Borrowing it
Nothing to install: this file belongs to AcKeskin/contexture. 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/AcKeskin/contexture/main/.github/instructions/openxr.instructions.mdgit clone --depth 1 https://github.com/AcKeskin/contextureWrote 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/ackeskin/contexture/openxr)<a href="https://agentmods.dev/instructions/ackeskin/contexture/openxr"><img src="https://agentmods.dev/badge/instructions/ackeskin/contexture/openxr/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/instructions/ackeskin/contexture/openxr"><img src="https://agentmods.dev/badge/instructions/ackeskin/contexture/openxr.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 | $0.02128 | $0.02128 |
| Opus 5.5 | $0.00851 | $0.00851 |
| Sonnet 5.5 | $0.00426 | $0.00426 |
| Haiku 4.5 | $0.00213 | $0.00213 |
Grade A, and why
contexture openxr.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 1mo 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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
openxr rules
Auto-loaded by Copilot when editing files matching
**. Generated fromarchitectural-rules/openxr/— do not hand-edit.
OpenXR extensions and portability
Call xrEnumerateInstanceExtensionProperties before constructing XrInstanceCreateInfo::enabledExtensionNames. Never pass extension names that have not been confirmed present; xrCreateInstance will return XR_ERROR_EXTENSION_NOT_PRESENT and fail. (OpenXR: xrEnumerateInstanceExtensionProperties, XrInstanceCreateInfo, XR_ERROR_EXTENSION_NOT_PRESENT)
Partition extensions into required (app cannot function without them — abort if absent) and optional (enhanced experience — feature-gate at runtime). Document this split explicitly in the extension query phase. This is the primary portability seam across runtimes. (OpenXR: xrEnumerateInstanceExtensionProperties)
Do not call functions or use structures from an optional extension unless that extension was successfully enabled. Extension functions obtained via xrGetInstanceProcAddr are null when the extension is absent; calling them is undefined behaviour. (OpenXR: xrGetInstanceProcAddr)
Load all extension function pointers via xrGetInstanceProcAddr after instance creation. Do not link extension entry points statically where the loader may not expose them. (OpenXR: xrGetInstanceProcAddr)
Enumerate API layers with xrEnumerateApiLayerProperties in debug/development builds; enable validation layer (XR_APILAYER_LUNARG_core_validation) when available. Never hard-enable a layer in release builds — the layer may be absent on end-user machines and will cause instance creation failure. (OpenXR: xrEnumerateApiLayerProperties, XrInstanceCreateInfo::enabledApiLayerNames)
Check the XrResult of every OpenXR call. Many functions return XR_SUCCESS for the normal case but XR_SESSION_LOSS_PENDING or XR_ERROR_* for recoverable or fatal conditions. Ignoring results silently corrupts frame loop state. Use XR_SUCCEEDED(result) for coarse checks; match specific codes for recoverable paths. (OpenXR: XrResult, XR_SUCCEEDED, XR_SESSION_LOSS_PENDING)
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.
- 1mo ago First seen · 72 lines · 2,128 tokens per session scan A 5526651fd4a3
contexture openxr.instructions.md is an instructions file published in the GitHub repository AcKeskin/contexture (2 stars, last pushed 2mo ago), licensed MIT. It adds 2,128 tokens to every session, about $0.0085 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 2026-08-31.
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