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 Ken-Technology/cold-email-skills --skill segmentationgit clone --depth 1 https://github.com/Ken-Technology/cold-email-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/ken-technology/cold-email-skills/segmentation)<a href="https://agentmods.dev/skills/ken-technology/cold-email-skills/segmentation"><img src="https://agentmods.dev/badge/skills/ken-technology/cold-email-skills/segmentation/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/ken-technology/cold-email-skills/segmentation"><img src="https://agentmods.dev/badge/skills/ken-technology/cold-email-skills/segmentation.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 | $0.00056 | $0.01703 |
| Opus 5.5 | $0.00022 | $0.00681 |
| Sonnet 5.5 | $0.00011 | $0.00341 |
| Haiku 4.5 | $0.00006 | $0.00170 |
Grade A, and why
segmentation 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 9d 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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Segmentation Skill
Split a campaign's qualified leads into the plan's segments so each group gets the right messaging. You write the segment descriptions the assigner reads, plus the Default segment's description.
You write them to segmentation.md in the campaign workspace (./cold-email/{slug}/) and create one folder per segment. The user runs the AI segments' descriptions as prompts in any AI tool (a chat, an AI column in Clay or a spreadsheet, one lead at a time) and the manual segments as hard filters in their list tool. Nothing is written to any platform.
Inputs
The plan's segments (name, sub-ICP, angle), the qualification audience description, and the applied search filters and qualification criteria (so you repeat neither). Read them from the campaign workspace:
plan.md- the segments, their angles and the segmentation mode.qualification.md, when it exists - the audience description to reuse, and the criteria not to repeat.search-strategy.md- the filters already applied. Never restate any of them in a segment.research.md- the client and the ICP.
When the skill runs on its own, without a workspace, take the same inputs from the user.
Pick the Mode
| Mode | In segmentation.md |
Use when |
|---|---|---|
| Manual | manual |
The split is a hard filter: industry, seniority, function, geo, company type, email validity. The user's list tool applies it for free. Prefer it. |
| AI | ai (the default) |
The split needs judgment from profile or company text (e.g. product company vs services hybrid). One AI call per lead. |
| A/B arms | percentage |
A sequence test: random split by weight, no criteria. |
Never mix A/B arms with criteria segments in one campaign.
The Default Segment
- Every campaign has a Default segment, and its folder is always
0 - default/(literal, no variation). Never rename it. - Default catches every qualified lead that fits no other segment, plus any lead the assigner is not confident about.
- Its description is the short general audience description: persona + org type only (e.g. "Financial advisors at independent advisory practices"). No criteria, filters, headcount, geography, value prop, or "doesn't fit the above" wording.
- Default gets its own sequence like any other segment. Leads that fall through still receive email.
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.
- 9d ago Changed · -53 lines 5a8f370988ad
- 2mo ago First seen · 157 lines · 56 tokens per session scan A 329f6d70753d
segmentation is a skill published in the GitHub repository Ken-Technology/cold-email-skills (4 stars, last pushed 6d ago), licensed MIT. It adds 56 tokens to every session and 1,703 once invoked, about $0.0002 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 2026-08-31.
segmentation compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| segmentationKen-Technology/cold-email-skills | Skill | 4 | 6d ago | MIT | A | 56 | Claude Code, Codex |
| cold-emailFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 177 | Claude Code, Codex |
| list-buildingFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 190 | Claude Code, Codex |
| claygentFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 131 | Claude Code |
| conditional-logicFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 128 | Claude Code |
| people-enrichmentFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 110 | Claude Code |
| scoringFrontal-so/outbound-skills | Skill | 9 | 1mo ago | MIT | A | 113 | Claude Code |