---
title: "Check Lead Registration"
method: GET
path: "/api/v1/lead-lookup"
tags: ["lead-lookup"]
---

# Check Lead Registration

`GET /api/v1/lead-lookup`

Check if a caller is already registered as a lead in the workspace.

For inbound calls, automatically extracts the caller phone from call context.
If multiple leads share the same phone number, can use name for disambiguation.

## Query parameters

- `phone` string, nullable — Phone number (optional, will use call context if not provided)
- `name` string, nullable — Lead name for disambiguation (optional)
- `call_id` string, required — Call ID from context (auto-injected by Ultravox)

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/outcallerai/apis/fastapi.md) · [All operations](https://skmtc.net/outcallerai/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/outcallerai/fastapi/revisions/a57f684e7966/schema)