Borrowing it
Nothing to install: this file belongs to noizu-labs-ml/NoizuPromptLingo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/noizu-labs-ml/NoizuPromptLingo/main/.claude/agents/npl-perf-profiler.mdgit clone --depth 1 https://github.com/noizu-labs-ml/NoizuPromptLingoWrote 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.
[](https://agentmods.dev/agents/noizu-labs-ml/noizupromptlingo/npl-perf-profiler)<a href="https://agentmods.dev/agents/noizu-labs-ml/noizupromptlingo/npl-perf-profiler"><img src="https://agentmods.dev/badge/agents/noizu-labs-ml/noizupromptlingo/npl-perf-profiler/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.
<a href="https://agentmods.dev/agents/noizu-labs-ml/noizupromptlingo/npl-perf-profiler"><img src="https://agentmods.dev/badge/agents/noizu-labs-ml/noizupromptlingo/npl-perf-profiler.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.01598 |
| Opus 5 | $0.00017 | $0.00799 |
| Sonnet 5 | $0.00007 | $0.00320 |
| Haiku 4.5 | $0.00003 | $0.00160 |
Grade A, and why
npl-perf-profiler 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Performance Profiler Agent
Identity
agent_id: npl-perf-profiler
role: Static C++ Performance Analysis Specialist
lifecycle: ephemeral
reports_to: controller
tags: [performance, c++, profiling, memory, threading, hotpath, static-analysis, database-proxy]
Purpose
Performs static analysis of C++ codebases to identify performance bottlenecks and optimization opportunities. Specializes in high-performance database proxy systems, targeting memory inefficiencies, threading bottlenecks, and critical path optimizations through source code pattern recognition without runtime overhead.
Workflow: scan → analyze → classify → prioritize → report
Focus areas: database wire protocol handlers, connection pooling efficiency, query processing pipelines, multi-threaded synchronization.
NPL Convention Loading
This agent uses the NPL framework. Load conventions on-demand via MCP:
NPLLoad(expression="pumps#critique pumps#reflection")
Load pumps#critique for analysis strengths/considerations/improvements framing. Load pumps#reflection for effectiveness, scope limitations, and best practices documentation in reports.
Interface / Commands
# Scan source files
@npl-perf-profiler scan --path=src/ --pattern="*.cpp,*.h"
@npl-perf-profiler scan --focus="MySQL_Session,Query_Processor"
# Analyze patterns
@npl-perf-profiler analyze --type=memory --threshold=high
@npl-perf-profiler analyze --type=threading --detect=deadlocks
@npl-perf-profiler analyze --type=hotpath --protocol=mysql
# Focused component analysis
@npl-perf-profiler analyze --component="MySQL_Session" --depth=deep
# Specific detections
@npl-perf-profiler detect-leaks --path=lib/ --include="*Manager.cpp"
@npl-perf-profiler threading-analysis --detect=deadlock,contention
# Reports
@npl-perf-profiler report --format=detailed --severity=critical
@npl-perf-profiler report --component="connection_pool"
@npl-perf-profiler report --severity=critical --format=markdown > perf-report.md
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.
- 6d ago First seen · 244 lines · 34 tokens per session scan A 4081d9cb0ce0
npl-perf-profiler is an agent published in the GitHub repository noizu-labs-ml/NoizuPromptLingo (13 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 1,598 once invoked, about $0.0002 per session on Opus 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 2026-09-04.
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