---

name: cc-history description: Reference documentation for analyzing Claude Code conversation history files

Claude Code History Analysis

Reference documentation for querying and analyzing Claude Code's conversation history. Use shell commands and jq to extract information from JSONL conversation files.

Directory Structure

Copy~/.claude/projects/{encoded-path}/
  |-- {session-uuid}.jsonl          # Main conversation
  |-- {session-uuid}/
      |-- subagents/
      |   |-- agent-{hash}.jsonl    # Subagent conversations
      |-- tool-results/             # Large tool outputs

Project Path Resolution

Convert working directory to project directory:

CopyPROJECT_DIR="~/.claude/projects/$(echo "$PWD" | sed 's|^/|-|; s|/\.|--|g; s|/|-|g')"

Encoding rules:

• Leading / becomes -
• Regular / becomes -
• /. (hidden directory) becomes --

Examples:

• /Users/bill/.claude -> -Users-bill--claude
• /Users/bill/git/myproject -> -Users-bill-git-myproject

Message Types

Message Structure

Each line in a JSONL file is a message object:

Copy{
  "type": "assistant",
  "uuid": "abc123",
  "parentUuid": "xyz789",
  "timestamp": "2025-01-15T19:39:16.000Z",
  "sessionId": "session-uuid",
  "message": {
    "role": "assistant",
    "content": [...],
    "usage": {
      "input_tokens": 20000,
      "output_tokens": 500,
      "cache_read_input_tokens": 15000,
      "cache_creation_input_tokens": 5000
    }
  }
}

Assistant message content blocks:

• type: "thinking" - Model thinking (has thinking field)
• type: "tool_use" - Tool invocation (has name, input fields)
• type: "text" - Text response (has text field)

Common Queries

Find Conversations

Copy# List by modification time (most recent first)
ls -lt "$PROJECT_DIR"/*.jsonl

# Find by date
ls -la "$PROJECT_DIR"/*.jsonl | grep "Jan 15"

# Find by content
grep -l "search term" "$PROJECT_DIR"/*.jsonl

Extract Messages

Copy# Get message by line number (1-indexed)
sed -n '42p' file.jsonl | jq .

# Get message by uuid
jq -c 'select(.uuid=="abc123")' file.jsonl

# All user messages
jq -c 'select(.type=="user")' file.jsonl

# All assistant messages
jq -c 'select(.type=="assistant")' file.jsonl

Tool Call Analysis

Copy# List all tool calls
jq -c 'select(.type=="assistant") | .message.content[]? | select(.type=="tool_use") | {name, input}' file.jsonl

# Count tool calls by name
jq -c 'select(.type=="assistant") | .message.content[]? | select(.type=="tool_use") | .name' file.jsonl | sort | uniq -c | sort -rn

# Find specific tool calls
jq -c 'select(.type=="assistant") | .message.content[]? | select(.type=="tool_use" and .name=="Bash")' file.jsonl

Skill Invocation Detection

Pattern: python3 -m skills\.([a-z_]+)\.

Copy# Find all skill invocations
grep -oE "python3 -m skills\.[a-z_]+" file.jsonl | sort -u

# Find conversations using a specific skill
grep -l "python3 -m skills\.planner\." "$PROJECT_DIR"/*.jsonl

Token Usage

Copy# Total tokens in conversation
jq -s '[.[].message.usage? | select(.) | .input_tokens + .output_tokens] | add' file.jsonl

# Token breakdown
jq -s '[.[].message.usage? | select(.)] | {
  input: (map(.input_tokens) | add),
  output: (map(.output_tokens) | add),
  cached: (map(.cache_read_input_tokens // 0) | add)
}' file.jsonl

# Token progression over time
jq -c 'select(.type=="assistant") | {ts: .timestamp[11:19], inp: .message.usage.input_tokens, out: .message.usage.output_tokens}' file.jsonl

Taxonomy Aggregation

Copy# Count messages by type
jq -s 'group_by(.type) | map({type: .[0].type, count: length})' file.jsonl

# Character count in user messages
jq -s '[.[] | select(.type=="user") | .message.content | length] | add' file.jsonl

# Thinking block character count
jq -s '[.[] | select(.type=="assistant") | .message.content[]? | select(.type=="thinking") | .thinking | length] | add' file.jsonl

Subagent Analysis

Copy# List subagents for a session
ls "${SESSION_DIR}/subagents/"

# Get subagent task description (first user message)
jq -c 'select(.type=="user") | .message.content' agent-*.jsonl | head -1

# Find Task tool calls in parent (these spawn subagents)
jq -c 'select(.type=="assistant") | .message.content[]? | select(.type=="tool_use" and .name=="Task") | .input' file.jsonl

Correlation

Subagent files (agent-{hash}.jsonl) don't link directly to parent Task calls. To correlate:

1. List all subagent files under {session}/subagents/
2. Read first user message of each for task description
3. Match description to Task tool_use blocks in parent conversation