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/deuriib/mcp-gateway/agents-mdgit clone --depth 1 https://github.com/deuriib/mcp-gatewayWrote 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/deuriib/mcp-gateway/agents-md)<a href="https://agentmods.dev/instructions/deuriib/mcp-gateway/agents-md"><img src="https://agentmods.dev/badge/instructions/deuriib/mcp-gateway/agents-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 | $0.02790 | $0.02790 |
| Opus 5 | $0.01395 | $0.01395 |
| Sonnet 5 | $0.00558 | $0.00558 |
| Haiku 4.5 | $0.00279 | $0.00279 |
Grade A, and why
mcp-gateway AGENTS.md scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s http://127.0.0.1:8080/dashboard | head -n 20 # 200 HTML htpy + Tailwind How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Project Overview
MCP Gateway — A standalone Python CLI that aggregates multiple MCP servers behind a single HTTP/SSE endpoint with Code Mode and a local-first Dashboard (v1.4.1 GA).
Tech Stack
- Language: Python 3.12+
- Package Manager: uv (with mise for tool versions)
- CLI Framework: click
- HTTP Server: Starlette + uvicorn
- MCP SDK: mcp v2.0.0
- Dashboard: htpy + python-htmx + TailwindCSS vendoreado (sin Node, sin build)
- Sandbox: starlark-pyo3
- Testing: pytest + pytest-asyncio (254 tests v1.4.1)
- Linting: ruff
Project Structure
src/mcp_gway/
├── __init__.py # Package version (1.4.1)
├── models.py # Pydantic models (MCPServerConfig OpenCode + MCPClientConfig deprecated compat, ToolInfo, ConnectionType)
├── registry.py # .pyi file CRUD (servers/ directory) — única fuente de verdad
├── sandbox.py # Starlark sandbox (hermetic execution)
├── server_proxy.py # MCP server wrapper for sandbox
├── code_mode.py # 4 meta-tools orchestrator
├── gateway.py # HTTP/SSE server (JSON-RPC 2.0) + monta Dashboard, local-first 127.0.0.1 + CSP
├── dashboard/ # Bounded context UI — sin Node, sin DB
│ ├── routes.py # SSR + API + static mounts
│ ├── views.py # htpy components (layout, table, drawer, badges)
│ ├── api.py # handlers Registry + masking + htmx negotiation
│ └── static/
│ ├── tailwind.css # vendoreado <100KB (commit, sin build)
│ └── htmx.min.js # vendoreado <20KB
├── cli.py # CLI commands (add/remove/update/list/inspect/refresh/serve --host 127.0.0.1)
└── oauth.py # OAuth2 support (dynamic registration, token storage)
tests/
├── test_models.py # Model validation tests
├── test_registry.py # Registry CRUD tests
├── test_sandbox.py # Sandbox execution tests
├── test_server_proxy.py # Server proxy tests
├── test_code_mode.py # Code mode tests
├── test_gateway.py # HTTP/SSE server tests
├── test_dashboard_api.py # Dashboard API (CRUD, masking, reveal, refresh, local gating)
├── test_dashboard_views.py # htpy SSR snapshots (<table>, badges, empty state)
├── test_cli.py # CLI command tests
└── test_integration.py # End-to-end flow tests
docs/specs/
├── SPEC-UI-001.md # Dashboard spec v1.4.1 GA (vinculante)
├── SCENARIOS-UI-001.md # Given/When/Then 28 scenarios
└── ACCEPTANCE-UI-001.md # 9 AC ejecutables (TestClient)
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 · 164 lines · 2,790 tokens per session scan A 14ba395b1868
mcp-gateway AGENTS.md is an instructions file published in the GitHub repository deuriib/mcp-gateway (0 stars, last pushed 8d ago), licensed MIT. It adds 2,790 tokens to every session, about $0.0140 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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