What is MCP-Quickbase CLAUDE.md?

A set of Claude Code instructions for the Quickbase MCP server, including its shell, file-naming, architecture, and tool-registration conventions. Quickbase is a business database service.

Working on the Quickbase MCP server, especially when adding tools, checking configuration handling, or editing files in its TypeScript codebase.

It documents project-specific exceptions that could otherwise lead to commands, filenames, or tool registrations being placed incorrectly.

How danielbushman/MCP-Quickbase configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to danielbushman/MCP-Quickbase. 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/danielbushman/MCP-Quickbase/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/danielbushman/MCP-Quickbase

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

[![agentmods](https://agentmods.dev/badge/instructions/danielbushman/mcp-quickbase/claude-md/github.svg)](https://agentmods.dev/instructions/danielbushman/mcp-quickbase/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/danielbushman/mcp-quickbase/claude-md"><img src="https://agentmods.dev/badge/instructions/danielbushman/mcp-quickbase/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

<a href="https://agentmods.dev/instructions/danielbushman/mcp-quickbase/claude-md"><img src="https://agentmods.dev/badge/instructions/danielbushman/mcp-quickbase/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 787 This file is loaded in full into every session.

When invoked 787 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	$0.00787	$0.00787
Opus 5.5	$0.00315	$0.00315
Sonnet 5.5	$0.00157	$0.00157
Haiku 4.5	$0.00079	$0.00079

Measured 2mo ago against content hash 5bfd0c72111b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

MCP-Quickbase 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 · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Guidelines for Quickbase MCP Server

######## IMPORTANT! SHELL TARGET: ZSH ######## IMPORTANT! SHELL TARGET: ZSH ######## All commands execute in ZSH. Use POSIX-compatible syntax. Never use bash-only syntax. Avoid: $RANDOM, [[ ]], bash arrays, which. Use: command -v, [ ], grep -E, portable syntax. ######## IMPORTANT! SHELL TARGET: ZSH ######## IMPORTANT! SHELL TARGET: ZSH ########

Naming Conventions

Files use snake_case (create_record.ts), not kebab-case. This deviates from many TypeScript projects.

Architecture Deviations

check_configuration is NOT a BaseTool

The check_configuration tool is registered directly in src/mcp-stdio-server.ts as an inline MCP handler — it does NOT extend BaseTool and is NOT in the tool registry. This is intentional: it must be available even when the Quickbase client fails to initialize (missing credentials). Every other tool goes through BaseTool and the registry.

Tool Registration is NOT in registry.ts

Despite the name, src/tools/registry.ts only defines the ToolRegistryImpl class/singleton. Tools are registered via domain-specific index.ts files (e.g., src/tools/records/index.ts) which are called from src/tools/index.ts:initializeTools(). To add a new tool domain:

Create src/tools/<domain>/index.ts with a register<Domain>Tools(client) function
Call it from src/tools/index.ts:initializeTools()

Dual Server Versions

The MCP server version is hardcoded in both src/mcp-stdio-server.ts and src/mcp/server.ts. Both must be updated when bumping versions (they are independent of package.json).

Quickbase API Pitfalls

See .claude/docs/quickbase-api-pitfalls.md for Quickbase-specific API quirks that cause subtle bugs.

Validation Limitations

paramSchema on tools is JSON Schema, but createMcpZodSchema() in src/utils/validation.ts converts it to Zod with shallow support only. Nested type: "object" becomes z.record(z.unknown()) — nested property validation is NOT enforced at the MCP layer. Invalid nested values pass through and are rejected by the Quickbase API at runtime. This affects groupBy, orderBy, summaryFields, and any other array-of-objects parameters.

Read the full file on GitHub · 54 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 · 54 lines · 787 tokens per session scan A 5bfd0c72111b

Subscribe to this mod's changes

MCP-Quickbase CLAUDE.md is an instructions file published in the GitHub repository danielbushman/MCP-Quickbase (15 stars, last pushed 8mo ago), licensed MIT. It adds 787 tokens to every session, about $0.0031 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 2026-08-30.

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MCP-Quickbase: Instructions file for Claude Code