402signalhq/402signal
by Various
Pre-flight check and signed evidence for agent payments (x402 and MPP): confirm the endpoint is live and the price and recipient match before your agent pays.
MCP
402signalhq/402signal
Added 16 Sept 2026
Overview
Pre-flight check for agent payments using x402 and MPP. It verifies that the payment endpoint is live and that the price and recipient match expectations before an agent authorizes payment. It produces signed evidence of the check.
Best for
Best for
Developers building agents that pay via x402 or MPP and need pre-payment verification.
Use cases
- Verify endpoint liveness before agent payment
- Confirm price and recipient match before paying
- Generate signed evidence for payment audits
How to use
Install
npm install @402signal/route-guard@0.7.6 && npm audit signaturesNotes
1 stars on GitHub. Last updated 2026-09-15. Licensed MIT.
Pros
- Focused on a specific payment pre-flight need
- Open source and simple to inspect
- Provides signed evidence for accountability
Cons
- Very early stage with minimal adoption (1 star)
- Python only, no other language bindings
- Limited documentation or community support
Pairs with
Other entries in the index that connect to this one. Click through to see the chain.
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