Fetch and inspect Julia Buildkite CI logs and artifacts without web sign-in, including the TTFX benchmark jobs. Use when debugging Julia CI failures, reviewing Buildkite jobs, investigating a TTFX regression, or when the Buildkite MCP is unavailable.
Get data from perf.julialang.org - CI job and build times, Nanosoldier benchmark history, PkgEval status and failure reasons of a package, TTFX, runtime benchmarks and binary size of master commits and open PRs, package downloads. Use whenever a question…
Run Clang static analysis on Julia's C/C++ runtime and codegen, and satisfy the GC-rooting checker. Use after modifying runtime/codegen .c/.cpp files under src/ (excluding headers), before opening a PR.
Run and update Julia tests after changing test files. Use when adding to or modifying any test file under test/ or stdlib/**/test/.
Develop and test Julia's Compiler.jl. Use when modifying Compiler/, debugging compiler behavior, or activating stdlib Compiler for reflection/native-codegen experiments instead of using sysimage Base.Compiler.
Develop and test JuliaSyntax and JuliaLowering in Julia's source tree. Use when modifying JuliaSyntax/ or JuliaLowering/, running package or targeted tests, or checking JuliaLowering execution.
Write and verify Julia `jldoctest` code blocks. Use whenever adding or changing a `jldoctest` block in a docstring (base/, stdlib/, Compiler/) or under doc/, and before opening a PR that touches doctests.
Modify Julia's external dependencies and JLLs — patches under deps/patches/, version bumps in deps/, and JLL updates. Use when touching deps/ or any *_jll folder, including refreshing checksums.