Turn HAR Files, Claude Code, Copilot CLI, and Codex CLI Logs into ATIF

The Harbor Framework released atifact, a command-line tool that converts HAR files, Claude Code logs, Copilot CLI logs, and Codex CLI logs into standardized ATIF v1.7 trajectory JSON format with a single command and zero dependencies. The tool supports auto-detection of input formats and can output trajectories for debugging, visualization, fine-tuning, and reinforcement learning pipelines, with options for file output or JSON piping to stdout.

Convert agent logs to ATIF https://harborframework.com/docs/agents/trajectory-format trajectories. One command. Zero dependencies. Turn HAR files, Claude Code logs, Copilot CLI logs, and Codex CLI logs into standardized ATIF v1.7 https://github.com/harbor-framework/harbor/blob/main/rfcs/0001-trajectory-format.md trajectory JSON — ready for debugging, visualization, fine-tuning, and RL pipelines. 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. npm install -g atifact 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. | 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 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 | | Code | Meaning | |---|---| 0 | Success | 1 | Runtime error parse failure, I/O error | 2 | Invalid usage bad arguments, missing file | atifact produces ATIF v1.7 https://github.com/harbor-framework/harbor/blob/main/rfcs/0001-trajectory-format.md 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 atifact recording.har -o my-trajectory Writes: my-trajectory.trajectory.json atifact ~/.claude/projects/ /sessions/ .jsonl --json --quiet trajectory.json atifact copilot-session.jsonl Writes: copilot-session.jsonl.trajectory.json Writes: copilot-session.jsonl.trajectory.<subagent-name .json per subagent atifact codex-session.jsonl Writes: codex-session.jsonl.trajectory.json atifact session.har --json | jq ' .steps | select .source == "agent" | length' - Node.js 22+