Short answers, pulled from the story.
The political pact of the Franco-Polish Alliance was signed on the 19th of February 1921, by Polish Minister of Foreign Affairs Count Eustachy Sapieha and French Minister of Foreign Affairs Aristide Briand. The secret military pact followed two days later, on the 21st of February 1921. Both agreements did not take full legal effect until the economic pact was ratified on the 2nd of August 1923.
Under the secret military pact signed the 21st of February 1921, France was obliged to keep lines of communication free and to keep Germany in check if Poland were attacked. France was not required to send troops or to declare war. In May 1939, Commander Maurice Gamelin promised a bold relief offensive within three weeks of a German attack, though what France ultimately delivered was the limited Saar Offensive.
The Kasprzycki-Gamelin Convention was signed on the 19th of May 1939, in Paris and was named after Polish Minister of War Affairs General Tadeusz Kasprzycki and Commander of the French Army Maurice Gamelin. It obliged both armies to provide help to each other in case of war with Germany. The convention was army-to-army rather than state-to-state, and lacked legal force because it depended on a political convention that was never separately ratified before the war began.
Czechoslovakian foreign policy under Edvard Benes avoided a formal alliance with Poland to prevent Czechoslovakia from being drawn into Polish-German territorial disputes. Doubts about the reliability of the Czechoslovakian army weakened its standing, while internal conflict between supporters and opponents of Pilsudski undermined Poland's position. France's reluctance to invest in its allies' industries, improve trade relations, or share military expertise further weakened the arrangement.
French ambassador to Poland Leon Noel wrote in October 1938 that it was of utmost importance to remove from French obligations anything that would deprive the French government of freedom of decision on the day Poland found itself at war with Germany. Foreign Minister Georges Bonnet then confirmed to Noel in writing that the agreement with Poland was full of gaps, and that those gaps were deliberately designed to keep France away from war.
The Franco-Polish Warrant Agreement, signed on the 16th of October 1925 in Locarno, extended the alliance as part of the broader Locarno Treaties. This agreement incorporated all previously signed Polish-French agreements into the system of mutual pacts maintained by the League of Nations.