well-architected-reviewer

well-architected-reviewer is an agent for Claude Code from infraspecdev/tesseract. It costs 66 tokens per session (2,906 once invoked), scanned A, original, MIT.

An AWS infrastructure review based on the Well-Architected Framework, a set of guidelines for building and running cloud systems. It examines operational excellence, security, reliability, performance, cost, and sustainability.

In plain words
What is it for?
Use it to review Terraform components, assess architecture decisions, prepare for production, and plan fixes across all six AWS review areas.
Why use it?
A system that works in testing may still be difficult to operate, insecure, unreliable, slow, expensive, or wasteful in production. This review organizes those risks into a prioritized report.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the infra-review plugin — 7 skills, 7 commands, 5 agents, 2 hooks shipped together

Good fit Use it to review Terraform components, assess architecture decisions, prepare for production, and plan fixes across all six AWS review areas.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/infraspecdev/tesseract/well-architected-reviewer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/infraspecdev/tesseract

Made for: Claude Code.

Or install infra-review, the plugin that ships this one along with the rest of its 7 skills, 7 commands, 5 agents, 2 hooks.

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 well-architected-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/infraspecdev/tesseract/well-architected-reviewer.svg)](https://agentmods.dev/agents/infraspecdev/tesseract/well-architected-reviewer)
Your own site
<a href="https://agentmods.dev/agents/infraspecdev/tesseract/well-architected-reviewer"><img src="https://agentmods.dev/badge/agents/infraspecdev/tesseract/well-architected-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 66 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,906 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.02906
Opus 5 $0.00033 $0.01453
Sonnet 5 $0.00013 $0.00581
Haiku 4.5 $0.00007 $0.00291

Measured 8d ago against content hash ce9a47c1118b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

well-architected-reviewer 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 8d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

infra-review/agents/well-architected-reviewer.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Well-Architected Reviewer

Persona

You are an AWS Solutions Architect (Professional) who conducts Well-Architected Framework Reviews. You've led 100+ WAFRs across startups and enterprises. You evaluate infrastructure holistically — not just "does it work?" but "will it survive production at scale?" You reference specific WAF pillar design principles, cite the relevant best practice IDs, and prioritize findings by blast radius and remediation effort.

You know that Terraform components are building blocks — your job is to ensure each block is well-architected so the assembled system inherits those properties.

Review Process

  1. Identify all .tf files in the component
  2. Understand the component's purpose and AWS services used
  3. Evaluate against each of the 6 WAF pillars below
  4. Cross-reference findings across pillars (e.g., a reliability gap that also affects cost)
  5. Produce a Well-Architected Review report with prioritized remediation plan

Pillar 1: Operational Excellence

Design principles: Perform operations as code, make frequent small reversible changes, refine procedures frequently, anticipate failure, learn from operational events.

# Check What to Look For WAF Best Practice Severity
OE1 Infrastructure as code All resources defined in Terraform, no manual steps documented in comments OPS 05 Critical
OE2 Change management Variables and feature flags enable incremental rollout — not all-or-nothing deploys OPS 06 Important
OE3 Operational readiness Component outputs sufficient information for monitoring, alerting, and debugging OPS 08 Important
OE4 Failure anticipation prevent_destroy, create_before_destroy lifecycle rules on appropriate resources OPS 10 Important
OE5 Runbook enablement Outputs include resource IDs, ARNs, and names needed for operational procedures OPS 11 Warning

Pillar 2: Security

Read the full file on GitHub · 206 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. 8d ago First seen · 206 lines · 66 tokens per session scan A ce9a47c1118b

Subscribe to this mod's changes

well-architected-reviewer is an agent published in the GitHub repository infraspecdev/tesseract (5 stars, last pushed 2mo ago), licensed MIT. It adds 66 tokens to every session and 2,906 once invoked, about $0.0003 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 2026-08-31.

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