external-secrets-operator: Instructions file for Codex

AGENTS.md

external-secrets-operator AGENTS.md is an instructions file for Codex, OpenCode from openshift/external-secrets-operator. It costs 2,561 tokens per session, scanned A, original, Apache-2.0.

A project instruction file explaining the External Secrets Operator for OpenShift and the repository's important architecture and development rules. OpenShift is Red Hat's Kubernetes-based platform, and an operator automates the management of an application on it.

In plain words
What is it for?
Use it when working on secret-management controllers, OpenShift resources, embedded manifests, or project-specific patterns and documentation.
Why use it?
It gives an agent the domain context needed to make changes without misunderstanding the operator, its controllers, or its custom resources.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is openshift/external-secrets-operator's own configuration. It tells Codex and OpenCode how to work on external-secrets-operator itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything external-secrets-operator configures →

Reuse

Borrowing it

Nothing to install: this file belongs to openshift/external-secrets-operator. 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/openshift/external-secrets-operator/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/openshift/external-secrets-operator

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Your own site
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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.

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Per session 2,561 This file is loaded in full into every session.
When invoked 2,561 The same file — it is already loaded in full.
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 $0.02561 $0.02561
Opus 5.5 $0.01024 $0.01024
Sonnet 5.5 $0.00512 $0.00512
Haiku 4.5 $0.00256 $0.00256

Measured yesterday against content hash e67d4bc78d76, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

external-secrets-operator AGENTS.md 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 yesterday.

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.

AGENTS.md · 151 lines

How it starts

The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.

External Secrets Operator — Agentic Documentation

Component: External Secrets Operator for Red Hat OpenShift Repository: openshift/external-secrets-operator

Platform Patterns: See openshift/enhancements/ai-docs/ for operator patterns, testing practices, security guidelines, and cross-repo ADRs.

What is ESO?

Manages the lifecycle of the upstream external-secrets project on OpenShift. Deploys and configures the operand via static YAML manifests embedded as bindata — it is not a fork.

Key Principle: The operator owns the operand deployment; users configure via two singleton CRs (ExternalSecretsConfig, ExternalSecretsManager), both named cluster.

Core Components

Component Purpose Location
ExternalSecrets Controller Operand lifecycle (install, update, delete) pkg/controller/external_secrets/
ESM Controller Status aggregation, default ESM creation pkg/controller/external_secrets_manager/
CRD Annotator cert-manager CA injection on CRDs (conditional) pkg/controller/crd_annotator/

Quick Start: oc get esc cluster -o yaml | oc get esm cluster -o yaml | oc get pods -n external-secrets

Critical Patterns

  1. NOT Server-Side Apply — all updates use UpdateWithRetry (Get → set ResourceVersion → Update). Co-managed resources (Secret, ConfigMap) use patchResourceMetadata for metadata-only JSON Patch. Never introduce SSA.
  2. Bindata pipeline — operand manifests are pre-rendered from upstream Helm charts at build time (hack/update-external-secrets-manifests.sh), embedded via openshift/build-machinery-go. pkg/operator/assets/bindata.go is generated — never hand-edit.
  3. Immutable cert-manager fields — mode, injectAnnotations, issuerRef in CertManagerConfig are immutable via CEL self == oldSelf. Network policy entries (name+componentName) also cannot be removed once added.

Read the full file on GitHub · 151 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. yesterday First seen · 151 lines · 2,561 tokens per session scan A e67d4bc78d76

Subscribe to this mod's changes

external-secrets-operator AGENTS.md is an instructions file published in the GitHub repository openshift/external-secrets-operator (13 stars, last pushed 11d ago), licensed Apache-2.0. It adds 2,561 tokens to every session, about $0.0102 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 2026-10-26.

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