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render-env-vars

render-env-vars is a skill for Codex from cass-2003/local-workflow-skill. It costs 60 tokens per session (1,861 once invoked), scanned A, a copy of render-env-vars, MIT.

A guide to environment variables on Render: named settings that applications read at runtime, including secrets and values shared between services. It covers configuring them in the Dashboard, a Blueprint, or the API.

In plain words
What is it for?
Use it to add or change environment variables, manage secrets, create shared environment groups, or troubleshoot configuration passed to a Render service.
Why use it?
It helps prevent missing, incorrect, or unsafely shared configuration values. It also explains how services can receive values from databases, other services, or shared groups.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 12repo 2mo ago A scan 60 tokens copy · 100% MIT

Good fit Use it to add or change environment variables, manage secrets, create shared environment groups, or troubleshoot configuration passed to a Render service.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cass-2003/local-workflow-skill/render-env-vars
View source ↗ cass-2003/local-workflow-skill
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.

Any agent
npx skills add cass-2003/local-workflow-skill --skill render-env-vars
Clone the repo
git clone --depth 1 https://github.com/cass-2003/local-workflow-skill

Made for: 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.

agentmods badge for render-env-vars

README.md
[![agentmods](https://agentmods.dev/badge/skills/cass-2003/local-workflow-skill/render-env-vars/github.svg)](https://agentmods.dev/skills/cass-2003/local-workflow-skill/render-env-vars)
Your own site
<a href="https://agentmods.dev/skills/cass-2003/local-workflow-skill/render-env-vars"><img src="https://agentmods.dev/badge/skills/cass-2003/local-workflow-skill/render-env-vars/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.

agentmods 80×15 button for render-env-vars

Your own site · 80×15
<a href="https://agentmods.dev/skills/cass-2003/local-workflow-skill/render-env-vars"><img src="https://agentmods.dev/badge/skills/cass-2003/local-workflow-skill/render-env-vars.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,861 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 100% copy Near-identical to another mod 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 $0.00060 $0.01861
Opus 5 $0.00030 $0.00931
Sonnet 5 $0.00012 $0.00372
Haiku 4.5 $0.00006 $0.00186

Measured 6d ago against content hash 8a36aedcedc3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

render-env-vars 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 6d 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

This is a copy

100% identical to render-env-vars — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/cloud-infra/codex/render-env-vars/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Environment Variables on Render

Render exposes configuration to services as environment variables. Values are always strings at the platform layer—applications must parse numbers, booleans, and structured data explicitly.

There are three primary ways to set variables:

  1. Render Dashboard — per-service UI, bulk import from .env, save/redeploy options
  2. Blueprint — envVars (and related keys) in render.yaml
  3. MCP / API — e.g. update_environment_variables on a service

Deep wiring patterns, full platform variable tables, and language-specific notes live under references/.

When to Use This Skill

Use this skill when users want to:

  • Add, change, or remove environment variables or secrets
  • Understand Dashboard vs Blueprint vs API/MCP flows
  • Use environment groups for shared configuration
  • Wire fromDatabase, fromService, fromGroup, sync: false, or generateValue in Blueprints
  • Debug missing vars, secret files, precedence, or platform-injected names

For full Blueprint authoring, pair with render-blueprints. For first-time deploys, render-deploy. For web service behavior and ports, render-web-services.

Setting Variables

Dashboard

  • Add variables individually (name + value) or in bulk by pasting/uploading a .env-style file.
  • Save options typically include:
    • Save and rebuild & deploy — picks up build-time changes
    • Deploy only — runtime change without a full rebuild (when applicable)
    • Save only — persist without triggering a deploy

Use Dashboard edits when iterating quickly or when the repo should not carry certain values.

Blueprint (render.yaml)

Declare envVars on each service. Values can be literals, generated secrets, sync-disabled prompts, or references to databases, other services, or env groups. See Blueprint Wiring below and references/wiring-reference.md for exhaustive patterns and YAML.

MCP / API

Automation tools can set variables on existing services (e.g. update_environment_variables). Useful for CI, rotation, or keeping Dashboard state in sync with external secret stores—without committing secrets to Git.

Read the full file on GitHub · 142 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago First seen · 142 lines · 60 tokens per session scan A 8a36aedcedc3

Subscribe to this mod's changes

render-env-vars is a skill published in the GitHub repository cass-2003/local-workflow-skill (12 stars, last pushed 2mo ago), licensed MIT. It adds 60 tokens to every session and 1,861 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to render-env-vars, differing in 6 lines, and is treated as a copy.

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