The government tort claim required under Government Code section 910 must include specific information: the name and address of the claimant, the date, place, and circumstances of the incident, a general description of the injury, the name of any public employee involved if known, and the amount claimed or an indication that the claim exceeds a jurisdictional amount. Courts have held that substantial compliance is generally sufficient, but claims that omit material facts or misdescribe the location or mechanism of injury can create significant complications later, including arguments that the claim failed to fairly apprise the public entity of the nature of the potential liability. Dangerous condition cases sometimes implicate more than one public entity, for example a roadway maintained by a city that intersects with infrastructure controlled by a different department, a joint powers authority, or a state agency. Because the six-month deadline runs independently against each one, early investigation should identify every entity with potential responsibility so claims can be timely presented against all of them.