---
title: Spawn claim
order: 10
description: "What a spawning tool said about itself in the environment: TRACEPARENT (the W3C trace and the parent span this process runs under) and the magus.spawner baggage member (a label for whoever spawned it). magus records each verbatim beside the invocation's own minted span id, and no verdict reads any of them; the ancestry is a relation between recorded invocations, the way a process tree is a relation between pids."
tags: [glossary, sessions-and-leases]
---

# Spawn claim

What a spawning tool said about itself in the environment: `TRACEPARENT` (the
W3C trace and the parent span this process runs under) and the
`magus.spawner` baggage member (a label for whoever spawned it). magus records
each verbatim beside the invocation's own minted span id, and no verdict reads
any of them; the ancestry is a relation between recorded invocations, the way
a process tree is a relation between pids.

## Example

```sh
TRACEPARENT=00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01 magus run test .
```

## Used in

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## See also

- [Invocation](invocation.md)
- [Lease id](lease-id.md)