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 Kaguara/emerging-market-skills --skill integration-cost-modelinggit clone --depth 1 https://github.com/Kaguara/emerging-market-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/kaguara/emerging-market-skills/integration-cost-modeling)<a href="https://agentmods.dev/skills/kaguara/emerging-market-skills/integration-cost-modeling"><img src="https://agentmods.dev/badge/skills/kaguara/emerging-market-skills/integration-cost-modeling/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/kaguara/emerging-market-skills/integration-cost-modeling"><img src="https://agentmods.dev/badge/skills/kaguara/emerging-market-skills/integration-cost-modeling.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 | $0.00105 | $0.02321 |
| Opus 5 | $0.00053 | $0.01161 |
| Sonnet 5 | $0.00021 | $0.00464 |
| Haiku 4.5 | $0.00011 | $0.00232 |
Grade A, and why
integration-cost-modeling 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 12d 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 — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Integration cost modeling
The constraint
Two meters are running. Yours: per SMS, per verification, per API call, per thousand tokens, per gigabyte of egress. Theirs: a prepaid data bundle bought in small increments, from which every byte you send is deducted.
Both meters are invisible in code review, and neither appears in a design mock. The result is a well-built feature that costs more per user than it can possibly be worth, discovered a month after launch by someone reading an invoice. In markets where per-message and per-call prices vary several-fold between countries, cost is not a finance concern downstream of the build — it is a design input that determines the architecture.
Hard rules
| ID | Rule | Severity |
|---|---|---|
| COST-001 | Every user-facing action has a stated marginal cost before it is built. | critical |
| COST-002 | Choose the delivery channel by cost per delivered outcome, not by convenience. | critical |
| COST-003 | Rate-limit and de-duplicate every paid outbound message. | warning |
| COST-004 | Cap AI and inference spend per session with a hard ceiling and a fallback. | warning |
| COST-005 | Never spend the user's data allowance on telemetry or prefetch you chose. | warning |
| COST-006 | Cache and batch third-party calls against a known per-call price. | warning |
| COST-007 | Decide fail-open or fail-closed for every paid dependency, in writing. | warning |
| COST-008 | Serve from a region near the user and count egress. | warning |
| COST-009 | Re-check unit costs against real usage within a month of launch. | warning |
| COST-010 | Find out whether the operator will zero-rate your traffic before you spend a quarter optimising bytes. | warning |
Full detection criteria and remedies in rules.yml.
Judgment
Cost per delivered outcome, not cost per send. A push notification costs essentially nothing and reaches a user who has an active data session, which at tier C is often not the case for hours at a time. An SMS costs real money and arrives. Comparing them on unit price is comparing a free thing that does not happen against a paid thing that does. Work out the delivered rate for each channel in each market, then decide per message class: high-intent and time-critical earns SMS, everything else does not.
What ships with it
2 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.
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.
- 12d ago First seen · 222 lines · 105 tokens per session scan A cd4a58cb6daf
integration-cost-modeling is a skill published in the GitHub repository Kaguara/emerging-market-skills (7 stars, last pushed 17d ago), licensed MIT. It adds 105 tokens to every session and 2,321 once invoked, about $0.0005 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.
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