cosmicstack-labs/negotiation
>- A comprehensive skill for mastering negotiation — from preparation and frameworks to tactics, multi-party dynamics, and closing. Covers salary negotiation, buyer vs seller dynamics, remote negotiation, and more.
npx skills add https://github.com/cosmicstack-labs/mercury-agent-skills --skill negotiation
Negotiation is not about winning or losing — it is about creating value while protecting your interests. Every negotiation is an information exchange wrapped in a social dynamic. The best negotiators prepare relentlessly, listen more than they speak, and know exactly what they want before they walk in.
| Level | Name | Description |
|-------|------|-------------|
| 1 | Intuitive | No formal preparation. Negotiates by instinct, reacts emotionally, takes positions personally. Often leaves money on the table. |
| 2 | Aware | Understands basic concepts like BATNA and anchoring. Prepares occasionally but inconsistently. Wins sometimes but can't explain why. |
| 3 | Structured | Consistently prepares using frameworks. Uses principled negotiation techniques. Separates people from problems. Creates value regularly. |
| 4 | Strategic | Proactively shapes the negotiation landscape. Manages information flow. Uses tactical empathy and calibrated questions. Handles multi-party deals. |
| 5 | Master | Negotiates unconsciously competently. Reads room dynamics instantly. Creates win-win outcomes that build long-term relationships. Can negotiate anything with anyone. |
Assessment: Where are you today? Most professionals operate at Level 2. Read the frameworks below and apply one new technique per negotiation to advance.
Your BATNA is your fallback if the deal falls through. It is your single greatest source of negotiation power.
How to develop your BATNA:
Example:
> "If I don't get this job offer, my BATNA is staying in my current role at $95k with a known promotion pipeline. Therefore, I won't accept less than $100k at the new company unless the equity or growth potential compensates."
Common BATNA mistake: Overestimating your alternatives. Be brutally honest.
The ZOPA is the overlap between what both parties are willing to accept. If your maximum is below their minimum, no deal exists.
How to find the ZOPA:
Visual metaphor:
Seller's range: $80k ───────────────────── $100k
Buyer's range: $90k ───────────────────── $120k
ZOPA: $90k ────────── $100k
If no overlap exists, you have two options: change the variables (add benefits, adjust terms) or walk away.
Developed by the Harvard Negotiation Project (Fisher & Ury, "Getting to Yes"). Four key elements:
Application example:
> Instead of: "I want a $20k raise or I quit." (positional)
> Say: "I've benchmarked my role at $120k market rate. My contributions this year drove $400k in new revenue. Can we explore a compensation adjustment that reflects this impact?" (principled)
A one-page visual framework adapted from Alex Osterwalder's business model canvas. Map out:
> Use the canvas before every significant negotiation. It takes 15 minutes and pays back exponentially.
Before any negotiation, invest time in understanding:
Research sources: LinkedIn, Crunchbase, industry reports, press releases, mutual connections, annual reports, Glassdoor (for salary), social media.
| Category | Definition | Example |
|----------|------------|---------|
| Must-have | Non-negotiable minimum | Base salary of $110k |
| Want | Important but flexible | 4 weeks vacation |
| Nice-to-have | Value if available | Annual bonus target |
| Tradeable | Can concede for value | Start date flexibility |
Write down all four before entering. This prevents emotional decision-making in the moment.
The first number mentioned in a negotiation sets the psychological anchor. Research shows the final outcome correlates heavily with the first offer.
Rules for anchoring:
Example:
> "Based on market data for this role in our region, plus my 8 years of experience and the $2M in revenue I drove last year, I'm targeting a base of $130k."
This is the line you will not cross. It should be determined by your BATNA and your must-have objectives — not by emotion.
Walkaway checklist:
> If you cannot walk away, you cannot negotiate. Period.
The single most underrated negotiation skill. Most people listen to respond, not to understand.
Technique:
Why it works: People who feel heard are more cooperative and reveal more information.
Repeating the last 1-3 words of what someone said, with an upward inflection.
