Sales Rep pack
Claude Skill
Lost-Deal Postmortem
Runs a structured post-mortem on a lost deal — surfaces the actual reason, not the convenient one.
What it does
Walks through a closed-lost deal with the AE and surfaces what actually killed it. Goes beyond "price" or "they went with competitor" to the structural reasons (wrong ICP, missing champion, weak discovery, poor proof). Designed to compound learning across the team.
When to use
- ✓After any meaningful lost deal
- ✓Patterns of losses you can't explain
- ✓Pre-quarterly review when the team needs to absorb lessons from the quarter
When not to use
- ✗Deals where the reason is unambiguous and acknowledged
- ✗When the AE is fresh off the loss and emotional — wait 24 hours
Install
Download the .zip, then unzip into your Claude skills folder.
mkdir -p ~/.claude/skills
unzip ~/Downloads/lost-deal-postmortem.zip -d ~/.claude/skills/
# Restart Claude Code session.
# Skill is now available — Claude will use it when relevant.SKILL.md
SKILL.md
---
name: lost-deal-postmortem
description: Use when running a post-mortem on a closed-lost sales deal. Triggers on "lost deal", "deal post-mortem", "why we lost", "deal review".
---
# Lost-Deal Postmortem
Closed-lost reasons recorded in CRM are usually wrong. "Price" or "competitor" are easy answers that mask structural issues. A good post-mortem surfaces the real one.
## Required inputs
1. **Deal context** — account, ASP, sales cycle length, who else was involved
2. **Stated reason for loss** — what prospect said, what AE wrote in CRM
3. **Timeline of the deal** — key milestones, when things felt good vs. wrong
4. **What competitive activity occurred** — who else was in the deal, when they engaged
5. **What we'd commit to do differently** — not yet decided
## The 5-question audit
### 1. Should we have been in this deal in the first place?
- ICP fit — were they actually our target customer?
- Buying readiness — did they have budget, authority, pain, timing?
- The signal we missed: what would have told us early this was a poor fit?
### 2. Did we have a real champion?
- Champion test: would they have advocated for us in a meeting we weren't in?
- If no — when did this become clear? Could we have built one?
- If yes — did they actually have the political capital to win?
### 3. Did we run good discovery?
- Did we understand the problem in their terms or ours?
- Did we know who else needed to approve?
- Did we know the competitive comparison they were running?
- The deepest question we did NOT ask that we should have
### 4. Did we deliver proof that mattered?
- Demo / POC / reference call — were they tuned to this prospect's concern?
- What proof did the competitor provide that we didn't?
- Did we have the right case study / number / customer to cite?
### 5. Did we read the room?
- Late-stage signals we missed: slow responses, fewer stakeholders, scope changing
- Did we push too hard when we should have paused, or vice versa?
- The point in the deal where we should have either escalated or walked
## Output
```
## Honest reason we lost
[Not the CRM reason — the real one. 1-2 sentences.]
## What was true 4 weeks before the loss that should have warned us
[The signal that, in hindsight, was clearly the lose-flag]
## What we'd do differently
- In qualification (would we have even taken this deal?)
- In discovery (the question we'd ask earlier)
- In proof (the asset / call / reference we'd line up)
- In close (the move we'd or wouldn't make)
## What was outside our control
[Honest. Sometimes the reason really is "they had a different need." Don't manufacture self-blame.]
## What this means for the pipeline
- Are other open deals showing similar patterns? Name them.
- Should we change our ICP / discovery process / proof library?
## Update to the playbook
[Concrete: what we'll add to the team's process based on this]
```
## What this is NOT
- A blame exercise
- A "the prospect was dumb" venting session
- An excuse to relitigate company-level decisions (pricing, packaging, ICP)
## Cadence
- Per-deal post-mortem on losses > $50K ASP
- Quarterly batch review of all lost deals for patterns
- The patterns are usually more valuable than the individual deals
Example prompts
Once installed, try these prompts in Claude:
- Lost a $180K deal. Stated reason: "went with [competitor]." Help me run a proper post-mortem.
- My team's win rate dropped 8 points this quarter. Audit our last 10 lost deals for patterns.