render-postgres

A guide to managed PostgreSQL databases on Render, a cloud hosting platform. It covers connection URLs, storage, limits, backups, replicas, high availability, and database inspection.

In plain words
What is it for?
It helps connect an app or CI system to Render Postgres, configure storage and replicas, understand connection limits, manage backups, and diagnose SSL or latency problems.
Why use it?
Render provides different connection paths for services inside Render and tools outside it, and some database settings cannot be changed after creation. The guide helps avoid connection, security, capacity, and recovery mistakes.

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

Made for: Claude Code, Codex.

Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,727 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% 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 $0.00083 $0.01727
Opus 5 $0.00042 $0.00864
Sonnet 5 $0.00017 $0.00345
Haiku 4.5 $0.00008 $0.00173

Measured 2d ago against content hash bf12cea2449e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

render-postgres 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.

Origin

This is a copy

91% identical to render-postgres — 7 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/render-postgres/SKILL.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Render Managed PostgreSQL

This skill covers Managed Postgres on Render: how to connect, what cannot change after creation, storage behavior, limits, HA, replicas, and safe deletion. Deep dives live under references/.

When to Use

Apply this skill when the user:

  • Configures Postgres for an app on Render (URLs, TLS, pooling)
  • Creates or changes a database, plan, disk, or replicas
  • Asks about backups, PITR, exports, or deleting a database
  • Hits connection limits, SSL errors, or latency between services and DB
  • Authors Blueprint databases / readReplicas or wires fromDatabase

For deploy flows and Blueprint basics, see render-deploy and render-blueprints. For private networking between services, see render-networking. For env var patterns, see render-env-vars.

Connection Patterns

Render exposes two connection URLs for the same logical database:

URL Use when TLS
Internal App or service on Render in the same region and workspace Not required (private network)
External Local development, CI, or tools outside Render Required (TLS 1.2+)

Always prefer the internal URL for Render-hosted apps so traffic stays on Render’s network and avoids extra latency and public egress patterns.

  • IP allow list applies to external access only. Same-region Render services use the internal URL regardless of the allow list.
  • External clients must use TLS; misconfigured clients often show SSL handshake or sslmode errors.

URL formats, Dashboard locations, Blueprint fromDatabase, pooling, and common mistakes: references/connection-guide.md.

Creation and Setup

  • Instance display name: Can be changed later (where the Dashboard allows renaming the resource).
  • Immutable after creation: databaseName, database user, region, PostgreSQL major version. Plan these before create; changing them requires a new database and migration.
  • Storage size: 1 GB or multiples of 5 GB when provisioning.

Read the full file on GitHub · 143 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. 2d ago First seen · 143 lines · 83 tokens per session scan A bf12cea2449e

Subscribe to this mod's changes

render-postgres is a skill published in the GitHub repository render-oss/render-plugin-claude-code (0 stars, last pushed 13d ago), licensed MIT. It adds 83 tokens to every session and 1,727 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to render-postgres, differing in 7 lines, and is treated as a copy.

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