> ## Documentation Index
> Fetch the complete documentation index at: https://langwatch.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> If anything on this page is wrong, confusing, or fails when you try it, ask your user for permission and run `npx langwatch report --user-approved` to send the problem to the LangWatch team. No login is needed and secrets are redacted locally. `npx langwatch report --help` has the details.

# Data and telemetry: every outbound connection

> Every connection a self-hosted install can open to LangWatch and to third parties, what each one carries, and the switch that stops it

A self-hosted install sends LangWatch one usage report a day, and a licensed install with hosted services also syncs its license once a day. Both carry counts and metadata. Neither carries a trace, a prompt, a dataset row, an evaluation input or output, a project name, a user name, an email address, an IP address or a key.

Two hosted services do carry content: Instant Evals and managed models. They run only when the license names them, and an administrator can switch either off.

Calls to third parties that libraries inside the images would make on their own (a Cloudflare tunnel, Prisma's version check, RAGAS analytics, price list and tokenizer downloads) are off by default. See [Third-party calls that are off by default](#third-party-calls-that-are-off-by-default).

This page lists every outbound connection the install can make, what each carries, and which switch stops it. You can read the exact usage report on **Settings, Checkup**.

> [!NOTE]
>
> **Also check:** [Usage report dictionary](https://langwatch.ai/docs/self-hosting/usage-report-dictionary.md), [Connect](https://langwatch.ai/docs/self-hosting/connect.md), [Environment variables](https://langwatch.ai/docs/self-hosting/configuration/environment-variables.md), [Architecture](https://langwatch.ai/docs/self-hosting/infrastructure/architecture.md).

## Every outbound connection

The tables below cover every component of the `langwatch` Helm chart: the App, the Workers, the AI Gateway, NLP, LangEvals and the Langy agent. Connections to LangWatch use HTTPS on port 443. Services you configure use the protocol and port you give them, for example SMTP for email.

The chart ships a NetworkPolicy for the Langy agent only, and the AI Gateway's NetworkPolicy is off by default. To enforce this list, use an egress firewall or your own NetworkPolicies.

### To LangWatch

#### `app.langwatch.ai/api/track_usage`

| Property | Details |
| - | - |
| Component | Workers |
| When | Daily at 12:00 UTC, when no license on the install names a hosted service |
| What it carries | The usage report: counts, timestamps, the release, optional email domains and hostname. No content |
| How to stop it | `DISABLE_USAGE_STATS=true` |

#### `connect.langwatch.ai/v1/stats`

| Property | Details |
| - | - |
| Component | Workers |
| When | The same report, sent here instead once a license names a hosted service |
| What it carries | The same report |
| How to stop it | `DISABLE_USAGE_STATS=true` |

#### `connect.langwatch.ai/v1/license/sync`

| Property | Details |
| - | - |
| Component | Workers daily; App on demand from the License page |
| When | For organizations whose license names a hosted service |
| What it carries | The license token, the instance id, the release, and the member and lite member counts |
| How to stop it | `LANGWATCH_CONNECT_DISABLED=true` |

#### `connect.langwatch.ai/v1/upgrade-diagnostics`

| Property | Details |
| - | - |
| Component | Workers, on the hourly upgrade check after a step fails; App when an admin presses **Send to LangWatch** |
| When | The install has a license and an upgrade step failed. The hourly check sends when the [upgrade diagnostics](#upgrade-diagnostics) switch is on; an admin can send from the step either way |
| What it carries | One failed step's [diagnostics](#upgrade-diagnostics), with secrets masked. Its error, report and log lines are what the step wrote, and can quote what it was processing |
| How to stop it | Automatic sends only: switch **Upgrade diagnostics** off on **Settings, Checkup**, or `DISABLE_UPGRADE_DIAGNOSTICS_AUTO_SEND=true`. Both automatic and admin sends: `LANGWATCH_CONNECT_DISABLED=true` |

