VoucherGuard

AI agents can spend. We verify what they sign.
Open-source payment voucher verification on Solana.
Built for agentic payments.

6haciZiuNuUvBvUnJa6SFB7bsxnpoW3B

[VoucherGuard @VoucherGuard]

Welcome to https://t.co/B96YCviMqM

VoucherGuard is an open-source verification toolkit for Solana payment channels. Verify signed vouchers, spending limits, expiration, and channel state. Locally, without a backend.

Signed intent. Independent verification.
Verify what your AI agents sign.

[VoucherGuard @VoucherGuard]

Introducing VoucherGuard 0.4.0.

One Solscan link. A clearer picture.

Transaction X-Ray, Wallet Impact, Permission Map and Failure Decoder. All in one workspace.

Here's how it works ↓
https://t.co/B96YCviMqM

[VoucherGuard @VoucherGuard]

Introducing VoucherGuard 0.4.0.

One Solscan link. A clearer picture.

Transaction X-Ray, Wallet Impact, Permission Map and Failure Decoder. All in one workspace.

Here's how it works ↓
https://t.co/B96YCviMqM

[VoucherGuard @VoucherGuard]

A new homepage for VoucherGuard.

We've reorganized the site around one Solscan link and three tools:

Transaction X-Ray. Wallet Impact. Failure Decoder.

Free to explore, no wallet required. Pro adds personal rules and evidence exports.

CA: 6haciZiuNuUvBvUnJa6SFB7bsxnpoW3Bz4R2cmpRpump

[VoucherGuard @VoucherGuard]

A new homepage for VoucherGuard.

We've reorganized the site around one Solscan link and three tools:

Transaction X-Ray. Wallet Impact. Failure Decoder.

Free to explore, no wallet required. Pro adds personal rules and evidence exports.

CA: 6haciZiuNuUvBvUnJa6SFB7bsxnpoW3Bz4R2cmpRpump

[VoucherGuard @VoucherGuard]

Wallet Impact is live.

Select an account to see recorded SOL and token balances before and after a transaction. Free, no wallet needed.

Pro adds saved SOL-decrease limits, token alerts and a personal mint allowlist.

https://t.co/bxqe4upQVB

[VoucherGuard @VoucherGuard]

Not every transaction error has a known explanation.

Transaction X-Ray explains recognized Solana runtime errors.

For custom program errors, it shows the code and recorded logs without guessing the cause.

Unknown stays unknown.

[VoucherGuard @VoucherGuard]

Not every transaction error has a known explanation.

Transaction X-Ray explains recognized Solana runtime errors.

For custom program errors, it shows the code and recorded logs without guessing the cause.

Unknown stays unknown.

[VoucherGuard @VoucherGuard]

Transaction X-Ray now has account focus.

Select an address from a Solana transaction. Replay only the steps that directly reference it.

See its role in each operation and filter the recorded balance changes.

CA: 6haciZiuNuUvBvUnJa6SFB7bsxnpoW3Bz4R2cmpRpump

[VoucherGuard @VoucherGuard]

A failed transaction still has a story.

Transaction X-Ray shows which operations were attempted, even when the transaction failed on-chain.

An attempted token approval isn't an active permission. An instruction isn't proof of execution.

The distinction matters.

CA: 6haciZiuNuUvBvUnJa6SFB7bsxnpoW3Bz4R2cmpRpump

[VoucherGuard @VoucherGuard]

$ VG — DEX Screener update!

We've paid for Enhanced Token Info.

Our project details, website, and official links are being added to the token profile.

https://t.co/3uVHvPt3IH

[VoucherGuard @VoucherGuard]

$ VG — DEX Screener update!

We've paid for Enhanced Token Info.

Our project details, website, and official links are being added to the token profile.

https://t.co/3uVHvPt3IH

[VoucherGuard @VoucherGuard]

VoucherGuard v0.3.0 — Transaction X-Ray.

Paste a Solscan link. Press Play.

Step through recorded transfers and selected permissions. Switch between Money and Permissions, pause, or scrub the timeline.

Free, no wallet required. Pro highlights steps using your saved rules.

https://t.co/bxqe4upQVB

[VoucherGuard @VoucherGuard]

VoucherGuard v0.3.0 — Transaction X-Ray.

Paste a Solscan link. Press Play.

Step through recorded transfers and selected permissions. Switch between Money and Permissions, pause, or scrub the timeline.

Free, no wallet required. Pro highlights steps using your saved rules.

https://t.co/bxqe4upQVB

[VoucherGuard @VoucherGuard]

Your transaction rules. Every review.

VoucherGuard Pro now lets you set your preferences once and apply them automatically to every new transaction review.

Set fee limits, flag spending delegations and authority changes, or define your own program allowlist.

Saved locally. No extra RPC calls. No uploads.
https://t.co/5FZI2LdZdA

[VoucherGuard @VoucherGuard]

Your transaction rules. Every review.

VoucherGuard Pro now lets you set your preferences once and apply them automatically to every new transaction review.

Set fee limits, flag spending delegations and authority changes, or define your own program allowlist.

Saved locally. No extra RPC calls. No uploads.
https://t.co/5FZI2LdZdA

[VoucherGuard @VoucherGuard]

The transaction succeeded. But what actually changed?

One Solscan link reveals the recorded fees, balance changes, and a spending delegation that a success status alone doesn't explain.

A closer look at transaction evidence with VoucherGuard Pro.

https://t.co/hsay0lAKkP

[VoucherGuard @VoucherGuard]

VoucherGuard v0.2.0.

Pro now saves up to 20 transaction reviews per wallet in your browser.

Compare two saved reviews. Export the evidence as a PNG card or full JSON.

Saving, comparing and exporting require no extra RPC calls or uploads.

[VoucherGuard @VoucherGuard]

How VoucherGuard Pro works.

From a Solscan link to a complete transaction review.

A quick walkthrough of the workflow, using illustrative test data.

See it in action ↓

[VoucherGuard @VoucherGuard]

Introducing VoucherGuard Pro!

Paste one Solscan transaction link to inspect SOL and token balance changes, fees, spending delegations, and account authority changes, including recorded inner instructions.

See what happened, what needs attention, and what couldn’t be checked. Export the evidence.

Custom policies and batch verification are included.

Hold 5M $ VG on Solana and sign an access message to unlock. No payment transaction required.

https://t.co/5FZI2LdZdA