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# Production Notes

> Practitioner notes on production AI agents: evals, guardrails, SRE investigation, and Go runtimes. By Sabith K S, Principal Engineer at StackGen.

Prefer Start here and Featured arcs first. Topics, Recent posts, and All posts follow.

## Start here

- [Agent evals starter pack]({{ "/start/agent-evals/" | absolute_url }}): Testing pyramid, separate grader, and a supervised E2E learning loop humans close with deploy and re-assert.
- [AI agent guardrails with OPA starter pack]({{ "/start/opa-policies/" | absolute_url }}): Authorize tool calls with Open Policy Agent, manage policies as code, time windows, and human approval.
- [SRE as service starter pack]({{ "/start/sre-as-service/" | absolute_url }}): Five posts on AI investigation as a service product for on-call, not an engineering credibility project.
- [SRE on-call starter pack]({{ "/start/sre-on-call/" | absolute_url }}): Five posts on triage, RCA, and observability for on-call.
- [Go agent runtime starter pack]({{ "/start/go-runtime/" | absolute_url }}): Five posts on runtime definition, Go vs Python, and platform split.
- [Building an Enterprise AI Agent Platform in Go]({{ "/series/enterprise-ai-agents-go/" | absolute_url }}): Practitioner series on production AI agents in Go: runtime design, workflows, SRE triage, and platform lessons.
- [Service Rendered Efficiently]({{ "/series/service-rendered-efficiently/" | absolute_url }}): Sibling series on service culture, investigation product decisions, and operator outcomes.
- [What Is an AI Agent Runtime?]({{ "/blog/what-is-an-ai-agent-runtime/" | absolute_url }}): Plain definition of the production agent loop vs platform, chatbot, or notebook demo.
- [What Are SRE AI Agents?]({{ "/blog/what-are-sre-ai-agents/" | absolute_url }}): SRE AI agents for triage, RCA, and bounded autonomy, not demo theater.
- [Python vs Go for AI Agents — Why We Chose Go]({{ "/blog/why-go/" | absolute_url }}): Go vs Python for production agent runtimes: concurrency, deployment, and when Python still wins.

## Featured arcs

- [Agent evals and supervised E2E]({{ "/start/agent-evals/" | absolute_url }}): What belongs in CI, why the grader stays separate, and how coverage grows with human-gated merge, deploy, and re-assert.
- [AI agent guardrails with OPA]({{ "/start/opa-policies/" | absolute_url }}): Policy engine outside the model: allow, deny, ask, Terraform attach, time rules.
- [Service Rendered Efficiently]({{ "/series/service-rendered-efficiently/" | absolute_url }}): Treat AI investigation as a service product for the teams you support.

## Checklists

- [Evidence-gated RCA checklist]({{ "/checklists/evidence-gated-rca/" | absolute_url }}): Prove with receipts before narrating.
- [“Is the agent task done?” checklist]({{ "/checklists/agent-done/" | absolute_url }}): Completion checks that do not self-grade.
- [SRE as service checklist]({{ "/checklists/sre-as-service/" | absolute_url }}): Ten yes/no questions for service-shaped AI investigation.

## Topics

{% assign hub_pages = site.pages | where_exp: "p", "p.hub" %}
{% for page in hub_pages %}
- [{{ page.title }}]({{ page.url | absolute_url }}): {{ page.description }}
{% endfor %}

## Recent posts

{% assign recent_posts = site.posts | slice: 0, 12 %}
{% for post in recent_posts %}
{% unless post.sitemap == false %}
- [{{ post.title }}]({{ post.url | absolute_url }}): {{ post.description }}
{% endunless %}
{% endfor %}

## All posts

{% for post in site.posts %}
{% unless post.sitemap == false %}
- [{{ post.title }}]({{ post.url | absolute_url }}): {{ post.description }}
{% endunless %}
{% endfor %}

## Optional

- [About Sabith K S]({{ "/about/" | absolute_url }}): Author bio, background, and team credits behind Production Notes.
- [Tags]({{ "/tags/" | absolute_url }}): Browse posts by tag.
- [RSS feed]({{ "/feed.xml" | absolute_url }}): Full post feed.
- [Newsletter]({{ site.newsletter_url }}): Low-volume Substack subscribe.
- [Posts index (JSON)]({{ "/assets/posts-index.json" | absolute_url }}): Machine-readable post catalog for agents and WebMCP tools.