render-blueprints

A skill for writing and checking Render Blueprints, YAML files that describe cloud services and how they are configured. It covers services, databases, reusable environment-variable groups, projects, environments, and preview environments.

In plain words
What is it for?
Use it to create or edit a render.yaml file, connect databases or private services to application variables, group resources, configure pull-request previews, and validate the Blueprint.
Why use it?
It helps turn a multi-service Render setup into a structured configuration and catches schema or wiring problems. It also explains which resource settings can or cannot be changed after creation.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/render-oss/render-plugin-claude-code/render-blueprints
Any agent
npx skills add render-oss/render-plugin-claude-code --skill render-blueprints
Clone the repo
git clone --depth 1 https://github.com/render-oss/render-plugin-claude-code

Made for: Claude Code, Codex.

Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,379 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00091 $0.02379
Opus 5 $0.00046 $0.01189
Sonnet 5 $0.00018 $0.00476
Haiku 4.5 $0.00009 $0.00238

Measured 2d ago against content hash 70ce7fae4f13, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

render-blueprints 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 2d 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.

skills/render-blueprints/SKILL.md · 267 lines

How it starts

The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Render Blueprints (render.yaml)

Blueprints define Render infrastructure as YAML (commonly render.yaml at the repo root). This skill focuses on authoring, wiring, projects/environments, previews, validation, and immutable fields. Heavy detail lives under references/.

When to Use

Apply this skill when the user:

  • Creates or edits a render.yaml / Blueprint
  • Wires databases, private services, or Key Value into app env vars
  • Groups services with projects and environments
  • Configures preview environments for pull requests
  • Validates YAML against Render’s schema or CLI
  • Asks what can or cannot change after a resource is created

For end-to-end deploy flows and MCP/CLI operations, see render-deploy. For env var strategy outside Blueprint syntax, see render-env-vars. For Docker-specific Blueprint fields, see render-docker.

Blueprint Structure

Top-level keys

Key Purpose
services Web, worker, cron, private service, Key Value, static (via web + runtime: static)
databases Managed PostgreSQL instances
envVarGroups Reusable env var sets attached to services
projects Optional grouping; contains environments and service lists
previews Defaults for PR preview environments

A Blueprint may also use patterns like ungrouped resources vs environment-scoped lists, depending on whether you adopt the projects model. Avoid duplicating the same logical resource in multiple places (see references/common-mistakes.md).

Schema and IDE validation

  • JSON Schema URL: https://render.com/schema/render.yaml.json
  • Configure your editor to associate render.yaml with that schema for completions and diagnostics.

Minimal example: web + PostgreSQL

databases:
  - name: mydb
    plan: basic-256mb
    region: oregon

services:
  - type: web
    name: api
    runtime: node
    region: oregon
    plan: starter
    buildCommand: npm ci && npm run build
    startCommand: npm start
    envVars:
      - key: DATABASE_URL
        fromDatabase:
          name: mydb
          property: connectionString

Read the full file on GitHub · 267 lines

Files

What ships with it

4 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. 2d ago First seen · 267 lines · 91 tokens per session scan A 70ce7fae4f13

Subscribe to this mod's changes

render-blueprints is a skill published in the GitHub repository render-oss/render-plugin-claude-code (0 stars, last pushed 13d ago), licensed MIT. It adds 91 tokens to every session and 2,379 once invoked, about $0.0005 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 2026-08-30.

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