start-day

start-day is a skill for Claude Code, Codex from tomzx/agents. It costs 48 tokens per session (825 once invoked), scanned A, original, MIT.

A daily kickoff workflow that turns yesterday’s plans, goals, and notes into a focused plan for today.

In plain words
What is it for?
Use it to choose the day’s main outcomes, plan the first focus block, and prepare a short start-of-day note.
Why use it?
It helps you start with clear priorities and surface blockers before spending time on deep work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to choose the day’s main outcomes, plan the first focus block, and prepare a short start-of-day note.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tomzx/agents/start-day
Install

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.

Any agent
npx skills add tomzx/agents --skill start-day
Clone the repo
git clone --depth 1 https://github.com/tomzx/agents

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for start-day

README.md
[![agentmods](https://agentmods.dev/badge/skills/tomzx/agents/start-day/github.svg)](https://agentmods.dev/skills/tomzx/agents/start-day)
Your own site
<a href="https://agentmods.dev/skills/tomzx/agents/start-day"><img src="https://agentmods.dev/badge/skills/tomzx/agents/start-day/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.

agentmods 80×15 button for start-day

Your own site · 80×15
<a href="https://agentmods.dev/skills/tomzx/agents/start-day"><img src="https://agentmods.dev/badge/skills/tomzx/agents/start-day.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 825 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00825
Opus 5.5 $0.00019 $0.00330
Sonnet 5.5 $0.00010 $0.00165
Haiku 4.5 $0.00005 $0.00082

Measured 1mo ago against content hash 00baab4018ac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

start-day 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.

skills/start-day/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

BASE_DIR=!~/.agents/scripts/get-env NOTES_DIR TODAY=!date +%Y-%m-%d YEAR=!date +%Y MONTH=!date +%m DAY=!date +%d

Start Day

Frames the day before deep work: confirm priorities, first focus block, and blockers to surface early.

Prerequisites

  • NOTES_DIR set (via ~/.agents/scripts/get-env NOTES_DIR)
  • Optional: {BASE_DIR}/goals.md, {BASE_DIR}/team-goals.md
  • Optional: {BASE_DIR}/{YEAR}/{MONTH}/{TODAY}.standup.md (from end-of-day-summary, written as "next workday" standup)
  • Optional: SEND_DAILY_SLACK set (via ~/.agents/scripts/get-env SEND_DAILY_SLACK; truthy values 1, true, yes enable Slack posting)

Steps

1. Gather context

Read if they exist:

  • {BASE_DIR}/{YEAR}/{MONTH}/{TODAY}.standup.md (today's planned bullets from yesterday's EOD)
  • {BASE_DIR}/goals.md and {BASE_DIR}/team-goals.md
  • {BASE_DIR}/{YEAR}/{MONTH}/ for yesterday's *.overall.md (same month folder; use calendar yesterday date) when you need continuity

2. Synthesize (in chat unless the user asks for a file)

Produce a short brief:

  • Top 3 outcomes for today (from standup + goals; resolve conflicts explicitly)
  • First 60 to 90 minutes (single concrete focus, no meeting multitasking)
  • Blockers or asks to send before others go heads-down
  • One thing to protect or decline if the day looks overloaded

If standup is missing, derive top 3 from goals and anything the user says is urgent.

3. Optional file output

If the user wants it persisted, write {BASE_DIR}/{YEAR}/{MONTH}/{TODAY}.start.md:

---
date: {TODAY}
---

# Start of day

## Top 3 outcomes
## First focus (60 to 90 min)
## Blockers or asks (early)
## Notes

Relationship to other skills

  • end-of-day-summary writes {TODAY}.standup.md the prior evening (as the next workday file). Start-day consumes that file when present.
  • Do not duplicate the GitHub or Slack pipelines from end-of-day-summary here.

Post update to Slack

As the final step, check whether SEND_DAILY_SLACK is set (via ~/.agents/scripts/get-env SEND_DAILY_SLACK). Only post when it resolves to a truthy value (1, true, yes). If unset or empty, skip this step and inform the user that the Slack update was skipped.

Read the full file on GitHub · 90 lines

Changes

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.

  1. 1mo ago First seen · 90 lines · 48 tokens per session scan A 00baab4018ac

Subscribe to this mod's changes

start-day is a skill published in the GitHub repository tomzx/agents (13 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 825 once invoked, about $0.0002 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 2026-09-03.

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