Example:
> Them: "We can't go above $95k for this position."
> You: "Above $95k...?"
> Them: "...well, I mean, we have some flexibility if the candidate is exceptional."
Why it works: Mirroring creates rapport and prompts the other person to elaborate. It buys you thinking time and shifts the burden of explanation back to them.
Naming the other person's emotion to defuse it.
Formula: "It sounds like..." / "It seems like..." / "It feels like..."
Example:
> "It sounds like you're concerned about setting a precedent with this salary level."
Why it works: Labeling validates emotions without agreeing with them. It moves the conversation from emotional reaction to cognitive processing.
Open-ended questions starting with "How" or "What" that guide the other person toward your desired outcome.
Power questions:
Avoid: "Why" questions — they sound accusatory. "Why would you offer that?" → "How did you arrive at that number?"
After asking a calibrated question — shut up. The first person to speak after a question usually concedes.
The power of silence:
Practice: Count to 8 in your head before responding. Most people crack at 4.
Never concede without getting something in return. Every concession should be:
Bad: "Fine, I'll take $105k." (unilateral concession)
Good: "If we move to $105k base, can we add a signing bonus of $10k?" (contingent trade)
When more than two parties are involved, complexity increases exponentially.
Example: In a startup acquisition negotiation, the parties include: founders, VCs, management team, acquirer's M&A team, and regulators. Founders and VCs may have conflicting interests (VCs want liquidity, founders want legacy). Align with the party whose incentives overlap most with yours.
Negotiating via video, email, or async channels requires different approaches than in-person.
| Factor | Email | In-Person |
|--------|-------|-----------|
| Relationship building | Poor | Excellent |
| Information gathering | Limited | Rich (tone, body language) |
| Record keeping | Automatic | Requires notes |
| Time pressure | Low (unless stated) | High (presence creates urgency) |
| Emotional temperature | Hard to gauge | Visible |
| Best for | Simple deals, documented proposals | Complex negotiations, relationship building |
Hybrid approach: Use email for initial proposals and documentation. Use video for relationship and complex trade-offs. Use in-person for final handshake moments.
Before closing, summarize everything agreed upon. This prevents misunderstanding and creates commitment.
Script:
> "Let me make sure I have this right. We've agreed on a base of $115k, a signing bonus of $15k, and a start date of March 1st. Is that accurate from your side?"
A handshake is a symbol of trust, not a substitute for documentation. In some cultures, a handshake is a binding commitment. In others, it's a formality.
When to use a handshake: After verbal agreement, before written documentation. It signals good faith and closes the emotional chapter.
Never leave without: A clear next step and timeline for written documentation.
| Aspect | Buyer Perspective | Seller Perspective |
|--------|-------------------|-------------------|
| Goal | Minimize cost, maximize value | Maximize price, minimize concessions |
| Leverage | Competing options, ability to walk | Unique value, scarcity, alternatives |
| Risk | Overpaying, hidden problems | Undervaluing, leaving money on table |
| Strategy | Create competition, delay commitment | Differentiate, create urgency, build value perception |
| Information | Know your max, hide your urgency | Know your minimum, highlight your differentiation |
| Common trap | Anchoring on seller's first price | Conceding too quickly on price |
Key insight for buyers: The best way to get a fair price is to increase the seller's fear of losing the deal — by having credible alternatives and demonstrating willingness to walk.
Key insight for sellers: The best way to maximize price is to increase the buyer's perception of value — by understanding their needs and framing your offering as the solution to a costly problem.
> "I'm very excited about this role and believe I'd be a great fit. Based on my research and experience, I was hoping for a base around $X. Is there flexibility in the offer to get closer to that number?"
> "I appreciate the offer of $Y. With my background in [specific skill area] and the market rate for this role being $X-$Z, would you be able to revisit the base?"
10. Accepting the first offer. The first offer is rarely their best. Counter. Even a small ask signals you know your worth.
*"In business, you don't get what you deserve. You get what you negotiate." — Chester L. Karrass*
Take cosmicstack-labs/negotiation from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.