Ghost: Skill for Claude Code

.agents/skills/tinybird/SKILL.md

tinybird is a skill for Claude Code, Codex from TryGhost/Ghost. It costs 30 tokens per session (393 once invoked), scanned A, original, MIT.

A set of instructions for building Tinybird data projects with its file formats and SQL. Tinybird is a service for turning data sources and queries into data APIs.

In plain words
What is it for?
Use it when creating or changing Tinybird data sources, SQL pipes, API endpoints, materialized views, or related project files.
Why use it?
It gives consistent guidance for data modeling, query design, optimization, testing, and deduplication.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is TryGhost/Ghost's own configuration. It tells Claude Code and Codex how to work on Ghost 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 Ghost configures →

About the project

Ghost is a publishing platform for creating websites, blogs, memberships, subscriptions, and newsletters. Publishers and developers can use it through managed hosting or run it themselves, while contributors work on its monorepo, themes, and API.

TryGhost/Ghost · 55,632 stars · on GitHub · ghost.org

Reuse

Borrowing it

Nothing to install: this file belongs to TryGhost/Ghost. 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/TryGhost/Ghost/main/.agents/skills/tinybird/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/TryGhost/Ghost

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 tinybird

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/tryghost/ghost/tinybird"><img src="https://agentmods.dev/badge/skills/tryghost/ghost/tinybird.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 393 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00030 $0.00393
Opus 5.5 $0.00012 $0.00157
Sonnet 5.5 $0.00006 $0.00079
Haiku 4.5 $0.00003 $0.00039

Measured 1mo ago against content hash dfeb0ac53e84, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tinybird 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 1mo 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.

.agents/skills/tinybird/SKILL.md · 46 lines

What it actually says

Tinybird Best Practices

Guidance for Tinybird file formats, SQL rules, optimization patterns, and data modeling. Use this skill when creating or editing Tinybird datafiles.

When to Apply

  • Creating or updating Tinybird resources (.datasource, .pipe, .connection)
  • Writing or optimizing SQL queries
  • Designing endpoint schemas and data models
  • Organizing project structure and data layers
  • Working with materialized views or copy pipes
  • Implementing deduplication patterns
  • Reviewing or refactoring Tinybird project files

Rule Files

  • rules/project-files.md
  • rules/build-deploy.md
  • rules/datasource-files.md
  • rules/pipe-files.md
  • rules/endpoint-files.md
  • rules/materialized-files.md
  • rules/materialized-join-prefilter.md
  • rules/sink-files.md
  • rules/copy-files.md
  • rules/connection-files.md
  • rules/sql.md
  • rules/endpoint-optimization.md
  • rules/tests.md
  • rules/deduplication-patterns.md

Quick Reference

  • Project local files are the source of truth.
  • Build target comes from tinybird.config.json dev_mode (local or branch).
  • tb deploy targets Tinybird Cloud production.
  • Commands like tb sql and tb logs default to local unless --cloud or --branch=<branch-name> is set.
  • SQL is SELECT-only with Tinybird templating rules and strict parameter handling.
  • Use MergeTree by default; AggregatingMergeTree for materialized targets.
  • Filter early, select only needed columns, push complex work later in the pipeline.
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. 1mo ago First seen · 46 lines · 30 tokens per session scan A dfeb0ac53e84

Subscribe to this mod's changes

tinybird is a skill published in the GitHub repository TryGhost/Ghost (55,632 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 393 once invoked, about $0.0001 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 2026-09-01.

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