Carbon Trade Exchange launches API for direct marketplace access

Carbon Trade Exchange said it has launched a self-service Exchange API that lets approved partners connect directly to its live carbon credit marketplace. The move opens up programmatic trading, embedded listings and automated retirement tools for corporate buyers, brokers and commerce platforms.

Why it matters: - The API turns CTX from a website-based marketplace into infrastructure that other companies can build into their own products. - Corporate buyers, brokers, ESG platforms and e-commerce operators can now connect directly to live carbon credit pricing and trading. - CTX says the rollout could create a new distribution channel for real exchange volume.

What happened: - Carbon Trade Exchange launched its Exchange API Solution on Aug. 25, 2026. - The integration layer lets external platforms, corporate buyers and brokers access CTX's live carbon market from their own websites, apps and internal systems. - Wayne Sharpe, CEO of Carbon Trade Exchange, called the launch one of the most significant infrastructure moves in CTX's 18-year history. - CTX said the Exchange API Solution is live and has already processed real trades through a retail integration partner. - Partners can request API access and open a Corporate API Account through API access and documentation or the company's website.

The details: - The API offers three core functions: a real-time Live Listings Feed, a Fee & Cost Calculator and Programmatic Trading. - The Listings feed shows every available carbon credit on the exchange. - The calculator returns a buyer-ready cost breakdown before a trade is placed. - Programmatic Trading lets a partner complete a live purchase with a single API call. - The execution flow mirrors a direct click on CTX's website, with funds moved, inventory updated and settlement triggered. - Each partner receives an individually encrypted API key protected by multi-factor verification. - Administrators can set listing-visibility rules by vintage, standard or region. - Built-in analytics give CTX call-level visibility into partner activity. - The API draws on CTX inventory from more than 50 countries. - CTX lists credits certified under Verra VCS, Gold Standard, UNFCCC CDM and Global Carbon Registry. - Wholesale pricing runs from $0.25 to $65.00 per tonne, with resale partners adding their own margin on top. - CTX says B2B retail buyers remain anonymous to CTX. - Buyers can pay platforms by credit card, from as little as 10 tonnes CO2e up to enterprise volumes. - CTX holds credits in escrow, so partners do not need to buy or warehouse inventory themselves. - The company also said it has passed 1 billion tons CO2e traded since inception in 2008.

Between the lines: - The launch pushes CTX deeper into embedded commerce, where offsets can be sold at checkout or inside sustainability dashboards without a user leaving a partner platform. - For brokers and data vendors, the live feed can power custom quotes and curated catalogs instead of manual sourcing. - The anonymity model lets partners front the customer relationship while CTX remains the underlying exchange engine. - Sharpe said an API key can be issued in minutes and that every trade cleared through the API becomes real volume on CTX.

What's next: - CTX says corporate buyers and ESG platforms can use the API to automate quarterly credit retirement in line with net-zero targets. - Retail and e-commerce platforms can offer carbon offsets as a branded add-on at checkout. - Brokers and data vendors can pull live pricing and inventory data to build their own products and pricing tools. - CTX will continue issuing retirement certificates in the name of the corporate, retail or broker partner. - The company said the API is designed to make CTX easier to integrate than other carbon marketplaces.