# sendChatMessage

Send a message in a chat conversation.

Agent View of the PolicyLayer registry record for `sendChatMessage`. HTML page: https://policylayer.com/tools/xdevplatform-xmcp/sendchatmessage

## Facts

- Tool: `sendChatMessage`
- Server: Xdevplatform/xmcp (`xdevplatform/xmcp`) — https://policylayer.com/tools/xdevplatform-xmcp.md
- Homepage: https://github.com/xdevplatform/xmcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "sendChatMessage",
    "arguments": {}
  }
}
```

## Why sendChatMessage is rated Medium

The tool creates new chat message data which modifies the state of a conversation. This is a Write action rather than Read (it modifies, not just retrieves), Execute (it doesn't run arbitrary code or external operations), Destructive (messages can be deleted or edited, so it's reversible), or Financial (no money movement).

From the tool's own definition: "Tool name is 'sendChatMessage' and description states 'Send a message in a chat conversation.' This is a write operation that creates new data (a chat message) in a reversible manner."

## Use case

AI agents use sendChatMessage to create or update resources in Xdevplatform/xmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xdevplatform/xmcp environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Xdevplatform/xmcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "sendChatMessage": {
      "limits": [
        {
          "counter": "sendchatmessage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Xdevplatform/xmcp (134)

- `deleteAccountActivitySubscription` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteaccountactivitysubscription.md
- `deleteActivitySubscription` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteactivitysubscription.md
- `deleteAllConnections` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteallconnections.md
- `deleteCommunityNotes` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deletecommunitynotes.md
- `deleteConnectionsByEndpoint` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteconnectionsbyendpoint.md
- `deleteConnectionsByUuids` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteconnectionsbyuuids.md
- `deleteDirectMessagesEvents` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deletedirectmessagesevents.md
- `deleteLists` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deletelists.md
- `deleteMediaSubtitles` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deletemediasubtitles.md
- `deletePosts` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteposts.md
- `deleteUsersBookmark` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/deleteusersbookmark.md
- `removeListsMemberByUserId` — Destructive — https://policylayer.com/tools/xdevplatform-xmcp/removelistsmemberbyuserid.md
- `createComplianceJobs` — Execute — https://policylayer.com/tools/xdevplatform-xmcp/createcompliancejobs.md
- `sendChatTypingIndicator` — Execute — https://policylayer.com/tools/xdevplatform-xmcp/sendchattypingindicator.md
- `chatMediaDownload` — Read — https://policylayer.com/tools/xdevplatform-xmcp/chatmediadownload.md
- `dmConversationsMediaDownload` — Read — https://policylayer.com/tools/xdevplatform-xmcp/dmconversationsmediadownload.md
- `getAccountActivitySubscriptionCount` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getaccountactivitysubscriptioncount.md
- `getAccountActivitySubscriptions` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getaccountactivitysubscriptions.md
- `getActivitySubscriptions` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getactivitysubscriptions.md
- `getChatConversation` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getchatconversation.md
- `getChatConversations` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getchatconversations.md
- `getCommunitiesById` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getcommunitiesbyid.md
- `getComplianceJobs` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getcompliancejobs.md
- `getComplianceJobsById` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getcompliancejobsbyid.md
- `getConnectionHistory` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getconnectionhistory.md
- `getDirectMessagesEvents` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getdirectmessagesevents.md
- `getDirectMessagesEventsByConversationId` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getdirectmessageseventsbyconversationid.md
- `getDirectMessagesEventsById` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getdirectmessageseventsbyid.md
- `getDirectMessagesEventsByParticipantId` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getdirectmessageseventsbyparticipantid.md
- `getInsights28Hr` — Read — https://policylayer.com/tools/xdevplatform-xmcp/getinsights28hr.md
- …and 104 more: https://policylayer.com/tools/xdevplatform-xmcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=xdevplatform-xmcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/xdevplatform-xmcp