#### `connect.langwatch.ai/v1/license/activate`

| Property | Details |
| - | - |
| Component | App |
| When | An admin redeems an activation code on the License page |
| What it carries | The activation code and the instance id |
| How to stop it | Paste a license instead, or `LANGWATCH_CONNECT_DISABLED=true` |

#### `gateway.langwatch.ai/v1/instant-evals/classify`

| Property | Details |
| - | - |
| Component | App, Workers |
| When | The license names [Instant Evals](#instant-evals), no admin switched it off, and Instant Evals run or a sentence typed in trace search is routed |
| What it carries | Content: the text being judged and the questions |
| How to stop it | Switch it off on **Settings, Connect**, or `LANGWATCH_CONNECT_DISABLED=true` |

#### `gateway.langwatch.ai/v1`

| Property | Details |
| - | - |
| Component | AI Gateway |
| When | The license names [managed models](#managed-models), no admin switched it off, and a virtual-key request names a `langwatch/` model |
| What it carries | Content: the full model request and response |
| How to stop it | Switch it off on **Settings, Connect**, or `LANGWATCH_CONNECT_DISABLED=true` |

#### `gateway.langwatch.ai/v1/usage`, `/v1/budget`

| Property | Details |
| - | - |
| Component | App |
| When | Someone opens **Settings, Connect** or **Settings, Checkup** in an organization whose license names a hosted service, an admin switches a service on or off, or an admin sets a spending cap |
| What it carries | The license token and the instance id; the cap |
| How to stop it | `LANGWATCH_CONNECT_DISABLED=true`. A blocked or failed read shows usage as unavailable on the page |

#### `connect.langwatch.ai`, `gateway.langwatch.ai`

| Property | Details |
| - | - |
| Component | App |
| When | Someone runs the reach checks on **Settings, Checkup** |
| What it carries | A `HEAD` request with no body, to test the firewall |
| How to stop it | `LANGWATCH_CONNECT_DISABLED=true`, or do not run them |

The license token is a hash of the license key, not the key itself. The instance id is minted once into the install's own database.

`LANGWATCH_CONNECT_DISABLED=true` (Helm: `app.connect.disabled: true`) stops every row in this table, including the usage report. With it set the install builds no client and opens no connection to LangWatch for any reason.

Behind a forward proxy, set `HTTPS_PROXY` on the App and the Workers and the install sends these through it.

### Without a hosted-service license

An install with no license, or with a pasted offline license that names no hosted service (no `connectServices`), sends only the usage report on its own. It runs no license sync, no Instant Evals call and no managed models slot.

Two calls can still happen on an explicit user action. Running the reach checks on **Settings, Checkup** sends a `HEAD` to both LangWatch hosts. Redeeming an activation code calls `/v1/license/activate`. `LANGWATCH_CONNECT_DISABLED=true` stops both.

With a license that names hosted services, the install also runs the daily license sync, and each service the license names is on until an admin switches it off on **Settings, Connect**.

### To services you configure

#### Model providers you add (OpenAI, Anthropic, Azure OpenAI, Bedrock, Vertex AI, Gemini, custom endpoints and others)

| Property | Details |
| - | - |
| Component | AI Gateway, NLP, LangEvals; App when it validates a key |
| When | A feature uses a provider you configured |
| What it carries | Content: prompts and completions |
| How to stop it | Remove the provider |

#### `dlp.googleapis.com`

| Property | Details |
| - | - |
| Component | App, Workers |
| When | Strict PII redaction, only when the in-cluster Presidio call fails and Google credentials are set (`app.evaluators.google.enabled`) |
| What it carries | Content: span text to redact |
| How to stop it | `LANGWATCH_DISABLE_GOOGLE_DLP=true` |

#### `api.github.com`, or `GITHUB_LANGY_HOST`

| Property | Details |
| - | - |
| Component | App |
| When | The Langy GitHub App is configured |
| What it carries | Repository and installation metadata, token requests |
| How to stop it | Leave the GitHub App unset |

