openflux 0.5.1

Open standard for AI agent telemetry. One schema across every framework.

OpenFlux

Find out where your Claude Code budget actually went this week.

The problem

Existing trackers say "you spent $200 this week." They don't say:

• which sessions cost the most and why
• how much of your input went to cache misses you paid full price for
• whether you're stuck in a loop calling the same tool with the same input
• whether you'll cross your daily budget at the rate you're going

If you've ever hit your weekly limit while a tracker said you were at 10%, that's why. OpenFlux runs locally, hooks into your Claude Code sessions, and gives you the breakdown.

Install

pip install openflux
openflux install claude-code

The install command writes lifecycle hooks into ~/.claude/settings.json, idempotent on re-run. From then on every Claude Code session is captured to ~/.openflux/traces.db. No data leaves your machine.

openflux serve         # dashboard at http://localhost:5173
openflux cost          # CLI: total spend, cache hit ratio, burn rate
openflux sessions      # CLI: per-session cost, sortable by cost / cache / time
openflux anomalies     # CLI: spikes, cache misses, error storms, agent loops
openflux budget set 10 # daily cap, $/day; check with `openflux budget check`

Cost forensics

The Waste tab in the dashboard answers the questions ccusage and CodeBurn don't:

• Cache savings. Total dollars saved by Anthropic's prompt caching versus what you'd have paid at full input rate. The headline number; on healthy usage this is tens or hundreds of dollars. (Cache hit ratio is shown alongside but stays near 100% on healthy traffic so it's mostly informational; the dollar amount is what to act on.)

• Uncached input cost per session. Dollars paid at full input rate, surfaced both in the dashboard and via openflux sessions --sort cache. The actionable "cache pain" metric: sessions paying real money on un-cached prefixes float to the top instead of getting buried by the saturated ratio.

• Burn rate. Daily spend over the window, projected to month-end at the current rate.

• Per-session cost. Sortable by cost, by cache pain, or by time. Useful for finding the one session that cost more than the other ten put together.

• Anomaly detection. Four classes, each tied to a real failure mode:

  • Cost spikes — sessions costing 3x+ the rolling average.
  • Cache misses — sessions with significant input tokens and 0% cache hits.
  • Error storms — 50%+ of tool calls failed in a session.
  • Agent loops — same tool called 4+ times consecutively with identical input.

  All four classes work for both live openflux install claude-code capture and openflux backfill databases (per-tool detail is reconstructed from the transcript's tool_use / tool_result blocks).

• Budget cap. Set a daily ceiling with openflux budget set <amount>. openflux budget check shows spent, remaining, percent used, and projected end-of-day spend at the current pace.

The same data is exposed at /api/insights, /api/insights/sessions, and /api/insights/anomalies if you want to hook a notifier or alert into it.

Sessions: did this session ship working code?

OpenFlux also captures the git diff and test result for each Claude Code session. Set OPENFLUX_TEST_CMD="pytest -q" (or your own command) and every session shows pass / fail next to the cost. The Sessions tab in the dashboard ranks rows by recency. Columns: outcome, cost, lines added/removed, files changed, tests, diff range, original task.

openflux outcomes              # CLI version of the Sessions tab
openflux outcomes --days 7

How it works

Claude Code hooks --> OpenFlux adapter --> SQLite (~/.openflux/traces.db)
                                            |
                                            +-> dashboard (openflux serve)
                                            +-> CLI (openflux cost / sessions / anomalies / budget / outcomes)
                                            +-> JSON or OTLP sinks (optional)

Captured per session: model, every tool call, token usage by message (input / output / cache-read / cache-creation), MCP tool registrations, files modified, git diff at start and end, test command exit code if OPENFLUX_TEST_CMD is set. SQLite with FTS5 for search; schema migrations are versioned and idempotent.

For Claude Code, cost is computed from billable_messages (deduplicated by Anthropic message.id so the same API call across resumed or forked transcripts is counted once). For other adapters it falls back to per-trace token aggregates.

Other dashboard tabs

openflux serve also gives you:

• Traces — sortable raw trace explorer, status / agent filters, full-text search via FTS5, click-through detail panel with overview / tools / sources / raw JSON tabs.
• Stats — token usage over time, traces per day, aggregate metrics. Light and dark mode.

