session-log

session-log is a skill for Claude Code from Felpix-Studios/social-science-research. It costs 27 tokens per session (525 once invoked), scanned A, original, MIT.

A skill for creating or updating a session log that records project decisions, changes, progress, and status.

In plain words
What is it for?
Use it to start a new log or append updates to the latest log in the project's quality_reports/session_logs directory.
Why use it?
It keeps a durable record of what happened during a work session, including relevant plans and recent commits.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the social-science-research plugin — 13 skills, 9 agents, 3 hooks shipped together

Good fit Use it to start a new log or append updates to the latest log in the project's quality_reports/session_logs directory.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add Felpix-Studios/social-science-research
Claude Code
/plugin install social-science-research

Made for: Claude Code.

Or install social-science-research, the plugin that ships this one along with the rest of its 13 skills, 9 agents, 3 hooks.

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 session-log

README.md
[![agentmods](https://agentmods.dev/badge/skills/felpix-studios/social-science-research/session-log/github.svg)](https://agentmods.dev/skills/felpix-studios/social-science-research/session-log)
Your own site
<a href="https://agentmods.dev/skills/felpix-studios/social-science-research/session-log"><img src="https://agentmods.dev/badge/skills/felpix-studios/social-science-research/session-log/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 session-log

Your own site · 80×15
<a href="https://agentmods.dev/skills/felpix-studios/social-science-research/session-log"><img src="https://agentmods.dev/badge/skills/felpix-studios/social-science-research/session-log.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 525 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 $0.00027 $0.00525
Opus 5 $0.00014 $0.00262
Sonnet 5 $0.00005 $0.00105
Haiku 4.5 $0.00003 $0.00052

Measured 9d ago against content hash 1853780364ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

session-log 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 9d 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/session-log/SKILL.md · 48 lines

What it actually says

Session Log

Create or update a session log to capture decisions, changes, and progress.

Input: $ARGUMENTScreate for a new log, update to append to the most recent log, or a description of what to log.

Step 1: Determine Mode

  • If $ARGUMENTS is create or no session log exists in quality_reports/session_logs/Create mode
  • Otherwise → Update mode

Step 2: Create Mode

  1. Read the most recent plan from quality_reports/plans/ (if any) to auto-populate Objective
  2. Run git log --oneline -10 to see recent commits
  3. Read the format template via Bash: cat "${CLAUDE_PLUGIN_ROOT}/skills/session-log/assets/session-log.md" (templates ship inside the plugin and are not copied into the project)
  4. Save to quality_reports/session_logs/YYYY-MM-DD_short-description.md
  5. Populate:
    • Objective: from plan or $ARGUMENTS
    • Status: IN PROGRESS
    • Design Decisions: from plan or argument (prefix each with Decision:)
    • Changes Made: from recent git log if relevant

Tell the user the log was created and where.

Step 3: Update Mode

  1. Read the most recent session log in quality_reports/session_logs/
  2. Run git diff --stat and git log --oneline -5 to see what changed since last update
  3. Append new entries to the appropriate sections:
    • Changes Made: new files modified (from git diff)
    • Design Decisions: if $ARGUMENTS contains decision text, add as Decision: [text]
    • Incremental Work Log: add timestamped entry for current work
  4. If all planned work is complete, update Status to COMPLETED

Tell the user what was added to the log.

Files

What ships with it

1 file 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.

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. 9d ago First seen · 48 lines · 27 tokens per session scan A 1853780364ce

Subscribe to this mod's changes

session-log is a skill published in the GitHub repository Felpix-Studios/social-science-research (8 stars, last pushed 2mo ago), licensed MIT. It adds 27 tokens to every session and 525 once invoked, about $0.0001 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 2026-08-31.

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