Agent skill

Session Logs

Search and analyze your own Lemon session logs (older/parent conversations) using jq.

Install Session Logs

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install z80dev/lemon session-logs --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .claude/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .claude/skills/session-logs && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .claude/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install z80dev/lemon session-logs --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .agents/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .agents/skills/session-logs && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .agents/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install z80dev/lemon session-logs --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .cursor/skills/session-logs && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .cursor/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/z80dev/lemon.git --path apps/lemon_skills/priv/builtin_skills/session-logs

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install z80dev/lemon session-logs --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .gemini/skills/session-logs && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .gemini/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install z80dev/lemon session-logs

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .github/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .github/skills/session-logs && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .github/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add z80dev/lemon --skill session-logs -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install z80dev/lemon session-logs --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/z80dev/lemon.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/apps/lemon_skills/priv/builtin_skills/session-logs .opencode/skills/session-logs && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "session-logs" agent skill from https://github.com/z80dev/lemon/tree/main/apps/lemon_skills/priv/builtin_skills/session-logs into .opencode/skills/session-logs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-logs", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: session-logs
GitHub stars: 131
Token cost: ~949 tokens
SKILL.md length: 213 words
Files: 1
Skills in repo: 6
Repo updated: Sep 16, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Search and analyze your own Lemon session logs (older/parent conversations) using jq.

Backend & APIs work in your project
SKILL.md covers Trigger, Location, Structure and Common Queries, plus 2 more sections
Calls jq and rg

What it does

Session Logs is an agent skill from z80dev/lemon. Search and analyze your own Lemon session logs (older/parent conversations) using jq.

Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs. The repository describes itself as: BEAM-native platform for LLM agents: OTP-supervised per-run processes, pluggable engines and channels, contract-tested extension points, and a deterministic multi-agent sim arena. The licence is MIT.

When your agent uses it

Backend & APIs work in your project

Example prompts

“/session-logs”

What it can do on your machine

Read from SKILL.md and the folder at commit 899e215. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- jq
- rg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Session Logs loads about 949 tokens when it runs. Until then it costs about 25 tokens; SKILL.md has 213 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~25
When it runs · the whole SKILL.md, loaded when a task matches: ~949

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from z80dev/lemon at commit 899e215, republished under its MIT licence (© z80dev). 213 words, ~949 tokens.

Download SKILL.mdSave it as .claude/skills/session-logs/SKILL.md (or your agent's skills folder).

name: session-logs
description: Search and analyze your own Lemon session logs (older/parent conversations) using jq.

session-logs

Search your complete conversation history stored in Lemon session JSONL files. Use this when a user references older/parent conversations or asks what was said before.

Trigger

Use this skill when the user asks about prior chats, parent conversations, or historical context that isn't in current memory files.

Location

Session logs live under ~/.lemon/agent/sessions/ and are organized by encoded working directory name:

<encoded-cwd>/*.jsonl - Full conversation transcript per session

For example: ~/.lemon/agent/sessions/--home-user-project--/2026...jsonl

The first line in each .jsonl is a session header with metadata.

Structure

Each .jsonl file contains messages with:

type: "session" (metadata header) or "message" (conversation entries)
timestamp: Epoch timestamp
message.role: "user", "assistant", etc.
message.content[]: Text, thinking, or tool calls (filter type=="text" for human-readable content)
message.usage.cost.total: Cost per response

Common Queries

List all sessions by date and size

bash

for f in ~/.lemon/agent/sessions/*/*.jsonl; do
  ts=$(jq -r 'select(.type=="session") | .timestamp' "$f")
  size=$(wc -c <"$f")
  started="$(date -r "$((ts / 1000))" '+%F %T' 2>/dev/null || printf 'ts=%s' "$ts")"
  echo "$started $size $(basename "$f")"
done | sort -r

Find sessions from a specific day

bash

for f in ~/.lemon/agent/sessions/*/*.jsonl; do
  ts=$(jq -r 'select(.type=="session") | .timestamp' "$f")
  day="$(date -r "$((ts / 1000))" '+%F' 2>/dev/null || true)"
  [[ "$day" == "2026-01-06" ]] && echo "$f"
done

Extract user messages from a session

bash

jq -r 'select(.type=="message" and .message.role == "user") | .message.content[]? | select(.type == "text") | .text' <session>.jsonl

Search for keyword in assistant responses

bash

jq -r 'select(.type=="message" and .message.role == "assistant") | .message.content[]? | select(.type == "text") | .text' <session>.jsonl | rg -i "keyword"

Get total cost for a session

bash

jq -s '[.[] | select(.type=="message") | .message.usage.cost.total // 0] | add' <session>.jsonl

