[skills]

Diplomacy (Cha)

Starting
Attitude
Diplomacy DC
Hostile 25 + creature's Cha modifier
Unfriendly 20 + creature's Cha modifier
Indifferent 15 + creature's Cha modifier
Friendly 10 + creature's Cha modifier
Helpful 0 + creature's Cha modifier

You can use this skill to persuade others to agree with your arguments, to resolve differences, and to gather valuable information or rumors from people. This skill is also used to negotiate conflicts by using the proper etiquette and manners suitable to the problem.

Check

You can change the initial attitudes of nonplayer characters with a successful check. The DC of this check depends on the creature's starting attitude toward you, adjusted by its Charisma modifier. If you succeed, the character's attitude toward you is improved by one step. For every 5 by which your check result exceeds the DC, the character's attitude toward you increases by one additional step. A creature's attitude cannot be shifted more than two steps up in this way, although the GM can override this rule in some situations. If you fail the check by 4 or less, the character's attitude toward you is unchanged. If you fail by 5 or more, the character's attitude toward you is decreased by one step.

You cannot use Diplomacy against a creature that does not understand you or has an Intelligence of 3 or less. Diplomacy is generally ineffective in combat and against creatures that intend to harm you or your allies in the immediate future. Any attitude shift caused through Diplomacy generally lasts for 1d4 hours but can last much longer or shorter depending upon the situation (GM discretion).

Request Diplomacy
DC Modifier
Give simple advice or directions
–5
Give detailed advice
+0
Give simple aid
+0
Reveal an unimportant secret
+5
Give lengthy or complicated aid
+5
Give dangerous aid
+10
Reveal an important secret
+10 or more
Give aid that could result in punishment
+15 or more
Additional requests
+5 per request

If a creature's attitude toward you is at least indifferent, you can make requests of the creature. This is an additional Diplomacy check, using the creature's current attitude to determine the base DC, with one of the following modifiers. Once a creature's attitude has shifted to helpful, the creature gives in to most requests without a check, unless the request is against its nature or puts it in serious peril. Some requests automatically fail if the request goes against the creature's values or its nature, subject to GM discretion.

Gather Information
You can also use Diplomacy to gather information about a specific topic or individual. To do this, you must spend at least 1d4 hours canvassing people at local taverns, markets, and gathering places. The DC of this check depends on the obscurity of the information sought, but for most commonly known facts or rumors it is 10. For obscure or secret knowledge, the DC might increase to 20 or higher. The GM might rule that some topics are simply unknown to common folk.
Action

Using Diplomacy to influence a creature's attitude takes 1 minute of continuous interaction. Making a request of a creature takes 1 or more rounds of interaction, depending upon the complexity of the request. Using Diplomacy to gather information takes 1d4 hours of work searching for rumors and informants.

Try Again

You cannot use Diplomacy to influence a given creature's attitude more than once in a 24-hour period. If a request is refused, the result does not change with additional checks, although other requests might be made. You can retry Diplomacy checks made to gather information.

Special

If you have the Persuasive feat, you gain a bonus on Diplomacy checks.

Plant Notion (Bluff and Diplomacy)

Giant Hunter's Handbook
You can use Bluff and Diplomacy together to make a request of a creature, without it even realizing you have made the request.

Check

You can gradually coax a target into thinking a suggestion is entirely its own idea, making the creature more likely to act on the idea than if you had suggested it outright. You discuss topics subtly relevant to the request, asking leading questions and narrowing the scope of the conversation so that the target eventually decides to take a specific action you have led it to.

You first attempt a Bluff check to convince the target that your request was actually its idea. This is always treated as far-fetched circumstances, resulting in a -10 penalty on the check. If successful, you then attempt a Diplomacy check to make the request of the creature, treating its attitude toward you as indifferent for this single request (regardless of its actual attitude).

Action

Planting the notion and then coaxing a target into suggesting the notion himself each require at least 1 minute of continuous interaction. This can be difficult to arrange with a hostile or unfriendly creature, though giants are sometimes more willing to have longer discussions with foes they consider harmless.

Diplomacy Skill Unlocks

Pathfinder Unchained
With the Signature Skill feat and sufficient ranks in Diplomacy, you earn the following.

5 Ranks: The time required to influence a creature's attitude or gather information is halved.

10 Ranks: You can attempt to adjust a creature's attitude in 1 round by taking a -10 penalty. If you take 1 minute to adjust a creature's attitude, add your Charisma bonus to the number of hours that attitude change persists.

15 Ranks: You can attempt to adjust a creature's attitude in 1 round with no penalty. If you take 1 minute to adjust a creature's attitude, the duration of the resulting change is measured in days, not hours. You can gather information in 10 minutes by taking a -5 penalty.

20 Ranks: You can attempt to adjust a creature's attitude in 1 round with no penalty. If you take 1 minute to adjust a creature's attitude, the duration of the resulting change is measured in weeks, not hours. You can gather information in 1d4 minutes with no penalty.

Hypnotism (Occult Skill Unlock)

Occult Adventures
You use the power of suggestion and subtle psychic influence to alter a subject's mind and dredge up repressed memories.

Requirement

Characters capable of casting psychic spells or who have the Psychic Sensitivity feat gain access to this skill unlock. A character must be trained in the appropriate skill to use that skill’s unlock, even if the skill can normally be used untrained. It’s impossible to take 10 for an occult skill unlock. Occult skill unlocks require intense concentration and strenuous effort, so the amount a character can use each skill unlock is limited to once per day or per week. This limit is for all uses of the skill unlock. 

Check

You can use hypnotism once per day. The DC of a Diplomacy check to hypnotize is 20 + the subject's Will save modifier against mind-affecting enchantment (Compulsion) effects. All uses of hypnotism are mind- affecting enchantment (Compulsion) effects.

Implant Suggestion

You can implant a suggested course of reasonable action in the mind of a willing creature, along with a defined trigger. To implant a suggestion, you spend 1 minute inducing a trance-like state in the subject, after which you attempt a Diplomacy check. If the check is successful, you implant the course of action, as a suggestion spell with a duration of 10 minutes plus 10 additional minutes for every 1 by which your check result exceeds the DC. If the subject ceases to be willing, it can attempt a Will save once each round to shake off the effects. The save DC is equal to 10 + 1/2 your character level + your Charisma modifier. You can attempt to subtly implant a suggestion in the mind of an unwilling creature with an attitude of indifferent or better after 1 minute of continuous, calm interaction with that creature, but the DC is 10 higher.

Recall Memory

You can draw out forgotten memories from a willing subject. You spend 1 minute inducing a calming, trance-like state in the subject, after which you attempt a Diplomacy check. If you succeed at the check, the hypnotized creature can reroll any previously failed Intelligence or Knowledge check to recall the forgotten information with a +4 bonus. The information must be something the subject once knew or was exposed to.

Action

Hypnotism takes 1 minute of calm interaction.

Try Again

Yes. You can try to hypnotize the same creature more than once, but only once per day.