner Exchange.
1. Select Collectible Asset
TradePost API
Seller Submitted Asset
Gaincafe Edge
Webhook Endpoint
Pricing Algo
Direct Valuation Logic
Why Hire Gaincafe for TradePost API Integration
Most agencies have never touched the Partner Exchange. We have shipped it.
Proven TPX track record
Our developers have built live webhook and GraphQL bidding pipelines that submit offers in under 1.5 seconds, comfortably inside the 5-second limit.
Real Partner Exchange expertise
We understand both bidding modes, on-demand and conditional, plus Instant Cash Offers and net-proceeds bid logic. That depth means fewer mistakes and faster launches.
Trusted delivery
5.0 rated, 500+ projects delivered, 12 years of experience, with developers available for new projects now.
Faster than in-house hiring
No recruiting cycle and no ramp-up on TPX quirks. We start in days, not months.
Have custom TPX requirements?
Every collectibles business operates on unique margin parameters. Let’s map out a custom bidding architecture tailored precisely to your store.
How Our TradePost TPX API Integration Works
TradePost routes each new Seller listing to relevant Market Makers and gives you up to 5 seconds to respond with a bid. The developers you hire build that entire round trip to run automatically, from receiving the webhook to submitting your offer through the GraphQL API.
You can bid two ways, and we build for both. On-demand bidding answers live webhook opportunities in real time. Conditional bidding executes automatically when a listing matches your pre-set rules.
Listing event received
TradePost sends a webhook to your Gaincafe-built endpoint with full item details.
The Problem
TradePost routes each new Seller listing to relevant Market Makers and gives you up to 5 seconds to respond with a bid.
Our Integration
Your Gaincafe-built endpoint receives the webhook instantly with complete listing information, ready for automated processing.
Valuation runs
Your pricing algorithm pulls market indexes and calculates a target offer.
The Problem
The system must evaluate listing value in real time and determine a competitive bid before the response window expires.
Our Integration
Your pricing algorithm pulls market indexes and automatically calculates the ideal offer based on your predefined rules.
Bid submitted via GraphQL
Your net offer to the Seller is posted back to TPX, well inside the deadline.
The Problem
The bid must be submitted within TradePost's response window while ensuring accuracy and compliance with your bidding rules.
Our Integration
The calculated offer is automatically submitted back to TPX through the GraphQL API within seconds.
Instant Cash Offer shown
If yours is the highest bid, the Seller sees it as an Instant Cash Offer.
The Problem
The highest qualifying offer must be surfaced to the Seller immediately.
Our Integration
When your bid wins, TradePost displays it instantly as an Instant Cash Offer to the Seller.
What Our Hired TradePost Developers Build for You
Subheading: A complete TradePost API integration, engineered around your margins and your tech stack.
Low-Latency Webhook Middleware
(AWS Lambda & Edge) Serverless edge functions parse incoming listing payloads and trigger your valuation logic in milliseconds, leaving headroom under the 5-second TPX timeout.
Conditional and On-Demand Bidding
(Bidding Engine) We support both TPX bidding modes. React to live webhook opportunities, or set automated rules that fire bids whenever a listing matches your category, grade, and price conditions.
Algorithmic Pricing Rules
(Valuation Engine) Custom formulas calculate each bid from target margins, grading scores, and shipping schedules, so every Instant Cash Offer protects your spread.
Multi-Marketplace Price Syncing
(API Aggregator) We query live indexes such as TCGPlayer Market, eBay sold history, Scryfall, and PriceCharting to ground every offer in real demand data.
Automated Multi-Channel Listing
(Inventory Router) When a bid is accepted, the asset is added to your database and listed on eBay, TCGPlayer, and Shopify automatically.
Dynamic Risk Control Filters
(Security & Safety) Protect capital with bid ceilings, category blacklists, daily budget caps, and human-in-the-loop review alerts.
ERP and Accounting Connectors
(Enterprise Sync) Push purchases, cost of goods sold, and sales data straight into QuickBooks, Salesforce, or HubSpot.
TradePost Integration Built for Your Business Model
Whether you run a card shop, manage a collectibles fund, or wholesale across global marketplaces, the team you hire shapes the TPX integration around your workflow.
Hobby & Card Stores
Problem
Manually evaluating hundreds of raw and graded cards eats hours and causes pricing errors and lost trades.
Our Integration
Low-latency webhook processors match TradePost listings to your catalog, query price APIs, and submit instant quotes.
How to Hire Our TradePost TPX Developers
From first call to first bid, a simple path to get specialists working on your integration.
Share your goals
Tell us your buying budget, card categories, and margin rules on a free consult.
Pick your model
Choose dedicated, fixed-scope, or staff augmentation.
Meet your developers
Review profiles and align on scope and timeline.
Kick off
Sandbox setup, credentials, and your first bidding logic within the first sprint.
Launch and monitor
We ship to production with structured logging, alerts, and a dashboard for daily offers and closed deals.
Share your goals
Tell us your buying budget, card categories, and margin rules on a free consult.
Pick your model
Choose dedicated, fixed-scope, or staff augmentation.
Meet your developers
Review profiles and align on scope and timeline.
Kick off
Sandbox setup, credentials, and your first bidding logic within the first sprint.
Launch and monitor
We ship to production with structured logging, alerts, and a dashboard for daily offers and closed deals.
Frequently Asked Questions
Understand the compliance protocols, server capacities, and safety logic behind our TradePost TPX API middleware.
Ready to Hire Your TradePost TPX Team?
Become the default buyer on the TPX marketplace. Hire developers who implement your valuation rules on secure serverless webhooks that bid in under 1.5 seconds.
- Comprehensive TPX discovery to map card categories, budget limits, and margin formulas.
- High-performance serverless pipeline with on-time bid submission under the 5-second limit.
- Direct downstream syncing of approved purchases to Shopify, eBay, and QuickBooks.