Non-governmental organizations (NGOs) slammed the G20's plans to combat poverty as woefully insufficient.
"Political courage does not seem to be widespread in Los Cabos," said Tobias Kahler, head of the German division of the organization ONE.
"The G20 is becoming a debating club which promises a lot but does not do much," he said.
The two-day summit of industrialized and developing nations in the Group of 20 (G20) is set to end Tuesday with a final declaration in the Mexican resort town of Los Cabos.
The summit, Kahler complained, delivered several announcements but again took no serious steps in the fight against poverty.
"What they want to do is too slow, too late, not consistent enough, and is partially headed in the wrong direction," Oxfam spokesman Joern Kalinski said in Los Cabos.
He also criticised the failure to discuss the "absurd" biofuels policy that pushes up the price of foodstuffs and state investment in small-scale agriculture. For Oxfam, there are "major conflicts of interests" within the G20.
World Vision, which focuses on the welfare of children, praised host Mexico for putting food at the centre of the agenda.
"President Felipe Calderon has shown his strength and did not allow himself to be pushed aside despite the euro crisis and the Greek election: he pressed through his issues," said spokeswoman Silvia Holten.
The G20 acknowledged chronic malnutrition as one of its priorities, and its summit in Mexico has been the group's most transparent to date, she said. Civil society issues were included in an "exemplary way," Holten added.