win-loss-decoder

win-loss-decoder is a skill for Claude Code, Codex from varunk130/ai-gtm-skill-library. It costs 73 tokens per session (800 once invoked), scanned A, original, MIT.

A win-and-loss analysis method that uses buyer statements and other evidence to identify why deals succeeded or failed, then groups and ranks those reasons by revenue.

In plain words
What is it for?
It helps review closed deals, buyer interviews, competitive losses, and churn to find recurring product, marketing, or sales problems and track whether fixes change the pattern.
Why use it?
Sales records often rely on quick rep-selected labels, which can make one explanation such as price appear too often. This method marks unsupported explanations as unknown and assigns each pattern to the team responsible for fixing it.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps review closed deals, buyer interviews, competitive losses, and churn to find recurring product, marketing, or sales problems and track whether fixes change the pattern.

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Install with agentmods
npx agentmods add skills/varunk130/ai-gtm-skill-library/win-loss-decoder
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add varunk130/ai-gtm-skill-library --skill win-loss-decoder
Clone the repo
git clone --depth 1 https://github.com/varunk130/ai-gtm-skill-library

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for win-loss-decoder

README.md
[![agentmods](https://agentmods.dev/badge/skills/varunk130/ai-gtm-skill-library/win-loss-decoder/github.svg)](https://agentmods.dev/skills/varunk130/ai-gtm-skill-library/win-loss-decoder)
Your own site
<a href="https://agentmods.dev/skills/varunk130/ai-gtm-skill-library/win-loss-decoder"><img src="https://agentmods.dev/badge/skills/varunk130/ai-gtm-skill-library/win-loss-decoder/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for win-loss-decoder

Your own site · 80×15
<a href="https://agentmods.dev/skills/varunk130/ai-gtm-skill-library/win-loss-decoder"><img src="https://agentmods.dev/badge/skills/varunk130/ai-gtm-skill-library/win-loss-decoder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 800 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00073 $0.00800
Opus 5.5 $0.00029 $0.00320
Sonnet 5.5 $0.00015 $0.00160
Haiku 4.5 $0.00007 $0.00080

Measured 26d ago against content hash cd890d0ef093, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

win-loss-decoder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 26d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gtm-skills/win-loss-decoder/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Win-Loss Decoder (SIGNAL Framework)

CRM loss reasons are picked by the rep in ten seconds, and "price" wins every time. Win-Loss Decoder rebuilds the reason from what the buyer said and did, codes it against a fixed taxonomy, and ranks patterns by revenue so product, marketing, and sales each get the fixes that are theirs.

Core Principle

The buyer's words decide the code. A reason without a quote or artifact from the buyer is logged as "unknown", not guessed.

The SIGNAL Framework

Letter Step The Question
S Sample Which deals, and is the sample balanced across wins, losses, segments, and reps?
I Interview What did the buyer say in a 20-minute conversation after the decision?
G Group Which taxonomy code does each reason map to?
N Number How much ARR sits behind each code, for wins and for losses?
A Assign Which team owns the fix for each code?
L Loop Did the fix change the rate of that code next quarter?

Reason Taxonomy

Code Covers Default owner
VALUE Buyer could not see enough return or urgency Marketing
FIT Missing capability, integration, or compliance need Product
TRUST Proof, references, security, or vendor-risk concerns Marketing / Security
PROCESS Lost the sales process: slow, no champion, wrong buyer Sales
PRICE Price or packaging, after the above are ruled out Pricing
STATUS QUO Buyer chose to do nothing Marketing / Sales

Process

  1. Sample - 15-30 recent decisions, at least one-third wins; exclude deals under the ACV floor
  2. Collect - buyer interviews first, then call notes and emails; note the source of every reason
  3. Code - up to two codes per deal (primary, secondary); PRICE only if VALUE and FIT are ruled out
  4. Weight - sum ARR by code for wins and losses; compute loss share - win share per code
  5. Rank - largest positive gap first; these are the reasons you lose more than you win on
  6. Route - one fix per top code, with owner and the metric that will show it worked

Read the full file on GitHub · 66 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 26d ago First seen · 66 lines · 73 tokens per session scan A cd890d0ef093

Subscribe to this mod's changes

win-loss-decoder is a skill published in the GitHub repository varunk130/ai-gtm-skill-library (7 stars, last pushed 12d ago), licensed MIT. It adds 73 tokens to every session and 800 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-20.

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