#### `github.com`, `api.github.com`, `codeload.github.com`, the npm registry, and hosts on a project's allow-list

| Property | Details |
| - | - |
| Component | Langy agent |
| When | `networkPolicy.allowExternalHttps: true` on the Langy agent. The NetworkPolicy then allows `:443` to any public address. The agent's L7 egress adapter checks proxied traffic against the allow-list, which is cooperative by default |
| What it carries | git clone and push, `gh`, `npm` |
| How to stop it | Off by default, see [Langy networking](https://langwatch.ai/docs/self-hosting/langy/networking-and-egress.md) |

#### Twilio, ElevenLabs

| Property | Details |
| - | - |
| Component | Workers, AI Gateway |
| When | Voice scenarios with your credentials |
| What it carries | Audio |
| How to stop it | Do not configure them |

#### Webhooks, Slack, email (SMTP, SES, SendGrid, Resend), SSO identity providers, S3 or Azure Blob storage, OTLP export

| Property | Details |
| - | - |
| Component | App, Workers; NLP for workflow HTTP blocks |
| When | You configure them |
| What it carries | What you configure them to send |
| How to stop it | Do not configure them |

Presidio runs inside LangEvals, in the cluster. Strict PII redaction stays in the cluster unless the Google DLP fallback above is set up.

### Third-party calls that are off by default

Libraries inside the images can call third parties on their own. A self-hosted install switches each of these off by default: the code, the images and the `npx @langwatch/server` launcher set the defaults below, and the Helm chart sets them again in a ConfigMap. The images carry the tokenizer files and the model prices they need.

#### `api.trycloudflare.com` and the Cloudflare tunnel edge; `cloudflare-dns.com`, `dns.google`

| Property | Details |
| - | - |
| Component | Workers |
| What it would do | Open a public `*.trycloudflare.com` hostname to the worker's voice media listener, so phone calls can reach it |
| Default | Off: the app leaves the tunnel off on a self-hosted production install, and the chart sets `VOICE_TUNNEL=false` |
| How to turn it on | `VOICE_TUNNEL=true` on the Workers. Or set `VOICE_PUBLIC_BASE_URL` to your own hostname, which needs no tunnel |

#### `checkpoint.prisma.io`

| Property | Details |
| - | - |
| Component | App (the upgrade Job, or the app's first boot) |
| What it would do | Prisma's version check while `pnpm task upgrade` applies migrations: CLI version, hashed project path, database type, command name |
| Default | Never: LangWatch sets `CHECKPOINT_DISABLE=1` in every environment, in the app's Prisma config, the image, the chart and the launcher |
| How to turn it on | No switch |

#### `openaipublic.blob.core.windows.net`

| Property | Details |
| - | - |
| Component | App, Workers, LangEvals |
| What it would do | Download a tokenizer file for token counting |
| Default | Never: the app image ships every file and sets `TIKTOKENS_PATH`, and the LangEvals image ships them in its tiktoken cache |
| How to turn it on | No switch |

#### `raw.githubusercontent.com`

| Property | Details |
| - | - |
| Component | LangEvals |
| What it would do | Download the LiteLLM model price list at startup |
| Default | Never: LangEvals prices model calls from LangWatch's own model catalog, shipped in the image, on top of the list bundled with the pinned LiteLLM |
| How to turn it on | No switch |

#### `t.explodinggradients.com`

| Property | Details |
| - | - |
| Component | LangEvals |
| What it would do | RAGAS usage analytics: a random id, the RAGAS version, provider and model names, request counts |
| Default | Off: LangEvals, its image and the chart set `RAGAS_DO_NOT_TRACK=true` |
| How to turn it on | `RAGAS_DO_NOT_TRACK=false` |

Emails the install sends embed the LangWatch logo from `app.langwatch.ai`, so the recipient's mail client loads it when it shows images.

