What is airtable-interface-extension-kit CLAUDE.md?

Project instructions for the Airtable Interface Extension Kit, a starter kit for building custom interfaces inside Airtable. Airtable is a database and collaboration service, and an extension adds a tailored interface to it.

Use them when building React and Ant Design interface extensions, reading Airtable records, creating or updating records, working with linked records or formulas, or handling components inside Airtable's iframe.

They point developers to important SDK limitations and project conventions before they add code, reducing silent errors that may not produce an obvious message.

How Firework-Labs/airtable-interface-extension-kit configures Claude C

Reuse

Borrowing it

Nothing to install: this file belongs to Firework-Labs/airtable-interface-extension-kit. 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/Firework-Labs/airtable-interface-extension-kit/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Firework-Labs/airtable-interface-extension-kit

Made for: Claude Code.

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.

README.md

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Your own site

<a href="https://agentmods.dev/instructions/firework-labs/airtable-interface-extension-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/firework-labs/airtable-interface-extension-kit/claude-md/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.

Your own site · 80×15

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Per session 1,163 This file is loaded in full into every session.

When invoked 1,163 The same file — it is already loaded in full.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.01163	$0.01163
Opus 5.5	$0.00465	$0.00465
Sonnet 5.5	$0.00233	$0.00233
Haiku 4.5	$0.00116	$0.00116

Measured 2mo ago against content hash ca419a9d3957, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

airtable-interface-extension-kit CLAUDE.md 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 2mo 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.

CLAUDE.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Airtable Interface Extension Kit

Project Overview

This is a starter kit, not a working app. It packages the project-agnostic SDK gotchas, antd-iframe rules, and reusable React/antd scaffolding from a production Airtable Custom Interface project, so a new project can clone, brand, and build a working extension in one sitting. When this kit is cloned for a real project, the consuming project should rewrite this file from scratch (don't diff against the kit's version).

Tech Stack

Airtable Custom Interface (Edit Source path), React 16.14.0 (SDK constraint), antd 5.22.7 + dayjs + marked + DOMPurify via CDN runtime injection, bash concatenation builds. No npm.

Critical reading

Before adding code, read airtable-sdk-gotchas.md. Many of the SDK's failure modes are silent — wrong behavior with no error.

Doc	When to read
airtable-sdk-gotchas.md	Before any code that touches `useRecords`, `useBase`, `getCellValue*`, `createRecordAsync`, `updateRecordAsync`
airtable-api-patterns.md	Before writing linked-record updates, formula fields, or automation scripts
antd-in-iframe-canon.md	Before adding any antd component that uses popups, modals, messages, or layouts
build-and-deploy.md	When the build/concat order doesn't match what you expect, or when adding new shared deps
ux-conventions.md	When designing a new view (filter semantics, persistence, drawer keys, etc.)
lessons-learned-airtable.md	For deeper context on why specific gotchas exist (cite the original session date for traceability)
porting-checklist.md	First-time clone: clone → brand → build → paste workflow
hello-world-airtable-setup.md	What table schema the demo expects

Read the full file on GitHub · 68 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.

2mo ago First seen · 68 lines · 1,163 tokens per session scan A ca419a9d3957

Subscribe to this mod's changes

airtable-interface-extension-kit CLAUDE.md is an instructions file published in the GitHub repository Firework-Labs/airtable-interface-extension-kit (5 stars, last pushed 1mo ago), licensed MIT. It adds 1,163 tokens to every session, about $0.0047 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 2026-08-31.

Databases React airtable airtable-extensions antd interface-extensions starter-kit

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airtable-interface-extension-kit: Instructions file for Claude Code