> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sublay.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Send message
> Send a message to a conversation with optimistic updates
export const SpaceReputationParams = ({variant = "context", field = "path"}) => {
const isUser = variant === "user";
return <>
Opt-in. Adds a spaceReputation number to each returned user,
scoped to a single space. Requires the reputation bundle.
The reputation total is always present regardless;{" "}
spaceReputation is purely additive and only appears when you
pass this object. This object is the primary form — it
replaces the deprecated flat props below. See the{" "}
Reputation data model for the
full contract.
{isUser ?
Which bucket to read. A space <uuid> reads that
space's bucket; "none" reads the
project-general (space-less) bucket.{" "}
"context" is rejected (400) on this
endpoint — there is no space context to derive. The empty string
and the legacy general / null aliases are
also rejected. Missing buckets read as 0.
:
Which bucket to read. One of: a space <uuid>{" "}
(that space's bucket), "none" (the
project-general, space-less bucket), or{" "}
"context" (the space derived from the
request context — resolved per-row on lists, or the single space on
member/team/conversation surfaces). The empty string and the legacy{" "}
general / null aliases are rejected (400).
Missing buckets read as 0.
}
Only honored when spaceId is an explicit space <uuid>.
When true, spaceReputation is the{" "}
subtree sum — the named space plus all of its
descendant spaces (the root space's own bucket included). Ignored for{" "}
"none"; not allowed with "context".
{isUser ? Deprecated — use the spaceReputation{" "}
object instead. The flat form of spaceReputation.spaceId.
Still accepted (the object wins if both are passed); removal is a later
major version. Accepts a space <uuid> or "none" only —{" "}
"context" is rejected (400) on this endpoint.
: Deprecated — use the spaceReputation{" "}
object instead. The flat form of spaceReputation.spaceId.
Still accepted (the object wins if both are passed); removal is a later
major version. Accepts a space <uuid>, "none", or{" "}
"context".
}
Deprecated — use{" "}
spaceReputation.includeDescendants instead. The flat form,
only honored alongside an explicit spaceReputationId<uuid>.
;
};
## Overview
Returns an async function that sends a message to a conversation. An optimistic entry is inserted into Redux immediately — with a temporary ID — and replaced by the server-confirmed message on success. If the request fails, the optimistic message is flagged with `sendFailed: true`.
Requires `ChatProvider` in the component tree.
## Usage Example
```tsx theme={null}
import { useSendMessage } from "@sublay/react-js";
function MessageInput({ conversationId }: { conversationId: string }) {
const send = useSendMessage({ conversationId });
const [text, setText] = useState("");
const handleSend = async () => {
if (!text.trim()) return;
await send({ content: text });
setText("");
};
return (
setText(e.target.value)} />
);
}
```
## Props
The ID of the conversation to send the message to.
## Parameters
The hook returns a function. That function accepts:
Plain text content of the message.
GIF attachment data.
User mentions to embed in the message.
Arbitrary key-value data attached to the message.
ID of the message being quoted. Populates `quotedMessage` on the stored message.
ID of the parent message when sending a thread reply.
File attachments. When provided, the request is sent as `multipart/form-data`.
## Returns
The server-confirmed [ChatMessage](/v8/data-models/chat-message) object. When `spaceReputation` is requested, its embedded sender carries an added `spaceReputation` number. See [Reputation](/v8/data-models/reputation).
## Notes
* At least one of `content`, `gif`, `files`, or non-empty `metadata` should be provided for a meaningful message.
* For integration guidance, see [Chat: Messages](/v8/sdk/chat/messages).
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