Borrowing it
Nothing to install: this file belongs to voro6yov/spec-driven-development. 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/voro6yov/spec-driven-development/main/CLAUDE.mdgit clone --depth 1 https://github.com/voro6yov/spec-driven-developmentWrote 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/voro6yov/spec-driven-development/claude-md)<a href="https://agentmods.dev/instructions/voro6yov/spec-driven-development/claude-md"><img src="https://agentmods.dev/badge/instructions/voro6yov/spec-driven-development/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/voro6yov/spec-driven-development/claude-md"><img src="https://agentmods.dev/badge/instructions/voro6yov/spec-driven-development/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 | $0.04763 | $0.04763 |
| Opus 5.5 | $0.01905 | $0.01905 |
| Sonnet 5.5 | $0.00953 | $0.00953 |
| Haiku 4.5 | $0.00476 | $0.00476 |
Grade B, and why
spec-driven-development CLAUDE.md scanned grade B with 1 finding 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 1mo 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- **The copied reference modules, `spec-core:modules`** — the umbrella home of the **runtime-contract Python modules** the spec pipeline copies verbatim into the target repo during init/scaffold: `shared/` (domain primit How it starts
The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Repository purpose
This is a Claude Code plugin marketplace (.claude-plugin/marketplace.json) for spec-driven development plugins, e.g.:
plugins/domain-spec— generates DDD class specs from a Mermaid class diagram, then implements the domain package and its unit testsplugins/project-scaffold—/project-scaffold:new-servicerenders a new service repo with a deterministic stdlib script (skills/new-service/scaffold.py+templates/), not an LLM: the keystonecontainers.py/settings.py/constants.py/entrypoint.py/__main__.pyshells every/init-*skill and integrator patches into, plus Docker/compose/Liquibase and the vendored spec-core modules. When a plugin agent changes an anchor it inserts after (a container attribute, anentrypoint.pyfunction, a conftest fixture), update the matching template and re-render all 8 layer-flag combinations (--no-persistence/--no-rest/--no-messaging) throughmake check.
There is no application code, no build step, and no test suite. Artifacts are Markdown — skills, agent definitions, and plugin manifests — that are loaded by Claude Code at runtime.
Plugin layout
Each plugin under plugins/<name>/ has:
.claude-plugin/plugin.json— plugin manifest withversion(bump on user-visible changes)agents/*.md— single-purpose subagents with frontmatter (name,description,tools, optionalmodel)skills/<skill>/SKILL.md— reusable skills; umbrella orchestrator skills (e.g.generate-domain) chain agent orchestrators (specs-generator,code-generator), which in turn coordinate the worker agents
plugins/spec-core/skills/modules/ contains Python reference modules (Entity, ValueObject, guards, the persistence context packages, the REST serializers, etc.) that the generated code imports — not source for this repo to test, but the runtime contract that the implementers/scaffolders target and copy verbatim into the target repo. They are homed under the spec-core:modules umbrella skill; see the spec-core section below for the resolution mechanism.
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.
- 1mo ago Changed · +1 lines · +263 tokens per session cbe4a1ff85e4
- 2mo ago First seen · 63 lines · 4,500 tokens per session scan B 5b4e539be00f
spec-driven-development CLAUDE.md is an instructions file published in the GitHub repository voro6yov/spec-driven-development (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 4,763 tokens to every session, about $0.0191 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
spec-driven-development CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| spec-driven-development CLAUDE.mdvoro6yov/spec-driven-development | Instructions file | 5 | 1mo ago | Apache-2.0 | B | 4,763 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |