Borrowing it
Nothing to install: this file belongs to rafaelsztutman/dtc-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/rafaelsztutman/dtc-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/rafaelsztutman/dtc-mcpWrote 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/rafaelsztutman/dtc-mcp/claude-md)<a href="https://agentmods.dev/instructions/rafaelsztutman/dtc-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/rafaelsztutman/dtc-mcp/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.
<a href="https://agentmods.dev/instructions/rafaelsztutman/dtc-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/rafaelsztutman/dtc-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.01686 | $0.01686 |
| Opus 5 | $0.00843 | $0.00843 |
| Sonnet 5 | $0.00337 | $0.00337 |
| Haiku 4.5 | $0.00169 | $0.00169 |
Grade A, and why
dtc-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 9d 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 — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
dtc-mcp v1.0 — Project conventions
Build & test
npm install # builds isolated-vm via node-gyp (needs C++ toolchain + Python)
npm run build # tsc → dist/
npm test # vitest
npm run dev # tsc --watch
npm run inspect # MCP Inspector
Architecture (post-v1 rewrite)
dtc-mcp now exposes exactly 2 MCP tools: execute_code and search_docs. The 22 hand-built tools and per-tool transforms from v0.2 are gone.
src/
index.ts # bin entrypoint (stdio transport)
server.ts # creates the McpServer + registers the 2 tools
config.ts # lazy per-field env validation (KEEP this pattern)
tools/
execute_code.ts # MCP tool: runs user code in the sandbox (stateful per MCP conn)
search_docs.ts # MCP tool: searches the docs index (BM25)
read_doc.ts # MCP tool: direct fetch by chunk ID, or list all paths
sandbox/
runner.ts # public entry — routes between sidecar and vm
vm-runner.ts # node:vm in-process fallback
sidecar-runner.ts # manages the sidecar child process lifecycle
sidecar/index.ts # sidecar entrypoint — spawned in system Node, loads isolated-vm
protocol.ts # NDJSON message shapes shared between main and sidecar
node-discovery.ts # finds system Node ≥ 20 across PATH/Homebrew/nvm/volta/fnm/asdf
bridge.ts # host-side method registry — every SDK path lives here
proxy-template.ts # in-isolate JS for node:vm (sidecar has its own embedded version)
timeout.ts # `// @timeout` annotation parser
sdk/
klaviyo/host.ts # host-side Klaviyo client: rate limiter + caches + metric ID discovery
shopify/host.ts # host-side Shopify client: token mgr + cost tracker + ql cache
docs/
loader.ts # cache (~/.cache/dtc-mcp/docs.json) + ETag refresh from CDN
search.ts # MiniSearch index
shared/
cache.ts # TTLCache + buildCacheKey
errors.ts # KlaviyoApiError, ShopifyApiError, ConfigError
data/
docs.json # bundled fallback docs index
tools/codegen/ # build-time spec → SDK types + docs.json
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.
- 9d ago First seen · 98 lines · 1,686 tokens per session scan A 4f76de0689c6
dtc-mcp CLAUDE.md is an instructions file published in the GitHub repository rafaelsztutman/dtc-mcp (0 stars, last pushed 3mo ago), licensed MIT. It adds 1,686 tokens to every session, about $0.0084 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 2026-08-31.
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