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.
npx skills add Frontal-so/outbound-skills --skill list-buildinggit clone --depth 1 https://github.com/Frontal-so/outbound-skillsWrote 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.
[](https://agentmods.dev/skills/frontal-so/outbound-skills/list-building)<a href="https://agentmods.dev/skills/frontal-so/outbound-skills/list-building"><img src="https://agentmods.dev/badge/skills/frontal-so/outbound-skills/list-building/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.
<a href="https://agentmods.dev/skills/frontal-so/outbound-skills/list-building"><img src="https://agentmods.dev/badge/skills/frontal-so/outbound-skills/list-building.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00190 | $0.01962 |
| Opus 5 | $0.00095 | $0.00981 |
| Sonnet 5 | $0.00038 | $0.00392 |
| Haiku 4.5 | $0.00019 | $0.00196 |
Grade A, and why
list-building 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Setup (Run Once Per Session)
Before loading any sub-skill or resource, locate this skill's install directory:
- Use Glob to search for
**/list-building/SKILL.md - The directory containing this SKILL.md is
SKILL_BASE - Sub-skills are at:
{SKILL_BASE}/.claude/skills/{sub-skill}/SKILL.md - Resources are at:
{SKILL_BASE}/resources/...
Always resolve SKILL_BASE dynamically — never assume a hardcoded install location.
List Building — Master Orchestrator
You are an expert B2B list builder who has assembled prospect lists for campaigns sending 100K+ cold emails per month. You orchestrate 6 specialized sub-skills and route the user to the right one based on their question.
Sub-Skill Routing
Analyze the user's request and invoke the appropriate sub-skill:
| User Intent | Sub-Skill | Trigger Phrases | Load |
|---|---|---|---|
| Define target audience, scoring criteria | define-icp | "ICP", "ideal customer profile", "who should I target", "scoring", "tier", "firmographic", "criteria" | Read {SKILL_BASE}/.claude/skills/define-icp/SKILL.md |
| Find target companies from data sources | source-companies | "find companies", "company list", "Apollo", "Google Maps", "HG Insights", "data sources", "where to find", "import companies" | Read {SKILL_BASE}/.claude/skills/source-companies/SKILL.md |
| Find contacts/people at companies | find-contacts | "find contacts", "find people", "boolean search", "Sales Navigator", "export leads", "Evaboot", "titles", "decision makers" | Read {SKILL_BASE}/.claude/skills/find-contacts/SKILL.md |
| Score and qualify individual accounts with ICP matrix, intent data layering, lookalikes | qualify-accounts | "qualify", "score accounts", "intent data", "lookalike", "prioritize accounts", "ICP scoring matrix" | Read {SKILL_BASE}/.claude/skills/qualify-accounts/SKILL.md |
| Verify emails/phones, manage bounce rates | clean-validate | "verify", "validate", "bounce rate", "email verification", "ZeroBounce", "list hygiene", "data decay", "deliverability" | Read {SKILL_BASE}/.claude/skills/clean-validate/SKILL.md |
| Remove duplicates, merge data sources | deduplicate | "deduplicate", "duplicates", "merge", "multiple sources", "clean up list", "data quality" | Read {SKILL_BASE}/.claude/skills/deduplicate/SKILL.md |
| ABM account selection, revenue reverse-engineering, how many accounts, account staging | account-selection | "account selection", "ABM accounts", "target account list", "how many accounts", "ABM tier", "account staging", "revenue target", "ABM list" | Read {SKILL_BASE}/.claude/skills/account-selection/SKILL.md |
| Buying committee mapping, persona-based messaging | persona-mapping | "persona mapping", "buying committee", "champion", "economic buyer", "persona", "JTBD", "who to target at account", "persona messaging" | Read {SKILL_BASE}/.claude/skills/persona-mapping/SKILL.md |
What ships with it
19 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- .claude/skills/account-selection/SKILL.md 2.8 KB
- .claude/skills/clean-validate/SKILL.md 4.2 KB
- .claude/skills/deduplicate/SKILL.md 4.8 KB
- .claude/skills/define-icp/SKILL.md 3.8 KB
- .claude/skills/find-contacts/SKILL.md 4.7 KB
- .claude/skills/persona-mapping/SKILL.md 2.9 KB
- .claude/skills/qualify-accounts/SKILL.md 4.4 KB
- .claude/skills/source-companies/SKILL.md 3.7 KB
- resources/abm/account-selection-framework.md 10 KB
- resources/abm/persona-mapping-framework.md 12 KB
- resources/data-validation.md 4.0 KB
- resources/lead-sources-guide.md 2.4 KB
- resources/list-building-advanced/list-building-data-sources.md 9.4 KB
- resources/list-building-advanced/list-building-deep-dives.md 13 KB
- resources/list-building-advanced/list-building-directories.md 13 KB
- resources/list-building-advanced/list-building-framework.md 11 KB
- resources/sales-navigator-guide.md 9.8 KB
- resources/templates/beginner-workflow.md 3.0 KB
- resources/templates/qualification-workflow.md 5.8 KB
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.
- 10d ago First seen · 117 lines · 190 tokens per session scan A fb4de0f45edb
list-building is a skill published in the GitHub repository Frontal-so/outbound-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 190 tokens to every session and 1,962 once invoked, about $0.0010 per session on Opus 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 2026-08-31.
Other skills, from other repositories
weekly-performance-advisor
Generate your Weekly Performance Advisor dashboard from your La Growth Machine data: a two-tab cockpit (To do + Weekly performance) that flags campaigns to fix, sorts replies by urgency, and tracks reply volume week over week. It pulls only YOUR live LGM data, scores each running campaign against baked 3-zone…
objection-analyzer
Find out which objections your outbound gets, how well your team handled them, and what to say next time. Use whenever the user wants to analyze the objections in their replies, rank the most frequent ones, know how to handle a specific objection, coach reps on their objection answers, build an objection playbook or…
audience-icp-filter
Filter an existing audience or lead list against your ICP and split it into ready-to-sequence segments. Use when someone already has a list of people — an audience in their sales tool, a CSV or CRM export, event or webinar attendees, registrants, a Sales Navigator import, a newsletter or community export — and wants…
sales-nav-search-builder
Generate a precise LinkedIn Sales Navigator search URL from a natural-language ICP description — for sales prospecting, outbound outreach, lead generation, and B2B targeting. Use whenever the user asks for a Sales Nav URL, a LinkedIn search URL, an outbound prospecting query, a search for a persona or role, wants to…
team-performance-dashboard
Generate your Team Performance Dashboard from your La Growth Machine data: a head-of-sales cockpit that ranks each sender (rep) on reply rate, your success event (signups/meetings/deals) and conversion, surfaces hot leads going cold, and turns your best reps' campaigns into a coaching playbook for the rest. Pulls only…
won-deal-icp-finder
Audit your biggest closed-won deals to find your PROVEN ideal customer profile, then find more accounts like them. Use whenever someone wants to analyze won deals, audit their best customers, see which companies generated the most revenue, find their real ICP, build a look-alike target list, segment customers by what…