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docs: clarify from field accessed as from_ in Python SDK #107

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10 changes: 7 additions & 3 deletions fern/definition/messages.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,9 @@ types:
message_id: MessageId
labels: MessageLabels
timestamp: MessageTimestamp
from: MessageFrom
from:
type: MessageFrom
docs: Address of sender. Note - since `from` is a reserved keyword in Python, access this field as `from_` when using the Python SDK (e.g. `message.from_`).
to: MessageTo
cc: optional<MessageCc>
bcc: optional<MessageBcc>
Expand All @@ -111,8 +113,10 @@ types:
message_id: MessageId
labels: MessageLabels
timestamp: MessageTimestamp
from: MessageFrom
reply_to:
from:
type: MessageFrom
docs: Address of sender. Note - since `from` is a reserved keyword in Python, access this field as `from_` when using the Python SDK (e.g. `message.from_`).
reply_to:
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@cubic-dev-ai cubic-dev-ai Bot Mar 17, 2026 •
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P1: Malformed indentation in Message.properties breaks YAML/Fern structure and moves reply_to out of the Message schema.

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Check if this issue is valid — if so, understand the root cause and fix it. At fern/definition/messages.yml, line 119:

<comment>Malformed indentation in `Message.properties` breaks YAML/Fern structure and moves `reply_to` out of the `Message` schema.</comment>

<file context>
@@ -111,8 +113,10 @@ types:
+      from:
+              type: MessageFrom
+        docs: Address of sender. Note - since `from` is a reserved keyword in Python, access this field as `from_` when using the Python SDK (e.g. `message.from_`).
+reply_to:
         type: optional<list<string>>
         docs: Reply-to addresses. In format `username@domain.com` or `Display Name <username@domain.com>`.
</file context>
Fix with Cubic

type: optional<list<string>>
docs: Reply-to addresses. In format `username@domain.com` or `Display Name <username@domain.com>`.
to: MessageTo
Expand Down