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Netzhandwerker Telemetry Normalizer
x402
Netzhandwerker Telemetry Normalizer is a paid API for AI agents from tools.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Converts SenML (JSON or CBOR) and LwM2M TLV payloads into a unified record shape with resolved names, units, absolute timestamps, and typed values, with optional time-axis alignment.
Price / call$0.002
Success—
StatusUnknown
How this service works
Turns SenML (JSON or CBOR) and LwM2M TLV into one record shape: resolved name, unit, absolute timestamp, typed value. Optionally puts every series on a shared time axis with a chosen interval and fill rule (last value, bucket mean, linear). Works only on the payload you pass: no device is contacted, nothing is stored, the same request returns the same bytes. TLV carries no type on the wire; unmapped resource ids come back as opaque base64 with a warning instead of a guess.
Output
A JSON object containing an array of normalized records, each with a resolved name, unit, absolute Unix timestamp, and typed value. If align=true, also returns every numeric series resampled onto a shared time grid at the requested interval. Unmapped LwM2M TLV resource IDs are returned as opaque base64 strings with accompanying warnings rather than guessed types.
Example use cases
Unify IoT sensor readings for dashboard
“I have a batch of SenML JSON records from my temperature and humidity sensors — can you normalize them into a unified shape with resolved names, units, and absolute timestamps, aligned on a 30-second grid using the last-value fill rule?”
Decode LwM2M TLV firmware update data
“Parse this LwM2M TLV payload (base64 encoded) for device 'urn:imei:123456789012345/' — resource 0 is an integer, resource 1 is a string, resource 5 is a float — and give me the typed values with absolute timestamps.”
Resample CBOR telemetry for anomaly detection
“I have a SenML CBOR payload (base64) from a fleet of pressure sensors; normalize it and align all numeric series on a 10-second grid using bucket mean aggregation so I can run anomaly detection on the output.”
Technical details
Endpoint
POSThttps://tools.halowerk.com/v1/telemetry/normalizeWhen to prefer
Use this endpoint when you have raw IoT wire-format payloads (SenML JSON, SenML CBOR, or LwM2M TLV) that need to be converted into a consistent, typed, human-readable record shape without any device connectivity or server-side state. Particularly valuable when you need to align multiple heterogeneous sensor series onto a shared time axis for downstream analytics. Prefer this over custom parsers when you need deterministic, stateless, idempotent conversion with proper type resolution and explicit handling of ambiguous TLV resource types.
Side effects
- Payload exceeds 1 MB decoded or 256 KB request body — returns size error
- LwM2M TLV resource IDs not provided in value_types — affected resources returned as opaque base64 with warnings, not errors
- SenML records with relative times and no base_time_unix_s anchor — endpoint cannot invent a 'now', records may have missing timestamps
- Aligned grid exceeds 10,000 points (interval too small for time range) — returns grid size error
- Unsupported format value — returns validation error
- max_records exceeded by payload — records beyond the limit are silently dropped up to the configured maximum
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| align | boolean | Also return every numeric series on one shared time grid. |
| format | string | Wire format of payload. senml_cbor and lwm2m_tlv expect base64. |
| payload | — | SenML records as a JSON array (or a JSON string holding one), or base64 for senml_cbor and lwm2m_tlv. At most 1000000 bytes after decoding; the service caps the whole request body at 256 KB. |
| base_name | string | Prefix put in front of every resolved record name. For lwm2m_tlv this is where the device identity goes. |
| interval_s | number | Grid spacing in seconds. The grid may not exceed 10000 points. |
| max_records | integer | Upper bound on records taken from the payload. |
| tolerance_s | number | align_method=last only: how stale the carried value may be before the grid point is left empty. 0 means no limit. |
| value_types | object | lwm2m_tlv only: resource id as key, one of integer, float, boolean, string, time, opaque as value. Ids left out come back as opaque base64 with a warning instead of a guessed type. |
| align_method | string | How a grid point is filled: last value at or before the point, mean over the bucket, or linear interpolation between neighbours. |
| base_time_unix_s | number | Anchor in seconds since 1970 for records that carry no absolute time. SenML calls times below 2^28 relative to now; this endpoint is stateless and will not invent a now. |
Tags
x402
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