My front break is leaking from a warn spot on the hose attached to the caliper.

You mean leaking? It should be easy to see where it is leaking. Often it is the rubber hose attaching the steel tube from the car frame to the brake caliper on the wheel.
If you need to see exactly where the fluid is leaking out, just put a little fluid into the master cylinder reservoir, and look at the caliper on the wheel while someone presses the brake pedal. You should be able to see if the leak is from the hose, or the brake caliper.

The hose can be replaced for just a few dollars, but it is a job for someone experienced in mechanic work. Once the new hose is on (or the new or reconditioned caliper if that was leaking), the brakes must be bled, all four of them.

From your discription, it sounds like your master cylinder and the brake booster are both bad.

I doubt the leak is from the bolt, it will be from where the flexible hose screw into the caliper or from the hose itself. The caliper can (unless it's cracked!) only leak from where the fluid goes in and around the piston seal.

I hope I have been of help but please do not hesitate to ask if you have any further questions.
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clean the area real well fill brake fluid to level.pump brakes check the leak to see where its coming from

If the fluid is low on the larger section of the master cylinder, it is probably an indication that the front disc brake pads are becoming worn. As the pads wear, the caliper piston moves out of the caliper, requiring more fluid to displace it. Since brake pressure warning and low fluid warning use the same indicator light on the dash, if the brakes are operating normally, its probably not a serious problem. If you had an actual brake system fluid leak, the brakes would not work properly(low pedal, mushy feel, etc.)
You should have the front pads checked, just in case they need to replaced now, rather than just refilling the brake fluid because if you fill it first, then find out the pads need replacement, when the caliper piston is pushed back into its bore, it will push the fluid back into the master cylinder, overflowing the reservoir.
Because brake fluid is hygroscopic, meaning that it attracts moisture from the atmosphere, the water and any associated corrosion/gunk it collects will settle by gravity to the lowest point, the calipers. So, you do not want to push that junk back toward the master cylinder(and thus through the anti-lock brake control), so the proper procedure to be used before pushing the piston in is to, using a brake hose pinch clamp, pinch off the hose, open the caliper bleeder valve, use a small diameter hose to direct the expelled fluid into a waste container. Then after pad replacement, pump the brake pedal to reseat the new pads against the rotors, then refill the master cylinder with appropriate fresh fluid.

Lastly, when there is a cold snap, the brake fluid will contract, many times causing the warning light to come on. Then after driving(due to heat under the hood warming the master cylinder), the light may go off, or you may see the light come on briefly when cornering. This is a normal indication of the aforementioned pad wear. Hope this helps.

Sounds as though you may either have a caliper or hose or maybe even a brake line leaking fluid. You would need to remove the wheel to find the leak.

Caliper Removal

1. CAUTION: Do not use heat to loosen a seized lug nut . Heat can damage the wheel and the wheel bearings.
   Loosen the lug nuts.
   1. Remove the center cap.
1. With the weight of the vehicle on the wheels, loosen the lug nuts.
1. WARNING: THE ELECTRICAL POWER TO THE AIR SUSPENSION SYSTEM MUST BE SHUT OFF PRIOR TO HOISTING, JACKING OR TOWING AN AIR SUSPENSION VEHICLE. THIS CAN BE ACCOMPLISHED BY TURNING OFF THE AIR SUSPENSION SWITCH LOCATED IN THE RH KICK PANEL AREA. FAILURE TO DO SO MAY RESULT IN UNEXPECTED INFLATION OR DEFLATION OF THE AIR SPRINGS WHICH MAY RESULT IN SHIFTING OF THE VEHICLE DURING THESE OPERATIONS.
   Raise and support the vehicle.
1. Remove the wheel and tire assembly.
   1. Remove the lug nuts.
   1. Remove the wheel and tire assembly.
2. CAUTION: Replace the lining if worn to or past specifications. Replace the brake shoes and linings in complete axle sets. Inspect the brake shoes and linings for wear or contamination.
3. WARNING: BRAKE FLUID CONTAINS POLYGLYCOL ETHERS AND POLYGLYCOLS. AVOID CONTACT WITH EYES. WASH HANDS THOROUGHLY AFTER HANDLING. IF BRAKE FLUID CONTACTS EYES, FLUSH EYES WITH RUNNING WATER FOR 15 MINUTES. GET MEDICAL ATTENTION IF IRRITATION PERSISTS. IF TAKEN INTERNALLY, DRINK WATER AND INDUCE VOMITING. GET MEDICAL ATTENTION IMMEDIATELY.
   Disconnect the front brake hose (2078).
   1. Remove the front brake hose bolt.
   1. Remove the copper washers. Plug the front brake hose.
1. Disconnect the front brake hose
4. Remove the disc brake caliper (2B120).
   1. Remove the two caliper bolts.
   1. Lift the front disc brake caliper (2B121) off the front disc brake caliper anchor plate.
5. On 4x2 vehicles, measure the front disc brake hub and rotor (1102) thickness.
   • Replace the front disc brake hub and rotor if not within specifications 27.7mm Min.
6. On 4x4 vehicles, measure the front disc brake rotor thickness.
   • Replace thhe front disc brake rotor if not within specifications. 27.7mm Min.
7. Inspect the disc brake caliper for leaks.
   • If leaks are found, disassembly is required

Either the caliper seals are leaking or the hose that connects the caliper to the steel line.

There is either air in the system or the brake hoses on one or both of the front calipers is worn and spongy.Solution:1st bleed the system(front) with a Mighty Vac hand pump.Maintain full fluid level.2nd check front calipers and hoses for leaks and cracks.Replace if needed

Besides changing the caliper did you by chance chg. the break hose going to it, there a 2-way hose fluid goes to caliper and returns thru same hose, and they have been known to cause what you have just discribed.