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Schema

Tag ID Format

Signal Tag identifier format and generation recommendations.

1 min read · Schema

Tag ID format

Signal Tags recommends a prefixed identifier style:

st_<opaque-id>

Examples:

st_01HZXK7M2N3P4Q5R6S7T8U9V
st_example_001

Rules

Prefix with st_.
Use globally unique opaque IDs.
Avoid embedding direct PII or sensitive business data in the ID.

Verify resolution

The ID resolves through a verify endpoint pattern such as:

GET /verify/{tagId}