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

# Send signals

> Uploads a passive sensor batch as Parquet.

<CodeGroup>
  ```python Python theme={null}
  olira.send_signals(
      patient_id: str,
      sensor_type: SignalSensorType | str,
      source_device: str,
      records: list[dict] | None = None,
      parquet: bytes | None = None,
      schema_version: str | None = None,
      sample_rate_hz: float | None = None,
      units: dict[str, str] | None = None,
      timestamp_unit: str | None = None,
      device_timezone: str | None = None,
  ) -> SignalJobHandle
  ```

  ```csharp C# theme={null}
  client.SendSignals(
      string patientId,
      SignalSensorType | string sensorType,
      string sourceDevice,
      IReadOnlyList<dict>? records = null,
      bytes? parquet = null,
      string? schemaVersion = null,
      double? sampleRateHz = null,
      dict[string, string]? units = null,
      string? timestampUnit = null,
      string? deviceTimezone = null,
  )  // -> SignalJobHandle
  ```
</CodeGroup>

**Requires scope:** `sdk:event-log`

Supported today: accelerometer, gyroscope, gps (more sensors will follow). Provide either records= (list of dicts with ts + measurement fields; requires pip install olira\[signals]) or parquet= (pre-serialized bytes). The SDK hashes the payload and routes small bodies synchronously and larger bodies via a presigned upload. Returns a SignalJobHandle — call wait() or poll(). See the passive signals guide for absorb, features, and dedup policy.

## Parameters

<ParamField body="patient_id" type="str" required>
  Olira patient id that owns the series.
</ParamField>

<ParamField body="sensor_type" type="SignalSensorType | str" required>
  One of "accelerometer", "gyroscope", "gps".
</ParamField>

<ParamField body="source_device" type="str" required>
  Stable device id for the series (unique with patient + ts at the sink).
</ParamField>

<ParamField body="records" type="list[dict] | None">
  Measurement rows (each with ts plus sensor fields). Mutually exclusive with parquet=.
</ParamField>

<ParamField body="parquet" type="bytes | None">
  Pre-serialized Parquet bytes. Mutually exclusive with records=.
</ParamField>

<ParamField body="schema_version" type="str | None">
  Sensor schema id (e.g. accelerometer\@1). Defaults to latest for the sensor.
</ParamField>

<ParamField body="sample_rate_hz" type="float | None">
  Nominal device sample rate stored with the batch metadata.
</ParamField>

<ParamField body="units" type="dict[str, str] | None">
  Per-field source units; server converts to canonical units.
</ParamField>

<ParamField body="timestamp_unit" type="str | None">
  When ts is epoch-encoded: 's', 'ms', or 'us'.
</ParamField>

<ParamField body="device_timezone" type="str | None">
  IANA timezone name; retains original UTC offset at collection.
</ParamField>

## Returns

`SignalJobHandle` — Poll/wait handle; .job is the current SignalJob snapshot.

<ResponseField name="job_id" type="str">
  Ingestion job id.
</ResponseField>

<ResponseField name="job.status" type="SignalJobStatus">
  received | processing | done | partial | failed.
</ResponseField>

<ResponseField name="job.records_written" type="int">
  Rows written after absorb.
</ResponseField>

<ResponseField name="job.records_deduplicated" type="int">
  Overlap skips during absorb (first write wins).
</ResponseField>

<ResponseField name="job.deduplicated" type="bool">
  True when the upload was a content-hash no-op.
</ResponseField>

<Note>
  Guide: /send-data/passive-signals.
</Note>

<Note>
  On the bulk path, PUT Parquet bytes without the SDK Authorization header.
</Note>

## Raises

| Exception         | When                                                                                                                  |
| ----------------- | --------------------------------------------------------------------------------------------------------------------- |
| `AuthError`       | HTTP 401 or 403 — invalid API key or insufficient OAuth scope for this endpoint.                                      |
| `ValidationError` | HTTP 400, 404, or 422 — malformed JSON, unknown patient, or validation failure (message includes response excerpt).   |
| `ServerError`     | HTTP 409 (e.g. conflicting external identifier) or repeated 5xx after retries; includes status\_code when applicable. |
| `RateLimitError`  | HTTP 429 — rate limited; check retry\_after (seconds).                                                                |
| `NetworkError`    | Connection timeout, DNS failure, or read error after retries.                                                         |

