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/pantheon-org/tekhnenpx agentmods add skills/pantheon-org/tekhne/colyseus-multiplayerWrote 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/pantheon-org/tekhne/colyseus-multiplayer)<a href="https://agentmods.dev/skills/pantheon-org/tekhne/colyseus-multiplayer"><img src="https://agentmods.dev/badge/skills/pantheon-org/tekhne/colyseus-multiplayer/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/pantheon-org/tekhne/colyseus-multiplayer"><img src="https://agentmods.dev/badge/skills/pantheon-org/tekhne/colyseus-multiplayer.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 | $0.00081 | $0.01606 |
| Opus 5 | $0.00041 | $0.00803 |
| Sonnet 5 | $0.00016 | $0.00321 |
| Haiku 4.5 | $0.00008 | $0.00161 |
Grade A, and why
colyseus-multiplayer 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 9d 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 — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Colyseus Multiplayer
When to Use
Use this skill for server-authoritative multiplayer game backends using Colyseus.
When Not to Use
Do not use this skill for peer-to-peer networking or single-player game architecture.
Core Principles
- Server is authoritative for all game state.
- Room state changes must be validated before applying.
- Reconnection and drop handling must be explicit.
- Matchmaking metadata must reflect real room capability.
Deterministic Workflow
- Define state models in Schema.
- Implement room lifecycle hooks (
onCreate,onJoin,onLeave,onDrop). - Register message handlers with payload validation.
- Checkpoint: Verify schema sync with a test client before proceeding — confirm field changes propagate and no plain properties are used for game-critical state.
- Wire matchmaking and metadata filters.
- Add reconnection policy and timeout behavior.
- Checkpoint: Simulate a transient disconnect and confirm
allowReconnectionrestores session — verify the player is not ejected prematurely. - Verify full room behavior with local multi-client runs.
Quick Commands
Scaffold a Colyseus app
npm create colyseus-app@latest server
Expected result: runnable Colyseus project in server/.
Install and run with Bun
cd server && bun install && bun run src/index.ts
Expected result: server listening on configured port.
Run with Node scripts
cd server && npm install && npm run start
Expected result: room handlers and matchmaker initialized.
Evaluate this skill quality
sh skills/agentic-harness/skill-quality-auditor/scripts/evaluate.sh colyseus-multiplayer --json
Expected result: updated dimension score breakdown.
Lint this skill docs
bunx markdownlint-cli2 "skills/colyseus-multiplayer/**/*.md"
Expected result: no markdownlint violations.
Room Implementation Example
The following shows lifecycle hooks, Schema state, and reconnection handling together:
What ships with it
23 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.
- .audits/2026-02-21/analysis.md 8.1 KB
- .audits/2026-02-21/audit.json 145 B
- .audits/2026-02-21/remediation-plan.md 236 B
- .audits/2026-02-22/analysis.md 8.1 KB
- .audits/2026-02-22/audit.json 145 B
- .audits/2026-02-22/remediation-plan.md 236 B
- .audits/2026-02-23/analysis.md 8.2 KB
- .audits/2026-02-23/audit.json 147 B
- .audits/2026-02-23/remediation-plan.md 232 B
- .audits/2026-03-02/analysis.md 1.0 KB
- .audits/2026-03-02/audit.json 416 B
- .audits/2026-03-02/remediation-plan.md 2.3 KB
- .audits/latest 10 B
- .tessl-plugin/plugin.json 507 B
- CHANGELOG.md 1.2 KB
- evals/scenario-01.md 3.4 KB
- evals/scenario-02.md 3.5 KB
- evals/scenario-03.md 3.3 KB
- evals/scenario-04.md 3.4 KB
- evals/scenario-05.md 3.5 KB
- references/matchmaking-and-reconnection.md 836 B
- references/message-validation-and-security.md 847 B
- references/room-lifecycle-and-state.md 838 B
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.
- 9d ago First seen · 245 lines · 81 tokens per session scan A 302fb775f2a2
colyseus-multiplayer is a skill published in the GitHub repository pantheon-org/tekhne (10 stars, last pushed yesterday), licensed MIT. It adds 81 tokens to every session and 1,606 once invoked, about $0.0004 per session on Opus 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 2026-09-03.
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