Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/IvanSkainet/arena-agentnpx agentmods add skills/ivanskainet/arena-agent/arena-bridgeWrote 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/skills/ivanskainet/arena-agent/arena-bridge)<a href="https://agentmods.dev/skills/ivanskainet/arena-agent/arena-bridge"><img src="https://agentmods.dev/badge/skills/ivanskainet/arena-agent/arena-bridge/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/skills/ivanskainet/arena-agent/arena-bridge"><img src="https://agentmods.dev/badge/skills/ivanskainet/arena-agent/arena-bridge.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 | $0.00000 | $0.01216 |
| Opus 5 | $0.00000 | $0.00608 |
| Sonnet 5 | $0.00000 | $0.00243 |
| Haiku 4.5 | $0.00000 | $0.00122 |
Grade A, and why
arena-bridge 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 11d 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://127.0.0.1:8765/health How it starts
The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
arena-bridge (Skainet Bridge Skill)
Skill and protocol specification for AI agents (Arena.ai Agent Mode, Claude Code, Codex, Cursor, and custom agentic frameworks) interacting with Skainet Bridge.
1. Overview & Purpose
Skainet Bridge is an authenticated, local-first bridge that breaks AI agents out of restrictive sandboxes (such as Arena.ai's 128 MB snapshot cap and GPU/X11 absence) and connects them directly to the operator's real machine, local tools, file system, and hardware.
This skill equips agents with the exact operational protocol:
- Connecting to the bridge (Local loopback, Tailscale Funnel, Cloudflare, ngrok, bore);
- Bypassing sandbox filesystem limits (persistent storage on host, >128 MB);
- Offloading heavy compute, game engines (e.g. Godot), and GPU tasks to the host;
- Executing MCP tools and managing long-running background processes;
- Structured task execution via Spec-Kit (T0..Tn) and Serena session recall.
2. Discovery & Connection
Connection Transports
The bridge exposes an HTTP/REST API and an MCP (Model Context Protocol) endpoint:
- Local host:
http://127.0.0.1:8765 - Tailscale Funnel:
https://<node-name>.ts.net - Public Tunnels: ngrok (
https://<id>.ngrok-free.dev), Cloudflare Quick Tunnels, or bore.
Authentication
Every request requires the master token in the Authorization header:
Authorization: Bearer <TOKEN>
Tip: On first launch, start.bat / start.sh automatically generates token.txt
and copies the token to the clipboard.
Diagnostics & Handshake
To verify connectivity from inside the agent sandbox:
python scripts/check_bridge.py
Or query endpoints directly:
# 1. Check health & version
curl -s http://127.0.0.1:8765/health
# 2. Authenticated self-descriptor (profile & active tools)
curl -s -H "Authorization: Bearer $(cat token.txt)" http://127.0.0.1:8765/v1/self
# 3. Active tunnel & external URL status
curl -s -H "Authorization: Bearer $(cat token.txt)" http://127.0.0.1:8765/v1/tunnels/status
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.
- 11d ago First seen · 109 lines · 0 tokens per session scan A 62f2a0a77184
arena-bridge is a skill published in the GitHub repository IvanSkainet/arena-agent (6 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,216 tokens. 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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