<RequestExample>
  ```python Python theme={null}
  from datetime import datetime, timezone
  from olira import OliraClient

  client = OliraClient(api_key="YOUR_API_KEY")
  handle = client.send_signals(
      patient_id="8a4fde23-0f1b-4c2a-9d7e-b36c1a5f0e82",
      sensor_type="accelerometer",
      source_device="phone-imu-1",
      sample_rate_hz=60.0,
      records=[
          {"ts": datetime(2026, 7, 26, 12, 0, 0, tzinfo=timezone.utc), "x": 0.1, "y": 0.0, "z": 9.8},
      ],
  )
  job = handle.wait()
  ```

  ```csharp C# theme={null}
  using Olira;

  using var client = new OliraClient(apiKey: "YOUR_API_KEY");
  var handle = client.SendSignals(
      patientId: "8a4fde23-0f1b-4c2a-9d7e-b36c1a5f0e82",
      sensorType: "accelerometer",
      sourceDevice: "phone-imu-1",
      sampleRateHz: 60.0,
      records:
      [
          new Dictionary<string, object?>
          {
              ["ts"] = new DateTimeOffset(2026, 7, 26, 12, 0, 0, TimeSpan.Zero),
              ["x"] = 0.1,
              ["y"] = 0.0,
              ["z"] = 9.8,
          },
      ]);
  var job = handle.Wait();
  ```

  ```http HTTP theme={null}
  POST /v1/signals:batch?patient_id=8a4fde23-0f1b-4c2a-9d7e-b36c1a5f0e82&sensor_type=accelerometer&source_device=phone-imu-1
  Authorization: Bearer YOUR_API_KEY
  Content-Type: application/vnd.apache.parquet
  X-Content-SHA256: <sha256 of body>

  # Large payloads use a presigned upload URL — PUT without Authorization — then commit the manifest.
  ```
</RequestExample>

<ResponseExample>
  ```python 200 theme={null}
  SignalJob(
      job_id="sig-job-001",
      status="done",
      records_written=1,
      records_deduplicated=0,
  )
  ```

  ```json 401 theme={null}
  {
    "error": true,
    "status_code": 401,
    "error_type": "authentication_error",
    "message": "Could not validate credentials",
    "details": [
      {
        "type": "authentication_error",
        "message": "Could not validate credentials"
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```

  ```json 403 theme={null}
  {
    "error": true,
    "status_code": 403,
    "error_type": "authorization_error",
    "message": "Insufficient OAuth scope for this endpoint",
    "details": [
      {
        "type": "authorization_error",
        "message": "Insufficient OAuth scope for this endpoint"
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```

  ```json 404 theme={null}
  {
    "error": true,
    "status_code": 404,
    "error_type": "not_found_error",
    "message": "Patient not found",
    "details": [
      {
        "type": "not_found_error",
        "message": "Patient not found"
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```

  ```json 422 theme={null}
  {
    "error": true,
    "status_code": 422,
    "error_type": "validation_error",
    "message": "Request validation failed (1 error)",
    "details": [
      {
        "type": "missing",
        "message": "Field required",
        "field": "patient_id",
        "location": ["body", "patient_id"],
        "input_value": null
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```

  ```json 429 theme={null}
  {
    "error": true,
    "status_code": 429,
    "error_type": "server_error",
    "message": "Rate limit exceeded",
    "details": [
      {
        "type": "rate_limit",
        "message": "Too many requests; retry after backoff"
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```

  ```json 500 theme={null}
  {
    "error": true,
    "status_code": 500,
    "error_type": "internal_server_error",
    "message": "An internal server error occurred",
    "details": [
      {
        "type": "internal_server_error",
        "message": "An unexpected error occurred while processing your request"
      }
    ],
    "timestamp": "2026-05-06T12:00:00+00:00"
  }
  ```
</ResponseExample>