mirror of
https://github.com/bdbrown4/peltier.io.git
synced 2026-11-07 10:58:28 +00:00
benbrownandClaude Fable 5
477c5472dd
The SKILL.md Agent Skills standard (agentskills.io) is now read natively by Codex, Copilot, VS Code, Cursor, Gemini CLI, opencode, Goose, Amp, Zed, Factory, and ZeroClaw — so the portable move is not per-harness adapter files (forked content that drifts) but one canonical skill placed where each harness actually looks. - Spec-compliant frontmatter: license, compatibility (the Linux-only measurement story, stated up front), version/author/tags top-level (ZeroClaw's runtime reads those; the spec ignores unknown fields). reference/ renamed to references/ per the spec's conventional layout. - .agents/skills/peltier/ mirror: the cross-tool convergence path (Codex, Zed, Cursor, Gemini CLI, Copilot, opencode, Goose, Amp). Byte-identical to the .claude canonical, enforced by CI — drift between the two copies is a red build, not a footnote. - AGENTS.md at the repo root for the ~20 harnesses that read it (Claude Code does not; CLAUDE.md remains its file). Deliberately thin: it points at CLAUDE.md and the skill instead of restating rules. - scripts/install-skill.sh: stamps a consumer repo at both discovery paths (--layout claude|agents|both), or emits a script-less --zeroclaw-variant. ZeroClaw's skill security policy blocks script files by default (skills.allow_scripts off) — its audit rejected the full skill and passes the variant, verified against the real zeroclaw binary. The variant loses nothing: preflight.sh still exists exactly once, in the peltier checkout the skill already requires, and SKILL.md now documents running it from there. Re-implementing preflight inline is named as a refusal condition. - CI (skill-preflight): frontmatter upgraded to a full Agent Skills spec conformance check on BOTH copies (name rules, dir match, description and body limits, metadata string-map), plus mirror equality and a functional installer test (both layouts identical to canonical, variant carries no scripts/, nonexistent target refused). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
135 lines
6.5 KiB
Markdown
135 lines
6.5 KiB
Markdown
# peltier.io
|
||
|
||
> Spot cooling for hot paths. A profile-guided optimization agent that
|
||
> only ships wins it can prove.
|
||
|
||
peltier.io profiles real binaries and services, isolates hot paths, proposes
|
||
optimizations, and accepts a change **only** when two independent bars are
|
||
cleared: **behavioral equivalence** (upstream tests + byte-identical golden
|
||
replay + differential fuzzing + sanitizers) and **statistical significance**
|
||
(the speedup's bootstrap 95% CI lower bound clears a threshold on
|
||
calibrated hardware). A change without both is discarded and logged.
|
||
|
||
Consultants sell surveys; compilers sell flags. Peltier sells **verified
|
||
deltas with the methodology attached** — a stopwatch on pinned hardware, a
|
||
proof of equivalence, and an ROI figure whose confidence interval survives
|
||
hostile review.
|
||
|
||
📖 **Full documentation: the [peltier.io book](https://bdbrown4.github.io/peltier.io/)**
|
||
· Design spec: [SPEC.md](SPEC.md) · Charter: [CLAUDE.md](CLAUDE.md)
|
||
|
||
## Verified results
|
||
|
||
Every number carries its 95% CI and its workload, and every one survived the
|
||
gates above. Across **five phases and 34 ledger rows, zero shipped false
|
||
accepts** — including two pipeline over-accepts the audit caught before
|
||
anything shipped, each becoming a permanent new gate.
|
||
|
||
| Target | Win | Verified |
|
||
|---|---|---|
|
||
| tokei (Rust) — LTO (class 1) | +10.4% | CI [+8.5%, +12.0%] |
|
||
| tokei — three class-5 algorithmic wins | +10.7% / +3.7% / +9.9% | each CI-significant |
|
||
| cJSON (C) — number-handling rewrite (class 5) | +8.85% | CI [+7.5%, +10.0%] |
|
||
| cJSON HTTP service — p50 latency under replay | +6.2% | CI [+5.8%, +7.2%] |
|
||
| comrak (Rust) — mimalloc (class 2) | +4.6% | CI [+3.3%, +5.8%], [human-ruled](results/rulings/phase0-comrak-002.md) |
|
||
|
||
## Layout
|
||
|
||
```
|
||
crates/ Trust layer — agent has NO write access (SPEC §10)
|
||
bench-runner/ Interleaved A/B, bootstrap CIs, A/A calibration, service mode
|
||
diff-test/ Equivalence gates, corpus hash-pinning, per-target spec
|
||
ledger/ Append-only SQLite attempt ledger (mutation-refusing triggers)
|
||
report/ ROI: speedup CI → cores → dollars, methodology inline
|
||
verdict/ The pipeline in one command: gates → bench → ledger row
|
||
harnessd/ The one door the agent talks through (7 JSON ops)
|
||
agent/ Untrusted proposer (Claude Agent SDK, Python)
|
||
playbook/ Optimization classes 1–7, tried strictly cheapest-first
|
||
config/ accept.toml (thresholds), pricing.toml (ROI inputs)
|
||
targets/ Vendored OSS targets — the only agent-writable path
|
||
corpora/ Hash-pinned golden-replay inputs (read-only to agent)
|
||
results/ Calibration evidence, case studies, generated ROI reports
|
||
docs/ The mdBook site (deployed to GitHub Pages)
|
||
```
|
||
|
||
## Quick start
|
||
|
||
```sh
|
||
just build / test / lint # trust-layer workspace
|
||
just aa # A/A self-test — must yield a null verdict
|
||
just gates <target> # corpus pin + upstream tests + golden replay
|
||
# (fuzz needs a baseline — it runs in `just verdict`)
|
||
just verdict <t> <bin> ... # gates + fuzz + sanitizers + bench vs pristine baseline
|
||
just report <run-id> # ROI report from a ledger row
|
||
just isolation-check # 19 OS-boundary checks (both modes)
|
||
```
|
||
|
||
The pipeline is **Linux/POSIX-only** at runtime (Unix sockets, `setsid`,
|
||
sh-based gates). Windows builds the workspace and runs the portable unit
|
||
tests, but cannot run the pipeline.
