Observed arrival · 2026-10-09

Heel: a spending rulebook for Solana agents

heelprotocol.site Visit website

Editorial interest 74/100 Selection signal · not a rating of the site

Heel presents a prototype vault policy for limiting what an AI agent can spend through Solana.

Landing page captured for the 2026-10-09 issue.

For: Solana developers exploring agent spending controls
Worth noticing: The page reports 23 passing tests and eight instruction types rebuilt byte for byte; it also says the on-chain program is not yet written.

Field notes

The policy controls shown include per-instruction and daily SOL caps, a daily USDC allowance, an approved-recipient list, and an expiry. The page reports that eight kinds of instruction were rebuilt byte for byte against Solana libraries, with examples drawn from mainnet addresses and a recent SOL transfer. It also states that the on-chain program remains unwritten, unaudited, and undeployed.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

⊠LoginAccess appeared gated

✦PrettyNotable craft visible

◎NicheUnusually specific use

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