Check a receipt you received. In your browser, with an example or your own file.
proofbundle.dev/verifyVerify in your browserOpen source · Verifiable offline
Got an AI result?
Verify the evidence.
A thought experiment
What if someone changes your order?
A restaurant confirms your delivery order and signs the confirmation. The delivery service passes it on to you. Choose a case. This display explains the principle and does not verify anything.
Fictional sampleOrder 1042 · 2 pizzas · €24.50 · key restaurant 7f3a…c2e1
Three ways in
What do you want to do?
Use it as a plugin in Claude Code or Codex, or add it to Python, pytest and CI.
/proofbundle:verifyTo the pluginsSign a result yourself and check it. A test key is not a verified identity.
pip install proofbundleTry the CLIHow a receipt works
Integrity is verifiable
Truth is a separate question
Issue
Result and context, signed into one receipt.
Verifiable
Which key signed it.
Stays open
Who holds that key and whether you can trust them.
Share
Share one file, no access to the source system needed.
Verifiable
That nothing changed after signing.
Stays open
Whether the content is true and complete.
Verify
Locally, offline, no account needed.
Verifiable
Whether the proofs pass the chosen checks.
Stays open
Whether anything is missing or the agent did good work.
What gets checked depends on format, proofs and policy. Read all non-claims
The plugins
Where your
agents work
One core, right inside Claude Code and Codex.
Claude Code
Released · 0.4.0
Verify receipts and document reviews when you call it.
View the pluginCodex
Released · 0.4.0
The same flow in Codex. The automatic gate is experimental.
View the pluginVerify receipts
Check a receipt's signature and proofs.
/proofbundle:verifyDocument reviews
First verify the receipt, then separate verified facts from issuer claims.
/proofbundle:review-receiptSign your own
Selected data, only on request signed.
/proofbundle:emitVerifying is released, signing and the gate are experimental.
Try the verifier today
On the command line
Your own check
Python 3.10 or later, three commands. Installing needs a network, the check itself does not.
Shell · Commands to run
Install
python -m pip install proofbundle==6.5.0Download a sample
curl -fsSLo receipt.json https://raw.githubusercontent.com/b7n0de/proofbundle/v6.5.0/examples/example_bundle.jsonVerify locally
proofbundle verify receipt.jsonCLI v6.5.0, sample from tag v6.5.0 · Python package
In your workflow
For work that
needs a traceable record
Share evaluations
Metrics with context, signed.
Document decisions
Tie a decision to evidence. Whether it was right is a separate check.
Review agent work
Reviews and outcomes as the issuer's declaration.
A receipt can support an approval, only a tested integration can stop an agent. RequirementsHave it set up by work36
in-totoSCITTSD-JWTDocumented mappings, not adoption by those projects.
