Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
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.
[](https://agentmods.dev/skills/sahilrakhaiya05/gst-expert-skills/indian-gst-expert)<a href="https://agentmods.dev/skills/sahilrakhaiya05/gst-expert-skills/indian-gst-expert"><img src="https://agentmods.dev/badge/skills/sahilrakhaiya05/gst-expert-skills/indian-gst-expert/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/sahilrakhaiya05/gst-expert-skills/indian-gst-expert"><img src="https://agentmods.dev/badge/skills/sahilrakhaiya05/gst-expert-skills/indian-gst-expert.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 | $0.00174 | $0.02749 |
| Opus 5 | $0.00087 | $0.01375 |
| Sonnet 5 | $0.00035 | $0.00550 |
| Haiku 4.5 | $0.00017 | $0.00275 |
Grade A, and why
indian-gst-expert 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 — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Indian GST Expert (GST 2.0 — 2025/2026)
This skill covers the full Indian GST framework post the landmark GST 2.0 reforms effective September 22, 2025, through 2026 and into FY 2026-27.
Quick Reference
| Task | Go To |
|---|---|
| Calculate GST (CGST/SGST/IGST) | Calculator Script |
| Find rate for a specific item | Tax Slab Reference |
| Filing deadlines / compliance calendar | references/compliance_calendar.md |
| HSN/SAC code lookup guidance | references/hsn_sac_guide.md |
| E-invoicing rules | references/einvoicing_rules.md |
| ITC, RCM, penalties | references/advanced_rules.md |
| Registration thresholds | Registration Rules |
1. GST Calculator
Run the Python script for precise calculations:
python3 /home/claude/indian-gst-expert/scripts/gst_calculator.py <amount> --rate <rate> [--intrastate]
# OR use --category flag:
python3 /home/claude/indian-gst-expert/scripts/gst_calculator.py <amount> --category <category> [--intrastate]
Categories: exempt (0%), essential (5%), standard (18%), luxury (40%), precious_metals (3%), rough_stones (0.25%)
Default is interstate (IGST). Add --intrastate for same-state transactions (CGST + SGST).
Example outputs:
- Interstate ₹10,000 at 18%: IGST = ₹1,800, Total = ₹11,800
- Intrastate ₹10,000 at 18%: CGST = ₹900 + SGST = ₹900, Total = ₹11,800
For manual computation in responses: IGST = Amount × Rate%; CGST = SGST = Amount × (Rate/2)%
2. Tax Slab Determination
GST 2.0 Core Slabs (Effective September 22, 2025)
| Slab | Category | Key Examples |
|---|---|---|
| 0% (Nil) | Essentials & Exempt | Fresh/frozen vegetables, fresh fruit, milk, eggs, bread, roti/paratha/chapati, rice, flour, pulses, fresh meat/fish, unbranded honey; Individual health insurance (family floater, senior citizen plans); Term life insurance, ULIPs, endowment plans; Education services; Healthcare/hospital services; Books, newspapers; Cancer drugs (3 specific lifesaving drugs); 33 specified lifesaving drugs |
| 5% | Merit / Daily Use | Packaged namkeens, bhujia, instant noodles, pasta, chocolates, cornflakes, coffee, ghee, butter, cheese, dairy spreads; Hair oil, shampoo, toothpaste, soaps, tooth brushes, shaving cream; Agricultural equipment (tractors, parts, bio-pesticides, drip irrigation); Medical: thermometers, diagnostic kits, medical grade oxygen; Utensils, sewing machines; Baby feeding bottles, napkins; Apparel/footwear ≤ ₹2,500; Hotel stays (₹1,001–₹7,500/night); Essential medicines |
| 18% | Standard | Consumer durables: ACs, TVs (all sizes), refrigerators, washing machines, dishwashers; Electronics: laptops, mobiles (HSN 8517), monitors, projectors; Small cars (petrol/hybrid ≤1200cc & ≤4000mm; diesel ≤1500cc & ≤4000mm); 3-wheelers; Motorcycles ≤ 350cc; Professional services (CA, legal, IT, consulting); Restaurants; Telecom; Banking/financial services (non-exempt); Cosmetics; Most packaged goods not in 5% |
| 40% | Luxury / Sin | Premium cars (>4000mm or >1500cc diesel); SUVs; Motorcycles > 350cc; Aerated/caffeinated beverages; Pan masala; Cigarettes, tobacco; Online gaming (real money); Casinos; Betting; Premium event tickets |
| 3% | Precious Metals | Gold, silver, jewellery, platinum |
| 0.25% | Rough Stones | Uncut/unprocessed precious and semi-precious stones |
What ships with it
6 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 · 180 lines · 174 tokens per session scan A 827a21dcf9bb
indian-gst-expert is a skill published in the GitHub repository SahilRakhaiya05/GST-expert-skills (2 stars, last pushed 3mo ago), licensed MIT. It adds 174 tokens to every session and 2,749 once invoked, about $0.0009 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
expense-review-policy
Review invoices and contracts against accounts-payable policy before human approval.
kyc-doc-parse
Parse an investor or client onboarding packet into structured KYC fields — identity, ownership, control, source of funds, and document inventory. Use as the first step of KYC screening; output feeds the rules engine.
audit-support
Support SOX 404 compliance with control testing methodology, sample selection, and documentation standards. Use when generating testing workpapers, selecting audit samples, classifying control deficiencies, or preparing for internal or external audits.
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…
regulatory-analysis
Analyzes documents and processes against FINRA, SEC, Federal Reserve, and CFPB regulatory frameworks. Identifies compliance gaps, classifies findings by severity, and recommends remediation. Use when performing compliance audits, regulatory reviews, gap analyses, or verifying policy adherence to financial regulations.
subcontractor-payment-tracker
Track subcontractor payments, lien waivers, and compliance. Manage payment schedules and documentation.