bex-blueprints

bex-blueprints is a skill for Claude Code, Codex from bex-co/bex. It costs 93 tokens per session (3,022 once invoked), scanned A, original, Apache-2.0.

A helper for writing and checking render.yaml Blueprints, which are YAML files that describe bex infrastructure. It supports connecting services and databases, organising projects and environments, and setting up preview environments.

In plain words
What is it for?
Create or edit render.yaml files, connect applications to databases or private services, group resources, configure previews, and validate the result.
Why use it?
It replaces scattered manual platform settings with a versioned configuration file and catches Blueprint errors before deployment. It also helps express how services share connection details.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Create or edit render.yaml files, connect applications to databases or private services, group resources, configure previews, and validate the result.

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Install with agentmods
npx agentmods add skills/bex-co/bex/bex-blueprints
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 bex-co/bex --skill bex-blueprints
Clone the repo
git clone --depth 1 https://github.com/bex-co/bex

Made for: Claude Code, 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 bex-blueprints

README.md
[![agentmods](https://agentmods.dev/badge/skills/bex-co/bex/bex-blueprints/github.svg)](https://agentmods.dev/skills/bex-co/bex/bex-blueprints)
Your own site
<a href="https://agentmods.dev/skills/bex-co/bex/bex-blueprints"><img src="https://agentmods.dev/badge/skills/bex-co/bex/bex-blueprints/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 bex-blueprints

Your own site · 80×15
<a href="https://agentmods.dev/skills/bex-co/bex/bex-blueprints"><img src="https://agentmods.dev/badge/skills/bex-co/bex/bex-blueprints.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,022 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00093 $0.03022
Opus 5.5 $0.00037 $0.01209
Sonnet 5.5 $0.00019 $0.00604
Haiku 4.5 $0.00009 $0.00302

Measured yesterday against content hash f5724b8c951b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bex-blueprints scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

1. Retrieve the linked Markdown document directly with an available URL-fetching tool or HTTP client, such as `curl`. Do not substitute web-search summaries for the document.
lego/cli/internal/skills/pack/skills/bex-blueprints/SKILL.md · 285 lines

How it starts

The opening of the file, as written. The whole thing — 285 lines — stays where its author put it; the contents beside it link to each section on GitHub.

bex Blueprints (render.yaml)

Blueprints define bex 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/.

Before creating or modifying a Blueprint, read references/blueprints.md for the current specification-fetch, validation, repository-sync, and safety workflow.

For current compute-plan terminology, Plan IDs, and availability, use references/compute-plans.md instead of relying on plan catalogs embedded in examples.

Before adding or changing a service-attached disk, read references/persistent-disks.md for current architectural constraints and configuration workflow.

Before wiring private-network addresses, ports, or discovery hostnames, read references/private-networking.md.

Before choosing a service type or translating its Dashboard name to Blueprint structure, read references/service-types.md.

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 bex’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 bex-deploy. For env var strategy outside Blueprint syntax, see bex-env-vars. For Docker-specific Blueprint fields, see bex-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

Read the full file on GitHub · 285 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 · 285 lines · 93 tokens per session scan A f5724b8c951b

Subscribe to this mod's changes

bex-blueprints is a skill published in the GitHub repository bex-co/bex (577 stars, last pushed today), licensed Apache-2.0. It adds 93 tokens to every session and 3,022 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-29.

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