848fde9f59
Adds anonymous usage statistics (commands/tools used, languages indexed, connecting agents) with a strict, auditable allowlist. Never code, paths, file/symbol names, queries, or IPs. - src/telemetry/: zero-dep client — consent resolution (DO_NOT_TRACK > CODEGRAPH_TELEMETRY > stored choice > default-on), random machine UUID, in-memory counters → capped JSONL buffer → completed-day rollups; sync exit-append (survives process.exit) + opportunistic bounded sends; the first-run notice gates the first SEND, never local buffering, so the installer's consent toggle always precedes it. Off is off: no recording, no socket, buffered data deleted. - codegraph telemetry status|on|off; per-command counting via preAction hook. - MCP: tool counting after the reply is on the wire (session + proxy in-process fallback), agent attribution from initialize clientInfo, unref'd daemon flush interval. Zero hot-path cost, zero stdout. - Installer: visible default-on consent toggle (asked once, never re-asked), install/index/uninstall lifecycle events. - telemetry-worker/: public Cloudflare Worker behind telemetry.getcodegraph.com — allowlist validation, IP stripping, per-machine rate limit, forwards to PostHog as anonymous events. Ships nowhere with the npm package. - TELEMETRY.md (field-by-field contract) + README section + design doc. - 20 unit tests; suite-wide CODEGRAPH_TELEMETRY=0 guard so tests never pollute real telemetry. Full suite: 1448 passing. Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
88 lines
4.3 KiB
Markdown
88 lines
4.3 KiB
Markdown
# Telemetry
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CodeGraph collects a small set of **anonymous usage statistics** — which commands and
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tools get used, which languages get indexed, which agents drive usage — so we can tell
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which of the 20+ languages and 8 agent integrations deserve the most work. This page is
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the complete list of what is collected. If a field isn't on this page, it isn't collected;
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the ingest endpoint enforces this list as an allowlist and is itself
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[public, auditable code](telemetry-worker/) in this repository.
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## Turning it off
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Any of these works, permanently:
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```bash
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codegraph telemetry off # stores your choice (and deletes any unsent data)
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```
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```bash
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export CODEGRAPH_TELEMETRY=0 # per-shell / per-CI override
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export DO_NOT_TRACK=1 # the cross-tool standard — always honored
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```
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`codegraph telemetry status` shows the current state, what decided it, and your machine ID.
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The interactive installer (`codegraph install`) asks up front with a visible default-on
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toggle and never re-asks. If you never saw the installer (e.g. `npx` straight into `init`),
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a one-line notice is printed to stderr before the first time anything is sent.
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Off means off: when disabled, CodeGraph records nothing, opens no connection to the
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telemetry endpoint, and sends no "opted out" ping.
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## What is collected
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Every payload carries this envelope:
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| field | example | notes |
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|---|---|---|
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| `machine_id` | `b3a8c1…` | random UUID minted on first send — derived from nothing |
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| `codegraph_version` | `0.9.9` | |
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| `os` / `arch` | `darwin` / `arm64` | platform identifiers only |
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| `node_major` | `22` | major version only |
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| `ci` | `false` | whether the `CI` env var was set |
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| `schema_version` | `1` | bumped when this page changes |
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And one of four events:
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- **`install`** — when `codegraph install` configures agents: which agents
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(`["claude","cursor",…]`), global vs project-local, and whether it was a fresh install,
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an upgrade, or a re-run.
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- **`index`** — when a full index completes: the **language names** present (e.g.
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`["typescript","go"]`), the file count as a **coarse bucket** (`<100`, `100-1k`,
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`1k-10k`, `10k+`), the duration as a bucket (`<10s`, `10-60s`, `1-5m`, `5m+`), and the
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SQLite backend (`native`/`wasm`).
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- **`usage_rollup`** — one line per day per tool: the tool or CLI command **name** (e.g.
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`codegraph_explore`, `init`), how many times it ran, how many errored, and — for MCP
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tools — the connecting agent's name and version from the MCP handshake (e.g.
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`Claude Code 2.1`).
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- **`uninstall`** — when `codegraph uninstall`/`uninit` runs: which agents were removed.
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Usage is **aggregated locally into daily totals** before anything is sent — there is no
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per-call event stream, and nothing is sent in real time.
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## What is never collected
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- **No source code.** No file paths, file names, directory names, repository names or
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URLs, symbol names, search queries, or anything else derived from the contents of an
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indexed project.
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- **No IP addresses.** The ingest endpoint never reads, logs, or forwards the client IP,
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and IP discarding is enabled at the analytics backend on top of that. No geolocation.
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- **No fingerprinting.** The machine ID is a random UUID stored in
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`~/.codegraph/telemetry.json` — delete that file (or run `codegraph telemetry off`,
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then `on`) and the old ID is gone forever, with no way to reconnect it.
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- **No personal data.** No usernames, hostnames, emails, or environment variables.
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## How it travels
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Events POST to `telemetry.getcodegraph.com` — a first-party endpoint whose complete
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source lives in [`telemetry-worker/`](telemetry-worker/) in this repository. It validates
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every event and property against the allowlist above (anything else is dropped), strips
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IPs, rate-limits, and forwards to a managed analytics store (PostHog, US region) as
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anonymous events. Sends are fire-and-forget with a short timeout: offline or air-gapped
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machines buffer a bounded local file (256 KB cap) and never retry-loop, log errors, or
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slow a command down. Telemetry never adds latency to MCP tool calls — recording is an
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in-memory counter.
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The engineering contract behind all of this — including the rule that schema changes must
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update this page, the client, and the public endpoint in one PR — is in
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[`docs/design/telemetry.md`](docs/design/telemetry.md).
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