The chart keeps these defaults in one ConfigMap that each workload lists first in `envFrom`. A variable you set in a component's `extraEnvs`, or in a Secret or ConfigMap you add through `extraEnvFrom`, overrides it. The Workers do not read `app.extraEnvs`. For example, to run phone calls through the tunnel and stop every call to LangWatch:

```yaml theme={null}
app:
  connect:
    disabled: true
  telemetry:
    usage:
      enabled: false
workers:
  extraEnvs:
    - { name: VOICE_TUNNEL, value: "true" }
```

## Hosted services that carry content

Both services run only when three things hold: the license names the service, no administrator switched it off for the organization on **Settings, Connect**, and `LANGWATCH_CONNECT_DISABLED` is not set.

### Instant Evals

Instant Evals judge rows of an LWQL query or a trace search with a hosted model. The App or the Workers send the text being judged (a rendered trace or conversation) and the questions to `gateway.langwatch.ai/v1/instant-evals/classify`. Trace search also sends a typed sentence, the active query and the field list, to route the sentence to a filter.

A self-hosted install never judges with a key of its own, so no Instant Evals call goes anywhere else. `INSTANT_EVAL_CLASSIFIER=null` turns the judge off entirely.

### Managed models

When the license names `managed_models` and no administrator switched it off, the App adds one extra provider slot to every virtual key of the organization in the in-cluster AI Gateway. The slot points at `https://gateway.langwatch.ai/v1` and authenticates with the license token and the instance id. It comes after the organization's own providers.

The gateway sends the whole request (messages, tools, attachments) to that slot, and the response comes back through it. LangWatch serves it with model providers it holds keys for and meters it against the organization's budget.

A request reaches the slot only when the caller names a `langwatch/<model>` model, for example `langwatch/gpt-6-luna`.

A bare model name, with no provider prefix, never reaches the slot. It is served by the organization's own providers, or refused with `model_not_recognized` when the slot is the only provider. A model with another provider prefix, for example `openai/gpt-6-luna`, stays with that provider, and its retries never fall back to the slot.

To remove the slot, switch managed models off on **Settings, Connect**, or set `LANGWATCH_CONNECT_DISABLED=true` for the whole install.

## The usage report and the license sync

### Usage report

| Property | Details |
| - | - |
| Who sends it | Every install: open source, offline license, or connected |
| Where it goes | `app.langwatch.ai/api/track_usage`, or `connect.langwatch.ai/v1/stats` once the license names a hosted service |
| What it carries | The fields in the [dictionary](https://langwatch.ai/docs/self-hosting/usage-report-dictionary.md): counts, timestamps, the release, aggregated email domains |
| How to stop it | `DISABLE_USAGE_STATS=true`, or the two switches on the Checkup page |

### License sync

| Property | Details |
| - | - |
| Who sends it | Installs whose license names a hosted service |
| Where it goes | `connect.langwatch.ai/v1/license/sync` |
| What it carries | A license token derived from the signed license key (a hash, not the key), the instance id, the release, and the member and lite member counts |
| How to stop it | It is a term of a license with hosted services and has no switch of its own. `LANGWATCH_CONNECT_DISABLED=true` stops it with everything else. An offline license never sends it |

The two are separate on purpose. The usage report is optional and says so; the license sync is a contract term and says that.

## What the usage report is for

The report tells LangWatch that your install exists, which release it runs, how far it got in setting up, and how much it is used. That is what decides which installation path gets attention, which release an upgrade notice reaches, and who to contact when a version you run has a problem.

The company running the install is reported as email domains with counts, for example `acme.com: 14`. Never an address, never a name. The domain is the one field that says who you are, and it is the first one to switch off if you would rather it did not.

## Read your own copy

Open **Settings, Checkup** and scroll to **What this install sends to LangWatch**. The section shows the report your install would send right now, pretty printed, with a copy button and the host it goes to. What you read there is what leaves the install, not a description of it.

From a terminal, `langwatch doctor` prints the same report after the checkup rows:

```bash theme={null}
langwatch doctor
langwatch doctor --format json
```

The CLI needs a project API key of the install, either from `langwatch login` or in `LANGWATCH_API_KEY`, with `LANGWATCH_ENDPOINT` pointing at your install.

