LangWatch (BYOK)

LangWatch (BYOK) — connector documentation

• MCP endpoint: https://byok-langwatch.connectorbay.com/mcp
• REST API: POST https://byok-langwatch.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-langwatch.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own LangWatch LangWatch project API key, sent in the X-Upstream-Key header of every request (never stored, logged or cached)
• Health: https://byok-langwatch.connectorbay.com/health · Tool schemas: https://byok-langwatch.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-langwatch · agent@connectorbay.com

What LangWatch (BYOK) is for

LangWatch (BYOK) lets an AI assistant read your own LangWatch data through the LangWatch API with a key you supply (LangWatch project API key). Read-only: 11 tools (search_traces, get_trace, list_datasets, list_dataset_entries, list_experiments, list_experiment_runs, list_annotations, list_simulation_runs, list_monitors, list_evaluators, list_prompts). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to app.langwatch.ai. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by LangWatch. LangWatch and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Which LangWatch traces had errors in the last day?"
• "Show LangWatch trace trace_abc in digest form"
• "Which datasets do I have in LangWatch?"
• "Show the first rows of the LangWatch dataset 'qa-set'"
• "Which LangWatch experiments have I run?"
• "How did the runs of LangWatch experiment 'prompt-v2' go?"

What it does

• search_traces: Search traces of the project in a time window by free text and/or a LangWatch filter such as status:error or has:annotation; page with scroll_id.
• get_trace: Get one trace by its id (or a unique prefix of at least 8 characters) as an AI-readable digest or full JSON.
• list_datasets: List the project's non-archived datasets with column types and record counts.
• list_dataset_entries: List the rows of one dataset (by slug) with paging.
• list_experiments: List experiments of the project with type, run count and last run time.
• list_experiment_runs: List the runs of one experiment (by slug) with timestamps, progress and cost and duration summaries.
• list_annotations: List human annotations (comments, thumbs and expected outputs) on traces of the project.
• list_simulation_runs: List agent simulation runs with status, cost, duration and the first messages of each conversation.
• list_monitors: List the online evaluation monitors configured for the project.
• list_evaluators: List the evaluators configured for the project.
• list_prompts: List the prompts managed in the project.

BYOK key

You bring your own LangWatch LangWatch project API key (https://app.langwatch.ai/settings/api-keys). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to app.langwatch.ai over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://langwatch.ai/docs/api-reference (the API this connector calls, with a BYOK key)

Live from the LangWatch API (app.langwatch.ai) with a BYOK key; documentation: https://langwatch.ai/docs/api-reference. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by LangWatch. LangWatch and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your LangWatch account.

Built for: Worldwide. Languages: English.

LangWatch (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What LangWatch (BYOK) is. LangWatch (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own LangWatch data: Read your LangWatch LLM traces, datasets, experiments, annotations, prompts and monitors with your own project API key. You bring your own LangWatch LangWatch project API key; the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one LangWatch call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to app.langwatch.ai, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If LangWatch rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What LangWatch receives. The request we make on your behalf, including the key and the arguments, under LangWatch's own terms and privacy policy. LangWatch acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer LangWatch gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your LangWatch data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. LangWatch (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at LangWatch at any time to end all access.

Children. LangWatch (BYOK) is a general-audience service operated by the adult using the assistant, under LangWatch's own age rules.

Changes. We will post changes here with a new effective date.

LangWatch (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the LangWatch (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. LangWatch (BYOK) provides: Read your LangWatch LLM traces, datasets, experiments, annotations, prompts and monitors with your own project API key. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own LangWatch credentials and only access data you are allowed to access. LangWatch's terms apply to your use of LangWatch; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by LangWatch. LangWatch and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data LangWatch returns, lightly trimmed; it may be incomplete, delayed or changed by LangWatch. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your LangWatch account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent LangWatch's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; LangWatch may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your LangWatch key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action LangWatch takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-langwatch

LangWatch (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-langwatch.connectorbay.com/mcp
• REST API: https://byok-langwatch.connectorbay.com/openapi.json
• Live status: https://byok-langwatch.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. LangWatch (BYOK) never asks for them.