Daily cost summary

bash

for f in ~/.lemon/agent/sessions/*/*.jsonl; do
  day="$(date -r "$(( $(jq -r 'select(.type=="session") | .timestamp' "$f") / 1000 ))" '+%F' 2>/dev/null || continue)"
  cost=$(jq -s '[.[] | select(.type=="message") | .message.usage.cost.total // 0] | add' "$f")
  echo "$day $cost"
done | awk '{a[$1]+=$2} END {for(d in a) print d, "$"a[d]}' | sort -r

Count messages and tokens in a session

bash

jq -s '{
  messages: length,
  user: [.[] | select(.type=="message" and .message.role == "user")] | length,
  assistant: [.[] | select(.type=="message" and .message.role == "assistant")] | length,
  first: .[0].timestamp,
  last: .[-1].timestamp
}' <session>.jsonl

Tool usage breakdown

bash

jq -r '.message.content[]? | select(.type == "toolCall") | .name' <session>.jsonl | sort | uniq -c | sort -rn

Search across ALL sessions for a phrase

bash

rg -l "phrase" ~/.lemon/agent/sessions/*/*.jsonl

Tips

Sessions are append-only JSONL (one JSON object per line)
Large sessions can be several MB - use head/tail for sampling
~/.lemon/agent/sessions is the session root in Lemon
No separate sessions.json index file exists for logs

Fast text-only hint (low noise)

bash

jq -r 'select(.type=="message") | .message.content[]? | select(.type=="text") | .text' ~/.lemon/agent/sessions/*/*.jsonl | rg 'keyword'

Files

Just SKILL.md in apps/lemon_skills/priv/builtin_skills/session-logs of z80dev/lemon.

Open the folder on GitHubat commit 899e215

Compare with similar skills

Session Logs next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Session Logs compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Session Logs this skillz80dev/lemon	131	—	~949	Automated safety check: Pass	MIT	21 days ago
Configuring Horizoncoollabsio/coolify	63k	4 repos	~898	Automated safety check: Pass	MIT	today
Nestjs Best Practicesrolling-scopes/rsschool-app	10k	6 repos	~1.2k	Automated safety check: Pass	MIT	3 days ago
Sub2API AdminWei-Shaw/sub2api	43k	1 repos	~717	Automated safety check: Pass	LGPL-3.0	today
Firecrawl Build Onboardingfirecrawl/firecrawl	189k	1 repos	~1.4k	Automated safety check: Notes	ISC	today
Obsidian BasesAtmosphere/atmosphere	3.8k	22 repos	~3.2k	Automated safety check: Pass	Apache-2.0	yesterday

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Questions about Session Logs

What does Session Logs do?

Search and analyze your own Lemon session logs (older/parent conversations) using jq. Session Logs is an agent skill from z80dev/lemon. Search and analyze your own Lemon session logs (older/parent conversations) using jq.

When should I use Session Logs?

Session Logs fits situations like: backend & APIs work in your project.

How do I install Session Logs in Claude Code?

Run `npx skills add z80dev/lemon --skill session-logs -a claude-code`. Or copy the skill folder (apps/lemon_skills/priv/builtin_skills/session-logs in z80dev/lemon) into .claude/skills/session-logs in your project. Claude Code loads it when a task matches its description.

How do I install Session Logs in Codex?

Run `npx skills add z80dev/lemon --skill session-logs -a codex`. Or copy the skill folder (apps/lemon_skills/priv/builtin_skills/session-logs in z80dev/lemon) into .agents/skills/session-logs in your project. Codex loads it when a task matches its description.

Can I use Session Logs in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add z80dev/lemon --skill session-logs -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/session-logs, .gemini/skills/session-logs, .github/skills/session-logs and .opencode/skills/session-logs in your project.

What does Session Logs need to run?

Going by SKILL.md and its folder, Session Logs needs the command-line tools its instructions call (jq and rg).

Does Session Logs access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Session Logs safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Session Logs use?

Session Logs is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Session Logs use?

About 949 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Session Logs?

Skills that share tags, products or a category with Session Logs: Configuring Horizon (coollabsio/coolify, 63k stars), Nestjs Best Practices (rolling-scopes/rsschool-app, 10k stars), Sub2API Admin (Wei-Shaw/sub2api, 43k stars) and Firecrawl Build Onboarding (firecrawl/firecrawl, 189k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Session Logs?

z80dev (a GitHub user) maintains it in z80dev/lemon, which has 131 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on September 16, 2026.

Source: z80dev/lemon on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Session Logs

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

session-logs

Trigger

Location

Structure

Common Queries

List all sessions by date and size

Find sessions from a specific day

Extract user messages from a session

Search for keyword in assistant responses

Get total cost for a session

Daily cost summary

Count messages and tokens in a session

Tool usage breakdown

Search across ALL sessions for a phrase

Tips

Fast text-only hint (low noise)

Files

Compare with similar skills

Similar skills

More from z80dev/lemon

Related

Questions about Session Logs