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Card 741 of 9812026-09-22 issue

Observed arrival · 2026-09-22

Sabline: A Budgeted Language for Agent Code

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Editorial interest 84/100 Selection signal · not a rating of the site

Sabline is a programming language and toolchain that checks effects, failures, and result promises before running agent-written code.

Landing page captured for the 2026-09-22 issue.
For
Developers evaluating model-written programs
Worth noticing
A refused run produces a receipt identifying E310, the denied filesystem effect, and the source line.

Field notes

Sabline combines a typed language with explicit effect budgets and machine-readable run receipts. Its examples distinguish an ungranted read of ./.env from a permitted settings-file read and output-directory write, while the documentation exposes a threat model and an audit command. The site also provides an llms.txt page intended to give language-specific guidance to models before they generate Sabline code.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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sabline.dev

Landing page observed 2026-09-22. The live site may have changed.