International whistleblower website WikiLeaks aims to raise $100,000 to offer as a reward for the full text of the controversial Trans-Pacific Partnership (TPP) free trade deal.

Wikileaks already leaked three chapters of the 29 chapters of the deal, but it wants the entire text, according to The Washington Post.

The organization referred to the remaining chapters of the free trade agreement in a statement on Tuesday as "America's most wanted secret" while launching a fund raising campaign.

"The transparency clock has run out on the TPP. No more secrecy. No more excuses. Let's open the TPP once and for all," WikiLeaks founder Julian Assange said in statement.

"It is a one-way ticket. Once signed, it will be locked in place for decades. But, the scariest thing about the TPP is that there are 26 chapters that carry our daily lives that we have not seen," the global transparency organisation said in a video posted on its YouTube channel, Russia Today reported.

TPP is a proposed regulatory and investment treaty being negotiated by 12 nations, including the U.S., Australia, Japan and Canada.

"The treaty aims to create a new international legal regime that will allow transnational corporations to bypass domestic courts, evade environmental protections, police the internet on behalf of the content industry, limit the availability of affordable generic medicines, and drastically curtail each country's legislative sovereignty," the statement added.

The text of trade deal is a classified document. The U.S. Trade Representative has shown part of the text to lawmakers, but opponents ask for more oversight, according to Reuters.

"[They] can't make this deal public because if the American people saw what was in it, they would be opposed to it," U.S. Senator Elizabeth Warren, a TPP critic, said in the WikiLeaks statemen.

Nearly 300 people have already pledged $32,000 within a few hours of the campaign's announcing, WikiLeaks said. The website also launched a new competition system that allows the public to pledge prizes towards each of the world's most wanted leaks.