3 findingsStatic scanned
Runs OpenAI's Codex coding agent locally on your computer from the command line.
71.3M installs/moApache-2.0
Agent Custody Receipts
agent-custody · Agent
Agent Custody Receipts keeps a chain of custody for what an AI agent does with its tools. It issues signed receipts for tool calls, either from inside your own agent code or through an MCP gateway that applies Cedar policy, and adds each one to a Merkle transparency log. Denied calls get receipts too, and a verify command checks a receipt against the signing keys and the log. Hooks and adapters are provided for several agent frameworks.
Written by ooruby from the README of @agent-custody/receipts 0.6.18.
Not claimed by its maker. Is this yours? Prove it and answer the findings
Why it's useful
You get a signed record of what an agent tried to do with its tools, including calls that were refused.
What you could do with it
- Wrap a payment function your agent calls so every use leaves a signed receipt and a log entry.
- Put the gateway between your agent and its MCP tools to apply a Cedar policy and keep receipts for denied calls.
- Verify a receipt by hand against the issuer key, the principal key and the log with the verify command.
Written from its documentation: what it says it can do, not what our checks found.
Maintenance
Not measuredNo release date is on record for this package yet. The nightly publisher check records one as it reaches each npm package, about once every ten nights.
Release activity only: it says nothing about quality or safety, and a finished small package can be fine without releases. How it is measured
What this does not cover
- Everything. Treat it as you would software from anywhere else.
Receipt history: every signed receipt for every version of this listing, and what changed between them.
In its maker's words
Chain of custody for AI agents: signed, independently verifiable receipts for tool calls. MCP gateway + Cedar policy + Merkle transparency log
Compare with
Compare all 4How far this has been checked
Static scanned
- What it establishes
- Its published package, or for a hosted server its source repository at a recorded commit, was read file by file, without running it, by every check in our current scan.
- What it does not
- How it behaves when it runs, or anything the scan does not read yet: several rubric checks, the repository's history, and compiled code in folders named dist or build. For a hosted server, that the endpoint runs the code that was read. The ooruby Index sets out exactly what was read.
- Exactly what was read
- Version 0.6.18, the file with digest sha512-xuLkbbuQkhUMIJPAXE7HbZURrgms3KHi1TXee2MivTv/+uNDFEJ6uDVB22qYwu2T/D4dlZ9xkKk2FlkMRUw5aA==, as the registry publishes it. A published version cannot be replaced, so this names the same bytes for anyone who checks.
- Authentication
- Runs locally. No hosted endpoint is listed for this package. You run it on your own machine, so there is no endpoint of ours to authenticate against.
Adding it
Run it with:
npx -y @agent-custody/receipts@0.6.18Pinned to 0.6.18, which is the version the findings above were found in. Drop the version to take whatever is newest, and the report on this page stops describing what you installed.
Where this came from
- Registry
- npm
- Package
- @agent-custody/receipts
- Version read
- 0.6.18
- Resolved
- 2026-10-10
No build provenance published. The repository above is the one the publisher declared, and nothing links it to the package you would install. That is not a mark against this listing, since most packages are published this way, but it is a check nobody can run.
The badge, if this is your listing
It renders the current rung (static scanned) and links back here, where what that does and does not establish is one click away. It updates itself as the evidence deepens.
[](https://ooruby.com/market/agent-custody-receipts)About this listing
- Kind
- Agent
- Category
- Developer tools
- Pricing
- Free
- Sandbox
- No
- Hosted
- No
- Updated
- 2026-10-06
Similar agents
All agentsVerification records what our published tests found on a specific version at a specific date. It is not a warranty, and it does not certify that software is free of defects.