What is the test for a pro se petition to be successful in habeas?

Rule 2(c) of the Rules Governing 2254 Cases requires every habeas petition to (1) specify all the grounds for relief available to the petitioner; (2) state the facts supporting each ground; and (3) state the relief requested. Although, as stated above, pro se petitions receive less scrutiny for precision that those drafted by lawyers, a petitioner must give fair notice of his claims by stating the factual and legal elements of each claim in short, plain, and succinct manner. See Mayle v. Felix, 545 U.S. 644, 648 (2005) ("In ordinary civil proceedings . . . Rule 8 of the Federal Rules of Civil Procedure requires only 'a short and plain statement[.] . . . Rule 2(c) of the Rules Governing Habeas Corpus Cases requires a more detailed statement.") Allegations in a petition that are vague, conclusory, or palpably incredible, and that are unsupported by a statement of specific facts, are insufficient to warrant relief and are subject to summary dismissal. Jones, 66 F.3d at 204-05; James, 24 F.3d at 26.