Borrowing it
Nothing to install: this file belongs to Agnuxo1/enigmagent-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/Agnuxo1/enigmagent-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/Agnuxo1/enigmagent-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/agnuxo1/enigmagent-mcp/agents-md)<a href="https://agentmods.dev/instructions/agnuxo1/enigmagent-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/agnuxo1/enigmagent-mcp/agents-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/agnuxo1/enigmagent-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/agnuxo1/enigmagent-mcp/agents-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 | $0.00686 | $0.00686 |
| Opus 5.5 | $0.00274 | $0.00274 |
| Sonnet 5.5 | $0.00137 | $0.00137 |
| Haiku 4.5 | $0.00069 | $0.00069 |
Grade A, and why
enigmagent-mcp AGENTS.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 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.
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 — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — enigmagent-mcp
Version 2.0.0 security contract
The current entry point is index.js and the current vault implementation is
vault-secure.js. index-legacy-v1.js, vault-core.js, and README-legacy-v1.md
are retained only as historical references. Do not use the legacy files in new
code or describe their behavior as the current security boundary.
MCP raw resolution is disabled by default. REST requires a high-entropy Bearer token, loopback binding, bounded JSON, and no browser CORS. A caller-declared origin is not attestation. Never enable raw resolution for an untrusted client, never put a real credential in tests, and never claim that a returned value is invisible to a trusted client or its model after explicit opt-in.
All security-sensitive changes require tests for malformed input, wrong credentials, domain mismatch, redaction, and process continuity. Keep public errors code-based and do not serialize arbitrary exception messages.
This file is addressed to AI agents and LLM-based tools that discover or use this repository.
What this tool does
enigmagent-mcp is a local MCP server that resolves {{PLACEHOLDER}} tokens in your
tool calls and prompts into real credentials — decrypted on the user's machine with
AES-256-GCM + Argon2id — so the plaintext secret never appears in the model context,
logs, or provider APIs.
Tools exposed via MCP
| Tool | Description |
|---|---|
enigmagent_resolve |
Resolves a {{NAME}} placeholder to its decrypted value for the requesting origin. |
enigmagent_list |
Lists available secret names (names only — never values). |
Use enigmagent_list to discover what secrets are available, then reference them in
downstream tool arguments as {{NAME}}. Never log or echo the resolved value back into
the conversation.
Security rules for agents
- Never echo a resolved secret back into the chat or into any file.
- Never cache a resolved value beyond the immediate tool call.
- Detect and redirect — if the user pastes a raw credential into the conversation,
pause and suggest storing it with
enigmagent_setinstead.
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 · +17 lines · +205 tokens per session 9f2cf890fca0
- 1mo ago First seen · 45 lines · 481 tokens per session scan A 8d3b27cd6fee
enigmagent-mcp AGENTS.md is an instructions file published in the GitHub repository Agnuxo1/enigmagent-mcp (6 stars, last pushed 1mo ago), licensed MIT. It adds 686 tokens to every session, about $0.0027 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.