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.
npx agentmods add instructions/danielbushman/mcp-quickbase/claude-mdgit clone --depth 1 https://github.com/danielbushman/MCP-QuickbaseWrote 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.
[](https://agentmods.dev/instructions/danielbushman/mcp-quickbase/claude-md)<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="Measured on agentmods" height="20"></a>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 | $0.00787 | $0.00787 |
| Opus 5 | $0.00394 | $0.00394 |
| Sonnet 5 | $0.00157 | $0.00157 |
| Haiku 4.5 | $0.00079 | $0.00079 |
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 4d 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.
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.tswith aregister<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.
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.
- 4d ago First seen · 54 lines · 787 tokens per session scan A 5bfd0c72111b
MCP-Quickbase CLAUDE.md is an instructions file published in the GitHub repository danielbushman/MCP-Quickbase (15 stars, last pushed 5mo ago), licensed MIT. It adds 787 tokens to every session, about $0.0039 per session on Opus 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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