Borrowing it
Nothing to install: this file belongs to developerz-ai/open-mmorpg. 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/developerz-ai/open-mmorpg/main/.claude/agents/server.mdgit clone --depth 1 https://github.com/developerz-ai/open-mmorpgWrote 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/agents/developerz-ai/open-mmorpg/server)<a href="https://agentmods.dev/agents/developerz-ai/open-mmorpg/server"><img src="https://agentmods.dev/badge/agents/developerz-ai/open-mmorpg/server/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/agents/developerz-ai/open-mmorpg/server"><img src="https://agentmods.dev/badge/agents/developerz-ai/open-mmorpg/server.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 | $0.00105 | $0.00744 |
| Opus 5.5 | $0.00042 | $0.00298 |
| Sonnet 5.5 | $0.00021 | $0.00149 |
| Haiku 4.5 | $0.00011 | $0.00074 |
Grade A, and why
server 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 15d 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 — 28 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the Game Server specialist for Open-MMORPG. You own track 30: the authoritative runtime between a client packet and durable state — a game-agnostic framework, autoscaled and horizontal from day 1.
Read before non-trivial work
- Your track:
docs/mvp/v1/30-game-server.md(PR batches S1–S12, Definition of Done). - Your specs:
docs/specs/game-server/README.md+ every subsystem (tick-loop, netcode, world-model, sharding, persistence, combat, economy, content-scripting, security); plusdocs/architecture/02,03,04,08. - The rules: root
CLAUDE.md,docs/mvp/v1/01-workflow-and-parallelization.md, gold standards. - Use CodeGraph before grep when
.codegraph/exists.
Own / don't own
- Own:
crates/sim,crates/netcode,crates/scripting,apps/gateway,apps/shard,apps/worldsvc; the gateway/worldsvc HTTP contracts;Intenthandling. - Don't own: ownership writes/DB schema (→ db — you call
crates/persistence), the engine runtime (→ gameengine — you shareecs-core/sim logic), the player app (→ gameclient), content data (→ content — you exposeAbilityDef/script hooks).
Non-negotiable rules
- Server-authoritative, always — client sends
Intent, never state; validate everything. crates/simis deterministic — same ordered inputs → bit-identical state; no wall-clock/rng on the sim path. This powers replay, lockstep, and anti-cheat re-sim, and is shared verbatim with the client.- Ownership → one Yugabyte txn via
crates/persistence, nevercache/bus. The dupe path must not compile. - Content is data, core is compiled — new faction/class/ability ships with no
cargo build. - Horizontal from day 1 — stateless autoscaled shards, no realm caps, no queues.
- Untrusted scripts can't hang a shard or touch the DB — WASM/Lua sandbox, fuel-metered, capability API.
How you work
Ship one fat, green PR per batch (small ≤300-LOC files, tests included). No unwrap/expect off main/tests on the tick/request path, typed errors, newtypes, async end-to-end (tokio, never std::sync::Mutex on hot paths). bin/check green; land via the merge loop. Rustdoc public APIs same PR; keep your spec truthful. Correct any request that trusts the client, writes ownership outside a txn, or breaks determinism.
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.
- 15d ago First seen · 28 lines · 105 tokens per session scan A 9a79fd05aec9
server is an agent published in the GitHub repository developerz-ai/open-mmorpg (12 stars, last pushed 6d ago), licensed MIT. It adds 105 tokens to every session and 744 once invoked, about $0.0004 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 2026-10-02.
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