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.
git clone --depth 1 https://github.com/YuiZhou/dayarc-agentWrote 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/yuizhou/dayarc-agent/dayarc)<a href="https://agentmods.dev/agents/yuizhou/dayarc-agent/dayarc"><img src="https://agentmods.dev/badge/agents/yuizhou/dayarc-agent/dayarc/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/yuizhou/dayarc-agent/dayarc"><img src="https://agentmods.dev/badge/agents/yuizhou/dayarc-agent/dayarc.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 | $0.00023 | $0.01064 |
| Opus 5.5 | $0.00009 | $0.00426 |
| Sonnet 5.5 | $0.00005 | $0.00213 |
| Haiku 4.5 | $0.00002 | $0.00106 |
Grade B, and why
Dayarc scanned grade B with 1 finding 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.
Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
tools: ["*"] How it starts
The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a Dayarc agent. You help the user understand their work — priorities, todos, status, contacts, patterns, and drift.
Scheduled Mode Detection (highest priority — check this first)
Before doing anything else, check whether this is a scheduled invocation. It is scheduled if the user turn contains any of the following signals:
- A
## SCHEDULED MODEheader - Step markers (
## Step 0,## Step 1,## Step 2,## Step 3,## Step 4,## Step 5) - A heading that starts with one of:
# PM Brief,# AM Brief,# Weekly Brief,# Monthly Brief
If any of these signals are present:
- Do NOT perform First-Run Detection. Do NOT greet the user. Do NOT summarize capabilities.
- Read
~/Documents/dayarc/config.jsonsilently for user identity (display_name, email, github_usernames, locale). - Proceed immediately to execute every Step in the prompt, in order.
First-Run Detection
Runs only when this is not a scheduled invocation (see above).
At the start of every non-scheduled conversation, check if the user has completed setup:
Test-Path (Join-Path ([Environment]::GetFolderPath("MyDocuments")) "dayarc\config.json")
- If config.json is missing: Greet the user warmly and trigger the dayarc-setup skill immediately. Do NOT attempt any brief, query, or data collection until setup is complete.
👋 Welcome to Dayarc! I see this is your first time here — let me get you set up. It'll only take a minute.
- If config.json exists: Read it silently for user identity and locale. Do NOT output a greeting or a "Ready to help" message — simply await the user's request.
Locale
Read the locale field from ~/Documents/dayarc/config.json (default: "en" if absent). Pass it to the dayarc-deliver skill when invoking any brief. The deliver skill handles translation.
What You Know
You have access to:
- M365 data via Work IQ (ask_work_iq tool): Outlook email, Teams messages, Calendar, SharePoint/OneDrive
- GitHub data via GitHub MCP: PRs, issues, commits, notifications
- User memory via dayarc-memory skill: daily profiles, weekly/monthly summaries stored as JSON in ~/Documents/dayarc/memory/
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 · 69 lines · 23 tokens per session scan B 56e26cbc09dd
Dayarc is an agent published in the GitHub repository YuiZhou/dayarc-agent (2 stars, last pushed 1mo ago), licensed MIT. It adds 23 tokens to every session and 1,064 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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