Skillget

atifact

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Guvenlik Denetimi
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SUMMARY

Turn HAR files, Claude Code, Copilot CLI, and Codex CLI logs into standardized ATIF v1.7 trajectory JSON — ready for debugging, visualization, fine-tuning, and RL pipelines.

README.md

atifact

skills.sh

Convert agent logs to ATIF trajectories. One command. Zero dependencies.

Turn HAR files, Claude Code logs, Copilot CLI logs, and Codex CLI logs into standardized ATIF v1.7 trajectory JSON — ready for debugging, visualization, fine-tuning, and RL pipelines.

A terminal session on a macOS desktop showing the atifact CLI tool in action. Two commands are displayed against a dark background. The first command runs: atifact copilot-cli-subagent.jsonl — the output shows: Detecting input format..., Detected: Copilot CLI logs (JSONL), Parsing copilot-cli-jsonl..., followed by two Wrote lines confirming trajectory files were saved, and a summary: Done. 3 steps, 2 agent turns, 1 subagent trajectories. The second command runs: cat copilot-cli-subagent.jsonl.trajectory.json — showing a JSON object with fields including schema_version: ATIF-v1.7, session_id: session-subagent-001, an agent block with name: copilot-cli, version: 1.0.0, model_name: claude-opus-4.6-1m, and a steps array beginning with step_id: 1, timestamp: 2026-03-25T16:29:11.000Z, source: user, message: Explore the project structure. The status bar at the bottom shows version v24.15.0, the file path, branch main, and a change count of +137. The overall tone is functional and developer-focused.

Use with AI agents

Give your AI coding agent the atifact skill so it can extract trajectories on your behalf:

npx skills add waldekmastykarz/atifact

Once installed, ask your agent to "extract the trajectory from this HAR file", "convert Claude Code logs to ATIF", "convert Copilot CLI logs", or "convert Codex CLI logs" and it will handle the rest.

Install

npm install -g atifact

Quick start

# Convert a HAR file (auto-detected)
atifact session.har

# Convert Claude Code logs
atifact claude-log.jsonl

# Convert Copilot CLI logs
atifact copilot-session.jsonl

# Convert Codex CLI logs
atifact codex-session.jsonl

# Pipe to stdout (returns JSON array of trajectories)
atifact session.har --json | jq '.steps | length'

Output: <input>.trajectory.json in ATIF v1.7 format. Copilot CLI and Codex CLI logs with subagents produce additional <input>.trajectory.<name>.json files.

--json mode outputs a single trajectory with subagents embedded in the subagent_trajectories array to stdout with no files written.

Supported inputs

Format Source Flag
HAR OpenAI Chat Completions API, OpenAI Responses API, Anthropic Messages API har
JSONL Claude Code CLI session logs claude-code-jsonl
JSONL Copilot CLI session logs copilot-cli-jsonl
JSONL Codex CLI exec --json logs codex-cli-jsonl

Format is auto-detected from file contents (not extension). Force it with -f:

atifact myfile.log -f claude-code-jsonl
atifact myfile.log -f copilot-cli-jsonl
atifact myfile.log -f codex-cli-jsonl

Usage

atifact <input-file> [options]
Option Description
-o, --output <prefix> Output path prefix (default: input file path). Main: <prefix>.trajectory.json, subagents: <prefix>.trajectory.<name>.json
-f, --format <fmt> Force input format: har, claude-code-jsonl, copilot-cli-jsonl, codex-cli-jsonl
--json Write trajectory to stdout with subagents embedded (no files written)
-q, --quiet Suppress progress messages
-h, --help Show help
--version Print version

Exit codes

Code Meaning
0 Success
1 Runtime error (parse failure, I/O error)
2 Invalid usage (bad arguments, missing file)

Output format

atifact produces ATIF v1.7 JSON with:

  • Steps — user messages, agent responses, tool calls, and observations
  • Metrics — token counts, costs, cached tokens per step
  • Tool calls — structured function name + arguments with observation results
  • Subagent trajectories — Copilot CLI and Codex CLI subagents produce separate trajectory files linked via subagent_trajectory_ref with trajectory_id resolution; --json mode embeds them in subagent_trajectories
  • Final metrics — aggregated totals across the trajectory
  • All timestamps preserved as ISO 8601 from source data
  • Null/undefined fields excluded for compact output

Examples

HAR → trajectory

atifact recording.har -o my-trajectory
# Writes: my-trajectory.trajectory.json

Claude Code → trajectory, piped

atifact ~/.claude/projects/*/sessions/*.jsonl --json --quiet > trajectory.json

Copilot CLI → trajectory with subagents

atifact copilot-session.jsonl
# Writes: copilot-session.jsonl.trajectory.json
# Writes: copilot-session.jsonl.trajectory.<subagent-name>.json (per subagent)

Codex CLI → trajectory

atifact codex-session.jsonl
# Writes: codex-session.jsonl.trajectory.json

Count agent steps

atifact session.har --json | jq '[.steps[] | select(.source == "agent")] | length'

Requirements

  • Node.js 22+

License

MIT

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