referral-program

referral-program is a skill for Claude Code, Codex from OpenClaudia/openclaudia-skills. It costs 76 tokens per session (2,614 once invoked), scanned A, original, MIT.

A guide to designing referral programs, where existing users invite other people and rewards or other incentives encourage those invitations.

In plain words
What is it for?
Use it to design one-sided, two-sided, or tiered rewards, referral links, invite systems, viral mechanics, and word-of-mouth campaigns.
Why use it?
It helps choose an incentive structure and map the steps needed to turn customer recommendations into repeatable user growth.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to design one-sided, two-sided, or tiered rewards, referral links, invite systems, viral mechanics, and word-of-mouth campaigns.

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Install with agentmods
npx agentmods add skills/openclaudia/openclaudia-skills/referral-program
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 OpenClaudia/openclaudia-skills --skill referral-program
Clone the repo
git clone --depth 1 https://github.com/OpenClaudia/openclaudia-skills

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 referral-program

README.md
[![agentmods](https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/referral-program/github.svg)](https://agentmods.dev/skills/openclaudia/openclaudia-skills/referral-program)
Your own site
<a href="https://agentmods.dev/skills/openclaudia/openclaudia-skills/referral-program"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/referral-program/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 referral-program

Your own site · 80×15
<a href="https://agentmods.dev/skills/openclaudia/openclaudia-skills/referral-program"><img src="https://agentmods.dev/badge/skills/openclaudia/openclaudia-skills/referral-program.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,614 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. Third-party audits
  • Socket pass 18 Mar 2026
  • Snyk pass 14 Feb 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00076 $0.02614
Opus 5 $0.00038 $0.01307
Sonnet 5 $0.00015 $0.00523
Haiku 4.5 $0.00008 $0.00261

Measured 10d ago against content hash 2abed9aa0c8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

referral-program 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.

skills/referral-program/SKILL.md · 384 lines

How it starts

The opening of the file, as written. The whole thing — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Referral Program Design

Design effective referral programs and viral loops that drive sustainable growth.


1. Referral Program Frameworks

One-Sided Incentives

Only the referrer gets rewarded.

Best for:

  • Products with strong organic word-of-mouth
  • Low-friction signups where the referred user needs no extra motivation
  • Cost-sensitive businesses

Examples:

  • Uber: "$10 credit for every friend you refer"
  • Amazon Associates: Commission on referred purchases

Template:

Refer a friend and get [reward].
Share your unique link: [referral_url]

Two-Sided Incentives

Both referrer and referred user get rewarded.

Best for:

  • Products requiring activation effort from new users
  • Competitive markets where new users need a nudge
  • Subscription businesses

Examples:

  • Dropbox: Both get 500MB extra storage
  • Airbnb: Referrer gets $25 credit, friend gets $40 off first stay
  • PayPal: Both get $10 when friend makes first transaction

Template:

Give [friend_reward], get [referrer_reward].
Share your link and you both win: [referral_url]

Tiered Incentives

Rewards increase with number of successful referrals.

Example tier structure:

Referrals Reward
1 Free month
3 Exclusive feature unlock
5 Premium plan for 3 months
10 Lifetime premium access
25 Cash payout or swag box

Best for:

  • Creating power referrers / ambassadors
  • Products with passionate user bases
  • Building a referral leaderboard culture

2. Viral Coefficient Calculation

The viral coefficient (K-factor) determines whether your referral loop is self-sustaining.

Formula

K = i * c

Where:
  i = number of invites sent per user
  c = conversion rate of each invite

If K > 1: viral growth (each user brings more than one new user)
If K < 1: referrals supplement but don't replace other acquisition

Example Calculation

Users send an average of 5 invites (i = 5)
15% of invites convert to signups (c = 0.15)
K = 5 * 0.15 = 0.75

With 1,000 initial users:
- Cycle 1: 1,000 * 0.75 = 750 new users
- Cycle 2: 750 * 0.75 = 563 new users
- Cycle 3: 563 * 0.75 = 422 new users
- Total after 10 cycles: ~3,570 additional users from referrals

Read the full file on GitHub · 384 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. 10d ago First seen · 384 lines · 76 tokens per session scan A 2abed9aa0c8d

Subscribe to this mod's changes

referral-program is a skill published in the GitHub repository OpenClaudia/openclaudia-skills (686 stars, last pushed yesterday), licensed MIT. It adds 76 tokens to every session and 2,614 once invoked, about $0.0004 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 2026-08-30.

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