{"id":"bd641778-c565-44a4-b65a-f2a9dfcbbaca","shortId":"nkbxjk","kind":"skill","title":"billing-automation","tagline":"Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.","description":"# Billing Automation\n\nMaster automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.\n\n## Use this skill when\n\n- Implementing SaaS subscription billing\n- Automating invoice generation and delivery\n- Managing failed payment recovery (dunning)\n- Calculating prorated charges for plan changes\n- Handling sales tax, VAT, and GST\n- Processing usage-based billing\n- Managing billing cycles and renewals\n\n## Do not use this skill when\n\n- You only need a one-off invoice or manual billing\n- The task is unrelated to billing or subscriptions\n- You cannot change pricing, plans, or billing flows\n\n## Instructions\n\n- Define plans, pricing, billing intervals, and proration rules.\n- Map subscription lifecycle states and renewal/cancellation behavior.\n- Implement invoicing, payments, retries, and dunning workflows.\n- Model taxes and compliance requirements per region.\n- Validate with sandbox payments and reconcile ledger outputs.\n- If detailed templates are required, open `resources/implementation-playbook.md`.\n\n## Safety\n\n- Do not charge real customers in testing environments.\n- Verify tax handling and compliance obligations before production rollout.\n\n## Resources\n\n- `resources/implementation-playbook.md` for detailed patterns, checklists, and examples.\n\n## Limitations\n- Use this skill only when the task clearly matches the scope described above.\n- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.\n- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.","tags":["billing","automation","antigravity","awesome","skills","sickn33","agent-skills","agentic-skills","ai-agent-skills","ai-agents","ai-coding","ai-workflows"],"capabilities":["skill","source-sickn33","skill-billing-automation","topic-agent-skills","topic-agentic-skills","topic-ai-agent-skills","topic-ai-agents","topic-ai-coding","topic-ai-workflows","topic-antigravity","topic-antigravity-skills","topic-claude-code","topic-claude-code-skills","topic-codex-cli","topic-codex-skills"],"categories":["antigravity-awesome-skills"],"synonyms":[],"warnings":[],"endpointUrl":"https://skills.sh/sickn33/antigravity-awesome-skills/billing-automation","protocol":"skill","transport":"skills-sh","auth":{"type":"none","details":{"cli":"npx skills add sickn33/antigravity-awesome-skills","source_repo":"https://github.com/sickn33/antigravity-awesome-skills","install_from":"skills.sh"}},"qualityScore":"0.700","qualityRationale":"deterministic score 0.70 from registry signals: · indexed on github topic:agent-skills · 34928 github stars · SKILL.md body (1,642 chars)","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"deterministic:skill-github:v1","enrichmentVersion":1,"enrichedAt":"2026-04-24T18:50:36.277Z","embedding":null,"createdAt":"2026-04-18T21:33:33.997Z","updatedAt":"2026-04-24T18:50:36.277Z","lastSeenAt":"2026-04-24T18:50:36.277Z","tsv":"'ask':213 'autom':3,5,20,22,44 'base':69 'behavior':124 'bill':2,6,10,19,23,27,43,70,72,92,98,107,113 'billing-autom':1 'boundari':221 'calcul':18,35,54 'cannot':102 'chang':59,103 'charg':56,157 'checklist':177 'clarif':215 'clear':188 'complianc':135,167 'criteria':224 'custom':159 'cycl':73 'defin':110 'deliveri':48 'describ':192 'detail':148,175 'dun':13,30,53,130 'environ':162,204 'environment-specif':203 'exampl':179 'expert':209 'fail':50 'flow':108 'generat':12,29,46 'gst':65 'handl':60,165 'implement':40,125 'includ':8,25 'input':218 'instruct':109 'interv':114 'invoic':11,28,45,89,126 'ledger':145 'lifecycl':120 'limit':180 'manag':14,31,49,71 'manual':91 'map':118 'master':4,21 'match':189 'miss':226 'model':132 'need':84 'oblig':168 'one':87 'one-off':86 'open':152 'output':146,198 'pattern':176 'payment':51,127,142 'per':137 'permiss':219 'plan':58,105,111 'price':104,112 'process':66 'product':170 'prorat':15,32,55,116 'real':158 'reconcil':144 'recoveri':52 'recur':9,26 'region':138 'renew':75 'renewal/cancellation':123 'requir':136,151,217 'resourc':172 'resources/implementation-playbook.md':153,173 'retri':128 'review':210 'rollout':171 'rule':117 'saa':41 'safeti':154,220 'sale':61 'sandbox':141 'scope':191 'skill':38,80,183 'skill-billing-automation' 'source-sickn33' 'specif':205 'state':121 'stop':211 'subscript':42,100,119 'substitut':201 'success':223 'system':7,24 'task':94,187 'tax':17,34,62,133,164 'templat':149 'test':161,207 'topic-agent-skills' 'topic-agentic-skills' 'topic-ai-agent-skills' 'topic-ai-agents' 'topic-ai-coding' 'topic-ai-workflows' 'topic-antigravity' 'topic-antigravity-skills' 'topic-claude-code' 'topic-claude-code-skills' 'topic-codex-cli' 'topic-codex-skills' 'treat':196 'unrel':96 'usag':68 'usage-bas':67 'use':36,78,181 'valid':139,206 'vat':63 'verifi':163 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