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Pass router tags in request headers - x-litellm-tags (#8609)

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* feat(litellm_pre_call_utils.py): support `x-litellm-tags` request header

allow tag based routing + spend tracking via request headers

* docs(request_headers.md): document new `x-litellm-tags` for tag based routing and spend tracking

* docs(tag_routing.md): add to docs

* fix(utils.py): only pass str values for openai metadata param

* fix(utils.py): drop non-str values for metadata param to openai

preview-feature, otel span was being sent in
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Krish Dholakia 2025-02-18 08:26:22 -08:00 • committed by GitHub
parent 7bfd816d3b
commit 2340f1b31f
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9 changed files with 122 additions and 22 deletions
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19
tests/litellm_utils_tests/test_utils.py
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@ -1966,3 +1966,22 @@ def test_get_applied_guardrails(test_case):
# Assert
assert sorted(result) == sorted(test_case["expected"])
def test_add_openai_metadata():
from litellm.utils import add_openai_metadata
metadata = {
"user_api_key_end_user_id": "123",
"hidden_params": {"api_key": "123"},
"litellm_parent_otel_span": MagicMock(),
"none-val": None,
"int-val": 1,
"dict-val": {"a": 1, "b": 2},
}
result = add_openai_metadata(metadata)
assert result == {
"user_api_key_end_user_id": "123",
}