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 skills add nikira-studio/agent-core --skill agent-core-coordinationgit clone --depth 1 https://github.com/nikira-studio/agent-coreWrote 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/nikira-studio/agent-core/agent-core-coordination)<a href="https://agentmods.dev/skills/nikira-studio/agent-core/agent-core-coordination"><img src="https://agentmods.dev/badge/skills/nikira-studio/agent-core/agent-core-coordination/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/nikira-studio/agent-core/agent-core-coordination"><img src="https://agentmods.dev/badge/skills/nikira-studio/agent-core/agent-core-coordination.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 | $0.00000 | $0.00075 |
| Opus 5.5 | $0.00000 | $0.00030 |
| Sonnet 5.5 | $0.00000 | $0.00015 |
| Haiku 4.5 | $0.00000 | $0.00007 |
Grade A, and why
agent-core-coordination 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.
What it actually says
Agent Core coordination
Start with workspace_sync for the workspace scope and reuse its execution ID. Search memory for stable project facts and decisions. Write activity updates while working. A fresh activity can return a bounded since_last_active fallback digest when the execution is not caught up; process it without treating it as complete history. Complete the activity with a short result when done.
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 Changed c784441b71d1
- 1mo ago First seen · 4 lines · 0 tokens per session scan A 819286091680
agent-core-coordination is a skill published in the GitHub repository nikira-studio/agent-core (0 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 75 tokens. 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 2026-09-07.
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