ops-codegraph-tool: Skill for Claude Code

.claude/skills/bench-check/SKILL.md

bench-check is a skill for Claude Code from optave/ops-codegraph-tool. It costs 25 tokens per session (2,955 once invoked), scanned A, original, Apache-2.0.

A performance regression check. It runs benchmark tests, which measure things such as build speed or query latency, and compares the results with a saved baseline.

In plain words
What is it for?
Use it to save a benchmark baseline, compare current results, set a regression threshold, and update the baseline when appropriate.
Why use it?
It helps detect slowdowns that may otherwise go unnoticed between releases or code changes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is optave/ops-codegraph-tool's own configuration. It tells Claude Code how to work on ops-codegraph-tool itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ops-codegraph-tool configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is output=$(timeout 300 node scripts/benchmark.js 2>&1).

Reuse

Borrowing it

Nothing to install: this file belongs to optave/ops-codegraph-tool. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/optave/ops-codegraph-tool/main/.claude/skills/bench-check/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/optave/ops-codegraph-tool

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bench-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/optave/ops-codegraph-tool/bench-check/github.svg)](https://agentmods.dev/skills/optave/ops-codegraph-tool/bench-check)
Your own site
<a href="https://agentmods.dev/skills/optave/ops-codegraph-tool/bench-check"><img src="https://agentmods.dev/badge/skills/optave/ops-codegraph-tool/bench-check/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bench-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/optave/ops-codegraph-tool/bench-check"><img src="https://agentmods.dev/badge/skills/optave/ops-codegraph-tool/bench-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,955 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00025 $0.02955
Opus 5.5 $0.00010 $0.01182
Sonnet 5.5 $0.00005 $0.00591
Haiku 4.5 $0.00003 $0.00296

Measured 2mo ago against content hash 8b3ffe67208e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bench-check scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/bench-check/SKILL.md · 298 lines

How it starts

The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/bench-check — Performance Regression Check

Run the project's benchmark suite, compare results against a saved baseline, flag regressions beyond a threshold, and optionally update the baseline. Prevents silent performance degradation between releases.

Arguments

  • $ARGUMENTS may contain:
    • --save-baseline — run benchmarks and save as the new baseline (no comparison)
    • --compare-only — compare against baseline without updating it
    • --threshold N — regression threshold percentage (default: 15%)
    • No arguments — compare against baseline, then update it if no regressions

Phase 0 — Pre-flight

  1. Confirm we're in the codegraph repo root
  2. Check that benchmark scripts exist:
    • scripts/benchmark.js (build speed, query latency)
    • scripts/incremental-benchmark.js (incremental build tiers)
    • scripts/query-benchmark.js (query depth scaling)
    • scripts/embedding-benchmark.js (search recall) — optional, skip if embedding deps missing
  3. Parse $ARGUMENTS:
    • SAVE_ONLY=true if --save-baseline
    • COMPARE_ONLY=true if --compare-only
    • THRESHOLD=N from --threshold N (default: 15)
  4. Check for existing baseline at generated/bench-check/baseline.json
    • If missing and not --save-baseline: warn that this will be an initial baseline run

Phase 1 — Run Benchmarks

Run each benchmark script and collect results. Each script outputs JSON to stdout.

1a. Build & Query Benchmark

output=$(timeout 300 node scripts/benchmark.js 2>&1)
exit_code=$?

If exit_code is 124: record "timeout" for this suite and skip to the next suite. Else if exit_code is non-zero: record "error: $output" for this suite and skip to the next suite.

Extract:

  • buildTime (ms) — per engine (native, WASM)
  • queryTime (ms) — per query type
  • nodeCount, edgeCount — graph size

1b. Incremental Benchmark

output=$(timeout 300 node scripts/incremental-benchmark.js 2>&1)
exit_code=$?

If exit_code is 124: record "timeout" for this suite and skip to the next suite. Else if exit_code is non-zero: record "error: $output" for this suite and skip to the next suite.

Read the full file on GitHub · 298 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 298 lines · 25 tokens per session scan A 8b3ffe67208e

Subscribe to this mod's changes

bench-check is a skill published in the GitHub repository optave/ops-codegraph-tool (99 stars, last pushed 5d ago), licensed Apache-2.0. It adds 25 tokens to every session and 2,955 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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