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 skills add magnus919/agent-skills --skill tailscalegit clone --depth 1 https://github.com/magnus919/agent-skillsWrote 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/magnus919/agent-skills/tailscale)<a href="https://agentmods.dev/skills/magnus919/agent-skills/tailscale"><img src="https://agentmods.dev/badge/skills/magnus919/agent-skills/tailscale/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/magnus919/agent-skills/tailscale"><img src="https://agentmods.dev/badge/skills/magnus919/agent-skills/tailscale.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00092 | $0.01748 |
| Opus 5 | $0.00046 | $0.00874 |
| Sonnet 5 | $0.00018 | $0.00350 |
| Haiku 4.5 | $0.00009 | $0.00175 |
Grade A, and why
tailscale 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 6d 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.
compatibility: Requires bash, Python 3.8+, jq, curl, and access to a Headscale server How it starts
The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tailscale + Headscale Skill Bundle
This umbrella skill covers the self-hosted Tailscale ecosystem using Headscale as the open-source control server. It provides 7 sub-skills that are auto-loaded by context.
Auto-Loading by Context
When the user's message matches a trigger keyword, the corresponding sub-skill's SKILL.md is loaded. Multiple sub-skills can load together when triggers overlap.
| Trigger Keywords | Sub-Skill(s) Loaded |
|---|---|
| "deploy headscale", "install headscale", "setup headscale server", "headscale config" | headscale-deploy |
| "ACL", "policy file", "tailnet policy", "access control", "grant", "tag owners" | tailnet-policy |
| "install tailscale", "connect to headscale", "tailscale client", "tailscale up", "tailscale status", "diagnose tailscale", "connectivity" | tailscale-client |
| "auth key", "preauthkey", "register node", "approve node", "tag node", "node list", "decommission node" | headscale-node-lifecycle |
| "subnet router", "exit node", "advertise route", "approve route" | headscale-routing |
| "DERP", "relay", "peer relay", "STUN" | headscale-derp |
| "backup headscale", "restore headscale", "migrate headscale", "headscale backup" | headscale-backup |
| "Tailscale", "Headscale", "tailnet", "mesh VPN", "WireGuard mesh", "self-hosted VPN" | Loads this umbrella SKILL.md for navigation |
Sub-Skill Ordering & Dependencies
headscale-deploy ─────┬──> tailnet-policy ───> headscale-routing
│
├──> headscale-node-lifecycle
│
├──> tailscale-client
│
├──> headscale-derp
│
└──> headscale-backup (prerequisite: a running headscale instance)
- headscale-deploy must be completed first — the others require a running Headscale server
- tailnet-policy (configures ACLs) is recommended before opening the tailnet to other users
- headscale-derp is optional but recommended for reliability across NATs
- headscale-backup should be run regularly on any production deployment
What ships with it
60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- AGENTS.md 1.1 KB
- evals/evals.json 6.3 KB
- manifest.yaml 2.9 KB
- README.md 2.1 KB
- references/derp-architecture.md 3.2 KB
- references/headscale-cli-commands.md 3.0 KB
- references/headscale-rest-api.md 2.7 KB
- references/identity-model.md 2.5 KB
- references/policy-syntax-reference.md 3.5 KB
- references/routing-reference.md 3.2 KB
- references/tailscale-client-flags.md 3.8 KB
- references/troubleshooting-guide.md 4.4 KB
- scripts/headscale-backup.sh 3.0 KB runs code
- scripts/headscale-health-check.sh 2.3 KB runs code
- scripts/headscale-restore.sh 3.8 KB runs code
- scripts/tailscale-status-json.sh 3.3 KB runs code
- scripts/test-all.sh 4.2 KB runs code
- skills/headscale-backup/evals/evals.json 6.4 KB
- skills/headscale-backup/README.md 531 B
- skills/headscale-backup/scripts/hs-backup.sh 7.4 KB runs code
- skills/headscale-backup/scripts/hs-migrate.sh 9.2 KB runs code
- skills/headscale-backup/scripts/hs-restore.sh 11 KB runs code
- skills/headscale-backup/SKILL.md 3.2 KB
- skills/headscale-deploy/evals/evals.json 5.9 KB
- skills/headscale-deploy/README.md 479 B
- skills/headscale-deploy/scripts/configure-derp.sh 8.3 KB runs code
- skills/headscale-deploy/scripts/headscale-health-check.sh 8.1 KB runs code
- skills/headscale-deploy/scripts/install-headscale.sh 9.4 KB runs code
- skills/headscale-deploy/SKILL.md 4.9 KB
- skills/headscale-derp/evals/evals.json 5.2 KB
- skills/headscale-derp/README.md 494 B
- skills/headscale-derp/scripts/deploy-derp.sh 10 KB runs code
- skills/headscale-derp/scripts/derp-health-check.py 12 KB runs code
- skills/headscale-derp/scripts/test-derp-latency.sh 8.0 KB runs code
- skills/headscale-derp/SKILL.md 5.6 KB
- skills/headscale-node-lifecycle/evals/evals.json 5.5 KB
- skills/headscale-node-lifecycle/README.md 474 B
- skills/headscale-node-lifecycle/scripts/hs-approve-nodes.sh 4.9 KB runs code
- skills/headscale-node-lifecycle/scripts/hs-create-authkey.sh 4.6 KB runs code
- skills/headscale-node-lifecycle/scripts/hs-list-nodes.sh 4.4 KB runs code
- skills/headscale-node-lifecycle/scripts/hs-tag-node.sh 7.3 KB runs code
- skills/headscale-node-lifecycle/SKILL.md 5.1 KB
- skills/headscale-routing/evals/evals.json 5.5 KB
- skills/headscale-routing/README.md 497 B
- skills/headscale-routing/scripts/hs-advertise-routes.sh 6.5 KB runs code
- skills/headscale-routing/scripts/hs-approve-routes.sh 9.5 KB runs code
- skills/headscale-routing/scripts/hs-list-routes.sh 5.9 KB runs code
- skills/headscale-routing/SKILL.md 4.9 KB
- skills/tailnet-policy/evals/evals.json 5.7 KB
- skills/tailnet-policy/README.md 475 B
- skills/tailnet-policy/scripts/migrate-acls-to-grants.py 14 KB runs code
- skills/tailnet-policy/scripts/reload-headscale-policy.sh 5.3 KB runs code
- skills/tailnet-policy/scripts/validate-policy.py 18 KB runs code
- skills/tailnet-policy/SKILL.md 7.7 KB
- skills/tailscale-client/evals/evals.json 5.3 KB
- skills/tailscale-client/README.md 527 B
- skills/tailscale-client/scripts/ts-connectivity-report.py 16 KB runs code
- skills/tailscale-client/scripts/ts-diagnostics.sh 9.7 KB runs code
- skills/tailscale-client/scripts/ts-install.sh 9.3 KB runs code
- skills/tailscale-client/scripts/ts-up.sh 6.4 KB runs code
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.
- 6d ago First seen · 115 lines · 92 tokens per session scan A 4507ac059576
tailscale is a skill published in the GitHub repository magnus919/agent-skills (75 stars, last pushed today), licensed MIT. It adds 92 tokens to every session and 1,748 once invoked, about $0.0005 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 2026-09-03.
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