What is upgrade-advisor?

A code-review advisor for a newsletter-generation repository. It examines the scripts, checks, and agent instructions that control how newsletters are produced.

Use it to review newsletter-generation workflows, validation steps, and execution setup, then produce concrete improvement recommendations and, when requested, opportunity files.

It helps find workflow problems before they disrupt newsletter production. Recommendations are tied to the repository’s real process and ranked by importance.

How briancl2/CustomerNewsletter configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to briancl2/CustomerNewsletter. 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/briancl2/CustomerNewsletter/main/.github/agents/upgrade-advisor.agent.md

Clone the repo

git clone --depth 1 https://github.com/briancl2/CustomerNewsletter

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/briancl2/customernewsletter/upgrade-advisor/github.svg)](https://agentmods.dev/agents/briancl2/customernewsletter/upgrade-advisor)

Your own site

<a href="https://agentmods.dev/agents/briancl2/customernewsletter/upgrade-advisor"><img src="https://agentmods.dev/badge/agents/briancl2/customernewsletter/upgrade-advisor/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/agents/briancl2/customernewsletter/upgrade-advisor"><img src="https://agentmods.dev/badge/agents/briancl2/customernewsletter/upgrade-advisor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 337 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	$0.00029	$0.00337
Opus 5.5	$0.00012	$0.00135
Sonnet 5.5	$0.00006	$0.00067
Haiku 4.5	$0.00003	$0.00034

Measured 2mo ago against content hash 6b9bdc83558f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

upgrade-advisor 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.

.github/agents/upgrade-advisor.agent.md · 26 lines

What it actually says

Non-Negotiable Rules

Treat these surfaces as the primary authority for recommendations:
- Makefile
- tools/prepare_newsletter_cycle.sh
- tools/run_newsletter*.sh
- tools/validate_pipeline_strict.sh
- .github/agents/*.agent.md
- .github/skills/*/SKILL.md
Rank workflow-critical issues ahead of generic architecture or style advice.
When the prompt asks for OPPORTUNITIES.md and OPPORTUNITIES.json, write those first and keep the JSON schema-valid.
Keep recommendations concrete, patchable, and tied to the repo's actual newsletter flow.
Treat gpt-5.5 as the default model for any touched execution path unless the prompt explicitly says otherwise.

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 · 26 lines · 29 tokens per session scan A 6b9bdc83558f

Subscribe to this mod's changes

upgrade-advisor is an agent published in the GitHub repository briancl2/CustomerNewsletter (11 stars, last pushed 5mo ago), licensed MIT. It adds 29 tokens to every session and 337 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.

Code review agentic-workflows agents copilot llmops mkdocs newsletter

upgrade-advisor next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
upgrade-advisorbriancl2/CustomerNewsletter	Agent	11	5mo ago	MIT	A	29	Claude Code
pr-reviewerfeiskyer/claude-code-settings	Agent	1.7k	yesterday	MIT	A	40	Claude Code
code-reviewnavikt/copilot	Agent	60	yesterday	MIT	A	28	Claude Code
critical-reviewersammcj/agentic-coding	Agent	168	2d ago	Apache-2.0	A	52	Claude Code
nav-pilot-opusnavikt/copilot	Agent	60	yesterday	MIT	A	30	Claude Code
RPI ReviewerAndyElessar/skills	Agent	2	11d ago	none	A	31	Claude Code
shadow-auditorAgentWorkforce/relay	Agent	1.1k	today	Apache-2.0	A	27	Claude Code

CustomerNewsletter: Agent for Claude Code