What is parity-audit?

A comparison method for deciding which differences in a migrated implementation are required for matching the original behavior.

Use it when auditing migrations involving server and client roles, network transport, language-model use, tools, and credentials.

It separates necessary compatibility work from optional convenience layers, making extra complexity easier to explain and review.

How alonf/MCPPythonDemo configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to alonf/MCPPythonDemo. 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/alonf/MCPPythonDemo/master/.squad/skills/parity-audit/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/alonf/MCPPythonDemo

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/alonf/mcppythondemo/parity-audit/github.svg)](https://agentmods.dev/skills/alonf/mcppythondemo/parity-audit)

Your own site

<a href="https://agentmods.dev/skills/alonf/mcppythondemo/parity-audit"><img src="https://agentmods.dev/badge/skills/alonf/mcppythondemo/parity-audit/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/alonf/mcppythondemo/parity-audit"><img src="https://agentmods.dev/badge/skills/alonf/mcppythondemo/parity-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 253 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00253
Opus 5.5	$0.00007	$0.00101
Sonnet 5.5	$0.00003	$0.00051
Haiku 4.5	$0.00002	$0.00025

Measured 2mo ago against content hash 86c4b442c5e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

parity-audit 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.

.squad/skills/parity-audit/SKILL.md · 32 lines

What it actually says

Parity Audit

Use when

A migrated implementation looks "more complex" than the reference
You need to tell whether that complexity is required for behavioral parity or just convenience/portability work

Method

Inspect the reference branch's runnable entrypoints, not just summaries.
Identify the behavioral contract:
- transport
- server/client split
- LLM involvement
- tool exposure/orchestration
- credential model
Mark everything in the target implementation as either:
- parity-critical
- ergonomic/portability add-on
Explain any extra complexity in human terms: "hidden by the original SDK" vs "new convenience layer".

Example from this repo

Parity-critical: Python tool-schema translation + tool-call loop, because C# M1 uses AsAIAgent(... tools: [.. tools]).
Extra ergonomics: .env.local, CLI overrides, env alias lookup, API-key fallback, interactive chat polish.

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.

2mo ago First seen · 32 lines · 17 tokens per session scan A 86c4b442c5e8

Subscribe to this mod's changes

parity-audit is a skill published in the GitHub repository alonf/MCPPythonDemo (0 stars, last pushed 6mo ago), licensed MIT. It adds 17 tokens to every session and 253 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 2026-08-31.

Debugging

parity-audit next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
parity-auditalonf/MCPPythonDemo	Skill	0	6mo ago	MIT	A	17	Claude Code, Codex
systematic-debuggingopen-metadata/OpenMetadata	Skill	16k	yesterday	Apache-2.0	A	37	Claude Code
log-error-digestzebbern/claude-code-guide	Skill	4.7k	3d ago	MIT	A	71	Claude Code, Codex
cwv-optimizeradobe/skills	Skill	319	yesterday	Apache-2.0	A	112	Claude Code
ci-fixersipyourdrink-ltd/bernstein	Skill	1.2k	yesterday	Apache-2.0	A	15	Claude Code, Codex
triaging-web-analytics-supportPostHog/posthog	Skill	41k	yesterday	none	A	151	Claude Code, Codex
diagnosing-missing-recordingsPostHog/posthog	Skill	41k	yesterday	none	A	76	Claude Code, Codex

MCPPythonDemo: Skill for Claude Code