CLI reference

# Cost forensics
openflux cost                            # spend total + cache + burn (last 7 days)
openflux cost --days 30
openflux sessions                        # per-session cost, most expensive first
openflux sessions --sort cache           # or sort by cache hit ratio
openflux anomalies                       # cost spikes, cache misses, error storms, loops
openflux budget set 10                   # set daily cap to $10/day
openflux budget check                    # status + EOD projection

# Outcomes
openflux outcomes                        # session-vs-test view (CLI)
openflux outcomes --days 7

# Trace explorer
openflux recent                          # last 10 traces
openflux recent --agent claude-code
openflux search "deploy script"          # full-text across captured content
openflux trace trc-a1b2c3d4e5f6          # one trace, full detail

# Plumbing
openflux serve                           # web dashboard
openflux install claude-code             # write lifecycle hooks
openflux install --list                  # other supported frameworks
openflux export > traces.json            # NDJSON dump
openflux backfill                        # import historical Claude Code transcripts
openflux forget --agent old-agent        # delete by agent
openflux prune --days 90                 # delete by age
openflux status                          # db path + counts

Other frameworks

Claude Code is the wedge. The Trace schema is framework-agnostic and OpenFlux ships adapters for the rest of the agent ecosystem (OpenAI Agents SDK, LangChain / LangGraph, Claude Agent SDK, AutoGen, CrewAI, Google ADK, Amazon Bedrock, MCP) so the same dashboard, sinks, and CLI work everywhere. Coverage table and per-framework setup live in docs/adapters.md.

Compared to other Claude Code tools

The space already has ccusage (cost reporting) and CodeBurn (per-tool waste grading). OpenFlux overlaps both but adds the per-session cache discipline view, the four-class anomaly detector, the daily budget cap with EOD projection, and the diff-vs-test outcome link.

See docs/comparison.md for the side-by-side, including when not to pick OpenFlux.

Configuration

All env vars, no config files.

Variable	Default	Purpose
OPENFLUX_DB_PATH	~/.openflux/traces.db	SQLite database location
OPENFLUX_TEST_CMD	unset	Shell command to run at session end. Exit 0 means tests_passed=true. Example: pytest -q
OPENFLUX_OTLP_ENDPOINT	http://localhost:4318	OTLP/HTTP endpoint for export
OPENFLUX_FIDELITY	full	full (raw content) or redacted (hash-only)
OPENFLUX_EXCLUDE_PATHS	*.env,*credentials*,...	Glob patterns to exclude from content storage

Schema

A Trace captures one complete unit of agent work:

• Identity: id, timestamp, agent, session_id, parent_id
• What happened: task, decision, status, correction
• Provenance: context given, searches run, sources read, tools called
• Metrics: token usage, duration, turn count, files modified
• Extensibility: tags, scope, metadata dict

Full schema definition in docs/schema.md.

Sinks

Sink	Description	Config
SQLite	Default. Zero-config, FTS5 search, schema migrations.	OPENFLUX_DB_PATH
OTLP	Raw HTTP POST to any OpenTelemetry collector. No SDK needed.	OPENFLUX_OTLP_ENDPOINT
JSON	NDJSON to stdout. Pipe to files, jq, or other tools.	--

Roadmap

• Mid-session budget alerts via PostToolUse hook (notify when crossing a $/session ceiling, before the session ends)
• Per-tool / per-MCP-server / per-subagent cost attribution within a session
• Week-over-week diff view (compare two date ranges to spot regressions)
• Cursor + aider adapters with the same outcome capture
• PR-merged correlation (mark sessions whose diff was merged in the public history)
• Webhook sink (POST traces to any URL)
• Trace retention policies (auto-prune by age or DB size)
• Multi-machine sync of traces.db

Development

git clone https://github.com/advitrocks9/openflux.git
cd openflux
uv sync --all-extras

uv run pytest tests/ -v          # tests
uv run ruff check src/ tests/    # lint
uv run ruff format src/ tests/   # format
uv run pyright src/              # type check

Frontend (only needed if modifying the dashboard):

cd frontend
npm install
npm run dev    # dev server on :5174, proxies API to :5173
npm run build  # builds to src/openflux/static/

License

MIT