The news sent shares 7.4% higher to 58 cents in late Friday trading on the Toronto Stock Exchange.
Commissioning at the plant has ramped up to expected levels and will likely reach full gold production during the first quarter of 2014.
"This is a major achievement for the company and a testament to the hard work of our employees in all areas from exploration to operations," said chief executive Neil Woodyer in a company statement.
Endeavour built the Agbaou mine, one of four in its portfolio, in 16 months and estimates $800 per ounce of all-in sustaining costs. The junior producer's other mines, which collectively produce 300,000 ounces per year, are located in Mali, Ghana and Burkina Faso. Now that Agbaou is close to being fully online, the company expects production to rise a third higher.
On top of that, the Houndé Project in Burkina Faso, now in the permitting phase, could add 180,000 oz. to the pipeline, according to a feasibility study released this month.
The Kofi project in southern Mali has shown resources estimated at 500,000 oz. of indicated (6.9 million tonnes at 2.3 g/t gold) and 702,000 ounces (12.4 million tonnes at 1.8 g/t gold) of inferred gold.
Like other junior gold miners, Endeavour's shares have suffered a blow in the markets, with the stock plunging more than 70% this year.