|
||
|
||
Full command reference and reproduction steps:
|
||
[Reproduce it yourself](https://bdbrown4.github.io/peltier.io/reproduce.html).
|
||
|
||
## Use it on your own code — from any agent harness
|
||
|
||
The trust layer is not specific to these targets — it will judge any two shell
|
||
commands. It ships as an **[Agent Skill](https://agentskills.io)** (the open
|
||
SKILL.md standard), which Claude Code, OpenAI Codex, GitHub Copilot, VS Code,
|
||
Cursor, Gemini CLI, opencode, Goose, Amp, Zed, and ZeroClaw all load natively.
|
||
One installer stamps it into your repo at both discovery paths:
|
||
|
||
```sh
|
||
# from your repo, with a peltier checkout at /path/to/peltier.io
|
||
sh /path/to/peltier.io/scripts/install-skill.sh .
|
||
export PELTIER_HOME=/path/to/peltier.io # the skill drives bench-runner from here
|
||
```
|
||
|
||
That writes `.claude/skills/peltier/` (Claude Code; also read by Copilot,
|
||
VS Code, opencode, Amp) and `.agents/skills/peltier/` (the cross-tool path:
|
||
Codex, Zed, Cursor, Gemini CLI, Goose, and others). This repo carries both,
|
||
CI-enforced byte-identical, so the two copies cannot drift.
|
||
|
||
**ZeroClaw** blocks script files inside skills by default, so it gets a
|
||
script-less variant (preflight runs from your peltier checkout instead —
|
||
same one copy of the script):
|
||
|
||
```sh
|
||
sh /path/to/peltier.io/scripts/install-skill.sh --zeroclaw-variant /tmp/peltier-skill
|
||
zeroclaw skills install /tmp/peltier-skill
|
||
```
|
||
|
||
Then ask your agent to verify a speedup. The skill enforces the order that
|
||
makes a performance claim mean something: **equivalence before timing** (a
|
||
faster program that computes something different is a bug, not an
|
||
optimization) → **A/A calibration** (a host that "finds" a speedup between a
|
||
binary and itself cannot measure yours) → **interleaved A/B with a bootstrap
|
||
CI** → a verdict decided by the CI *lower bound*, never the median.
|
||
|
||
It drives the real `bench-runner` binary and **refuses rather than degrade**:
|
||
on an unsupported host, or with no trust layer reachable, it stops and says so
|
||
instead of falling back to a hand-rolled timing loop. A second copy of the
|
||
statistics is a second thing that can lie.
|
||
|
||
## How it stays honest
|
||
|
||
- The agent speaks to the trust layer through **seven read-only-plus-one-
|
||
write JSON operations**; it has no shell, cannot write outside a target
|
||
workspace, and cannot touch the ledger or thresholds.
|
||
- The **baseline is rebuilt from a pristine checkout** every session — a
|
||
patch never becomes its own comparison.
|
||
- The **ledger is append-only** (SQLite triggers refuse UPDATE/DELETE);
|
||
accepted rows are written only by the `verdict` binary after the gates.
|
||
- The agent process runs under **OS-level isolation** (read-only mount
|
||
namespace or an unprivileged uid) — the boundary is filesystem
|
||
permissions, not a prompt.
|
||
|
||
See [the case studies](https://bdbrown4.github.io/peltier.io/case-studies/overview.html)
|
||
— especially [the caught false-accept](https://bdbrown4.github.io/peltier.io/case-studies/comrak-false-accept.html),
|
||
where the pipeline over-accepted a leaking patch and the audit overturned
|
||
it before it shipped.
|
||
|
||
## License
|
||
|
||
GPL-3.0-or-later — see [LICENSE](LICENSE).
|