How do I install the Agent Receipt skill?

Run npx skillmds@latest add abner-machado/agent-receipt in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Agent Receipt safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Agent Receipt?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Agent Receipt free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Agent Receipt?

Abner-Machado (@abner-machado) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Agent Receipt by abner-machado — Agent Skill

Name: Agent Receipt
Author: Abner-Machado

Agent Receipt

Use quando um agente de IA executar uma acao, chamar ferramenta, editar arquivo ou gastar credito e for necessario registrar prova encadeada do que aconteceu. Nao use para fins que nao sejam rastreabilidade de acoes de agentes.

Abner-Machado 88f9f8e 8 files · 16.0 KB Updated Sep 17, 2026

File contents

agent-receipt

Recibo encadeado por acao de agente de IA. Cada recibo tem id, timestamp ISO, agente, ferramenta, hash sha256 da entrada, politica aplicada, resultado, custo e hash do recibo anterior, formando uma corrente verificavel com node:crypto.

Como usar

Adicionar um recibo

node cli.mjs append receipts.jsonl \
  --agent "Claude" \
  --tool "file_edit" \
  --input "conteudo alterado" \
  --policy "pode escrever" \
  --status ok \
  --cost 0.002

Verificar corrente

node cli.mjs verify receipts.jsonl

Ver resumo

node cli.mjs show receipts.jsonl

Formato do recibo

Cada linha do arquivo JSONL e um recibo com:

Campo	Tipo	Descricao
id	number	Identificador sequencial
timestamp	string	ISO 8601
agent	string	Nome do agente
tool	string	Ferramenta chamada
inputHash	string	SHA-256 da entrada
policy	string	Politica que autorizou
status	string	ok ou erro
cost	number	Custo estimado
prevHash	string\|null	Hash do recibo anterior
receiptHash	string	SHA-256 deste recibo

Arquitetura

lib.mjs — funcoes puras (buildReceipt, verifyChain, summarize), sem I/O
cli.mjs — interface de comando com append, verify, show
test.mjs — 8 testes cobrindo adulteracao, remocao, corrente valida e vazio

Frequently asked questions