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 cu-aaii/claude-skills --skill gateway-usagegit clone --depth 1 https://github.com/cu-aaii/claude-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/cu-aaii/claude-skills/gateway-usage)<a href="https://agentmods.dev/skills/cu-aaii/claude-skills/gateway-usage"><img src="https://agentmods.dev/badge/skills/cu-aaii/claude-skills/gateway-usage/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/cu-aaii/claude-skills/gateway-usage"><img src="https://agentmods.dev/badge/skills/cu-aaii/claude-skills/gateway-usage.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 | $0.00039 | $0.01763 |
| Opus 5 | $0.00019 | $0.00881 |
| Sonnet 5 | $0.00008 | $0.00353 |
| Haiku 4.5 | $0.00004 | $0.00176 |
Grade A, and why
gateway-usage scanned grade A with 1 finding 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **Never** run your own `curl` with the key inline, **never** `echo`/`grep`/`printf` the raw key value, and **never** pass the key as `ANTHROPIC_AUTH_TOKEN="sk-..." ...` inline in a command. Any of those writes the live How it starts
The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cornell AI Gateway usage check
Use this skill whenever a user asks about their Cornell AI Gateway (LiteLLM, api.ai.it.cornell.edu) spend, budget, or remaining usage on their virtual key.
What this skill does
Run the bundled scripts/usage.sh, which:
- Resolves the gateway key from a 4-source order (env, then macOS Keychain, then
cornell-ai-helperconfig.toml, then Cowork plugin mount), so one file works across the Claude Code CLI, a managed Mac, and the Cowork sandbox. - Makes one cheap 1-token completion call to capture the live
x-litellm-*response headers (spend, max budget, per-call cost, gateway version). - Attempts
GET /key/infoas a bonus (some keys may have broader access), but expects and handles a 403 gracefully. On the Cornell gateway, normal end-user keys are restricted tollm_api_routesonly and cannot call/key/info,/user/info, or/spend/logs. Header data is the primary and usually only source. - Prints a clean summary: spend to date, max budget, computed remaining budget, this check's own cost, TPM/RPM limits if present, and the standing billing caveats (flat $0.002/request fee, $10/mo free tier is per TEAM not per key, 90-day key expiry, midnight-UTC reset cadence).
Key-safety rules (do not violate)
The whole point of this skill is that the key stays inside usage.sh and never reaches the chat transcript. To keep it that way:
- Only invoke the skill by running the bundled script. Let the script resolve the key internally.
- Never run your own
curlwith the key inline, neverecho/grep/printfthe raw key value, and never pass the key asANTHROPIC_AUTH_TOKEN="sk-..." ...inline in a command. Any of those writes the live credential into the transcript permanently. - The script already truncates to the last 4 characters (
...XXXX). Preserve that truncation in everything you show the user. If you ever see a fullsk-value in output, stop and warn the user their key is exposed and should be rotated.
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.
- 8d ago First seen · 71 lines · 39 tokens per session scan A a09760a6eef7
gateway-usage is a skill published in the GitHub repository cu-aaii/claude-skills (4 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 1,763 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
comptable
Comptabilité, fiscalité et facturation pour entreprises françaises. Gère écritures PCG, déclarations TVA, IS/IR, clôture annuelle, liasse fiscale (2033/2065), FEC, états financiers, et chaîne facturation (mentions obligatoires, numérotation, Factur-X/UBL/CII, plateformes agréées PDP/PA, e-reporting, réforme 2026…
fiscaliste
Fiscaliste IA pour la fiscalité personnelle des particuliers français : optimisation et déclaration de l'impôt sur le revenu, IFI, revenus du capital, revenus fonciers, equity salarial, crypto-actifs et PER. Couvre le calcul de l'IR (barème, quotient familial, décote, PAS, CEHR, revenus exceptionnels), la déclaration…
syndic
Gère un parc de copropriétés en France avec vue portfolio consolidée. Couvre administration, comptabilité (décret 2005, plan comptable copro, 5 annexes), assemblées générales (convocation, PV, notification), appels de fonds, travaux, fournisseurs, recouvrement d'impayés et transition de syndic. Maîtrise les majorités…
financial-statement-analysis
Reads a set of financial statements and establishes what changed and why — fluctuation analysis against prior period and against budget, profitability, liquidity, solvency and efficiency ratios, benchmarking, and the non-GAAP measures presented alongside them. Use this to interpret results, review a counterparty's or…
daily-budget-check
Run a daily spend check-in against a daily budget on the Agent Monitor dashboard — today's spend vs the daily target, pace through the day, and the projected overage if the current pace holds. Uses /api/pricing/cost and /api/sessions (grouped by startedat = today). Use for a quick daily spend check-in or a…
ib-collar
Generate tactical collar strategy reports for protecting PMCC positions through earnings or high-risk events. Requires TWS or IB Gateway running locally.