Observed arrival · 2026-10-17
Lazaretto’s on-chain agent firewall
Lazaretto screens blockchain text before an AI agent reads it, then checks the agent’s tool calls against the user’s request.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Developers building agents that read blockchain data
- Worth noticing
- A shared session ID links screening to tool-call checks, so an address found in quarantined text can affect later actions.
Field notes
The described workflow separates inspection of incoming text from approval of outgoing tool calls, then links them with a session ID. Its example uses a token name containing an instruction to approve a spender for a maximum amount; the proposed approval is refused, while the requested swap is cleared. The page says these are results from real checks, though the extract does not independently verify that claim.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue