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/dedeveloper23/codebase-mcp/claude-mdgit clone --depth 1 https://github.com/DeDeveloper23/codebase-mcpWhat 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 | $0.00270 | $0.00270 |
| Opus 5 | $0.00135 | $0.00135 |
| Sonnet 5 | $0.00054 | $0.00054 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
codebase-mcp 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 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.
Copies of this mod
3 near-identical copies found in the catalogue:
- MCP CLAUDE.md — 100% identical, 6 lines differ
- roblex-studio-mcp-server CLAUDE.md — 100% identical, 0 lines differ
- mcp-appstore CLAUDE.md — 100% identical, 0 lines differ
What it actually says
MCP TypeScript SDK Guide
Build & Test Commands
npm run build # Build ESM and CJS versions
npm run lint # Run ESLint
npm test # Run all tests
npx jest path/to/file.test.ts # Run specific test file
npx jest -t "test name" # Run tests matching pattern
Code Style Guidelines
- TypeScript: Strict type checking, ES modules, explicit return types
- Naming: PascalCase for classes/types, camelCase for functions/variables
- Files: Lowercase with hyphens, test files with
.test.tssuffix - Imports: ES module style, include
.jsextension, group imports logically - Error Handling: Use TypeScript's strict mode, explicit error checking in tests
- Formatting: 2-space indentation, semicolons required, single quotes preferred
- Testing: Co-locate tests with source files, use descriptive test names
- Comments: JSDoc for public APIs, inline comments for complex logic
Project Structure
/src: Source code with client, server, and shared modules- Tests alongside source files with
.test.tssuffix - Node.js >= 18 required
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.
- 2d ago First seen · 25 lines · 270 tokens per session scan A dec0d881d693
codebase-mcp CLAUDE.md is an instructions file published in the GitHub repository DeDeveloper23/codebase-mcp (84 stars, last pushed 1y ago), licensed MIT. It adds 270 tokens to every session, about $0.0014 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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