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 agentmods add skills/tomkrikorian/visionosagents/shareplay-developernpx skills add tomkrikorian/visionOSAgents --skill shareplay-developergit clone --depth 1 https://github.com/tomkrikorian/visionOSAgentsWrote 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/tomkrikorian/visionosagents/shareplay-developer)<a href="https://agentmods.dev/skills/tomkrikorian/visionosagents/shareplay-developer"><img src="https://agentmods.dev/badge/skills/tomkrikorian/visionosagents/shareplay-developer.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 | $0.00050 | $0.00674 |
| Opus 5 | $0.00025 | $0.00337 |
| Sonnet 5 | $0.00010 | $0.00135 |
| Haiku 4.5 | $0.00005 | $0.00067 |
Grade A, and why
shareplay-developer 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 5d 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 — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SharePlay Developer
Quick Start
- Decide whether this experience is launch-only co-location or shared state sync.
- Add the Group Activities capability and required entitlement before building SharePlay UI.
- Define one
GroupActivityper experience and keep the payload minimal andCodable. - Load the right reference only after you know the workflow.
- For spatial personas or immersive spaces, load
spatial-coordination.mdbefore joining.
Load References When
| Reference | When to Use |
|---|---|
activation-ui.md |
When wiring the SharePlay entry point or start button flow. |
activity-definition.md |
When defining the GroupActivity payload, metadata, or transfer representation. |
group-session-lifecycle.md |
When joining, leaving, observing, or presenting a GroupSession. |
messaging-journal.md |
When using GroupSessionMessenger, GroupSessionJournal, or late-joiner sync. |
shareplay-spatial-api.md |
When checking the official GroupActivities APIs for activation, association, session ownership, and spatial coordination. |
spatial-coordination.md |
When configuring SystemCoordinator, spatial templates, or group immersive-space behavior. |
visionos-immersive-space.md |
When implementing launch-only SharePlay for a visionOS immersive space. |
groupactivities-patterns.md |
When you need broader GroupActivities patterns or sample-backed examples. |
Workflow
- Define the activity and choose the activation surface.
- Observe and configure the session before joining.
- Add messaging or journal synchronization only if shared state is required.
- Configure spatial coordination when the experience shares an immersive space.
- Summarize the session lifecycle, sync model, and launch surface clearly.
What ships with it
12 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/openai.yaml 390 B
- assets/studio-meije-logo-small.png 4.2 KB
- assets/studio-meije-logo.png 42 KB
- references/activation-ui.md 2.2 KB
- references/activity-definition.md 547 B
- references/group-session-lifecycle.md 1.4 KB
- references/groupactivities-patterns.md 1.9 KB
- references/messaging-journal.md 427 B
- references/shareplay-spatial-api.md 788 B
- references/spatial-coordination.md 1.5 KB
- references/visionos-immersive-space.md 3.5 KB
- samples/groupactivities-samples.md 44 KB
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.
- 5d ago First seen · 65 lines · 50 tokens per session scan A ccbc9b586984
shareplay-developer is a skill published in the GitHub repository tomkrikorian/visionOSAgents (60 stars, last pushed 2mo ago), licensed MIT. It adds 50 tokens to every session and 674 once invoked, about $0.0003 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 2026-08-30.
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