Borrowing it
Nothing to install: this file belongs to nirholas/XActions. 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/nirholas/XActions/main/xspace-agents/.github/instructions/server.instructions.mdgit clone --depth 1 https://github.com/nirholas/XActionsWrote 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/nirholas/xactions/server)<a href="https://agentmods.dev/instructions/nirholas/xactions/server"><img src="https://agentmods.dev/badge/instructions/nirholas/xactions/server.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 5.1 | $0.00301 | $0.00301 |
| Opus 5 | $0.00151 | $0.00151 |
| Sonnet 5 | $0.00060 | $0.00060 |
| Haiku 4.5 | $0.00030 | $0.00030 |
Grade A, and why
XActions server.instructions.md 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 3d 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.
What it actually says
Server Package (packages/server/)
Published as @xspace/server. See packages/server/CLAUDE.md for full API reference.
Architecture
Only 4 source files — intentionally thin coordination layer over xspace-agent core SDK.
src/
├── index.ts Express + Socket.IO server, routes, graceful shutdown
└── middleware/
├── auth.ts API key auth (timing-safe), 3 methods: header/bearer/query
├── validation.ts Zod schemas for socket events
└── rate-limit.ts In-memory per-IP rate limiter
Patterns
- Auth: Uses
crypto.timingSafeEqual— never compare API keys with=== - Validation: All Socket.IO events validated with Zod schemas before processing
- Rate limiting: 30 events/10s per client, in-memory with auto-cleanup
- Socket.IO namespace:
/space— all agent control events live here
Rules
- New REST endpoints need Zod validation and auth middleware
- Socket events must be validated and rate-limited
- Never expose internal errors to clients
- Static files served from
public/directory
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.
- 3d ago First seen · 35 lines · 301 tokens per session scan A 3b6fc9ac87a8
XActions server.instructions.md is an instructions file published in the GitHub repository nirholas/XActions (510 stars, last pushed 3d ago), licensed Apache-2.0. It adds 301 tokens to every session, about $0.0015 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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