Noir Optimisation | Agent Skills Atlas

About this skill

Cost model and optimisation reference for Noir circuits on the UltraHonk / Aztec Barretenberg stack. Use when sizing constraint budgets, deciding whether to push work into an unconstrained Brillig hint with an in-circuit verifier, comparing Field-arith vs typed u64 bit operations, reading bb gates / nargo info / noir-profiler gates output, or weighing ACIR-opcode against backend-gate regressions. Companion to noir-circuit-patterns — that skill covers SPARQL-primitive shapes; this one covers which shape wins after measurement. Always run bb gates before claiming a saving. nargo info is misleading on its own — see §1. Intuition has misfired on this codebase before (PR 37 / spike ledger bench/SPIKES.md).

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0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1

Content SHA-256: 7af23bb4d8496927e692ccd32cef48f83d78059ca3fb197e2f3781dfc06bed98

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Original listing metadata

Original name

noir-optimisation

Original description

Cost model and optimisation reference for Noir circuits on the UltraHonk / Aztec Barretenberg stack. Use when sizing constraint budgets, deciding whether to push work into an `unconstrained` Brillig hint with an in-circuit verifier, comparing Field-arith vs typed `u64` bit operations, reading `bb gates` / `nargo info` / `noir-profiler gates` output, or weighing ACIR-opcode against backend-gate regressions. Companion to `noir-circuit-patterns` — that skill covers SPARQL-primitive shapes; this one covers which shape wins after measurement. **Always run `bb gates` before claiming a saving.** `nargo info` is misleading on its own — see §1. Intuition has misfired on this codebase before (PR #37 / spike ledger `bench/SPIKES.md`).

About this listing

Category: General
Reported license: MIT
Listing language (estimated): English
Review status: Not individually reviewed
Agent compatibility: Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.