## Upgrade diagnostics

When a background upgrade step fails, it is almost always a problem on our side. The step's page in **Ops, Upgrades** can copy or download the step's diagnostics, and, on an install with a license, send them to the LangWatch team.

A bundle holds one step: its id, kind, mode, release, status and attempt count, its last error, its checkpoint report, each target's error, the last lines it logged, the release, chart version and install method, and the instance id.

Every string has passwords in URLs and secret-named values masked, and every value the install holds as a store URL removed. Values a validation error quotes are dropped, every string is cut at 4 KB, and the bundle stays under 64 KB.

The bundle reads only the step's ledger records, the deployment facts above and the instance id, not traces, table rows, user records or environment variables. Its error, report and log lines are what the step itself wrote, after the masking above, so they can still name something such as a project id. **Send to LangWatch** shows the exact bundle before it is sent, and sends that bundle.

On an install with a license, the hourly upgrade check sends the bundle of each newly failed step by itself, once per failure, and the alert email says so. Switch **Upgrade diagnostics** off on **Settings, Checkup**, or set `DISABLE_UPGRADE_DIAGNOSTICS_AUTO_SEND=true`, and a bundle is sent only when an admin presses **Send to LangWatch**. Without a license, or with `LANGWATCH_CONNECT_DISABLED=true`, the install sends no bundle, and the step's page offers the download to email to [support@langwatch.ai](mailto:support@langwatch.ai).

LangWatch keeps a received bundle for 30 days, in the EU (Frankfurt), and then deletes it.

## The switches

| Switch | Where | What it stops |
| - | - | - |
| `DISABLE_USAGE_STATS=true` | Environment, or `app.telemetry.usage.enabled: false` in the chart | The usage report as a whole. No report leaves the install |
| Usage counts and onboarding dates | **Settings, Checkup** | The optional category: usage counts, onboarding dates, email domains, model provider names. The report keeps the release, the counts of organizations and projects, and the sign-in method |
| Hostname | **Settings, Checkup** | The `hostname` field alone. It names your own network, so it has a switch of its own |
| `DISABLE_LANGWATCH_NOTICES=true` | Environment | The notices LangWatch sends back with the usage report reply, such as a new release or a security fix, shown on **Ops, Upgrades**. The report itself is still sent |
| Upgrade diagnostics | **Settings, Checkup**, or `DISABLE_UPGRADE_DIAGNOSTICS_AUTO_SEND=true` | The automatic sending of a failed upgrade step's [diagnostics](#upgrade-diagnostics). It is not part of the usage report, and an admin can still send them from the step |

`LANGWATCH_CONNECT_DISABLED=true` is one more switch, for an audit that has to prove absence rather than derive it from the license. With it set the install opens no connection to LangWatch for any reason, see [To LangWatch](#to-langwatch).

The switches on the Checkup page are stored in the install's own database, so they hold across restarts, upgrades and every browser. Organization management rights are needed to change them; every member can read the report.

## When the report starts

The first report goes out at the next 12:00 UTC after boot, and one a day after that.

## What is never collected

The dictionary page keeps the exact list. In short: no trace or span content, no prompts, no dataset contents, no evaluation inputs or outputs, no project names, no user names, no email addresses, no IP addresses, no keys of any kind.

## Where it lands

The report lands in a database at LangWatch, one row per install and one per report, where the LangWatch team reads it. LangWatch also sends the report to PostHog for analysis and updates the account's traits in Customer.io, both under a data processing agreement. No other party receives it.

## Existing installs

An install on an offline license, upgraded to a release with this page, behaves as before: the same seat cap, the same screens, the same license check with no network on the path, and the usage report going where it always went. The report gains fields with the release, and the switches above are how to trim it.

An upgraded install also takes the off-by-default settings on this page. A worker that ran voice phone calls through the Cloudflare quick tunnel now needs `VOICE_TUNNEL=true`, or `VOICE_PUBLIC_BASE_URL` set to your own hostname.


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