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Tool reference

list_flow_messages

Returns message records for the requested status and Flow.

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Purpose

The review queue (status pending_review) and message history (sent, dismissed, notified, skipped, failed). Call when asked about drafts awaiting review or what a flow sent.

Credentials and scope

Owner workspace credential. The credential determines tool visibility. For tools with appId, use the HeyCrust app UUID from list_apps; the dashboard app selector does not supply MCP arguments for you.

Inputs

  • status: optional; string; values: pending_review, sent, dismissed, notified, skipped, failed, queued, drafting
  • flowId: optional; string; format: uuid — Flow id from list_flows.
  • limit: optional; integer; minimum: 1; maximum: 200; default: 50

Example request

The identifiers and merchant are fictional. Replace them with records returned for your own workspace; this example is schema-checked, not a promise that the fictional record exists.

json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_flow_messages",
    "arguments": {
      "status": "pending_review",
      "limit": 50
    }
  }
}

POST this JSON to https://heycrust.com/api/mcp with Content-Type: application/json and Authorization: Bearer <YOUR_CREDENTIAL>. The tool result normally contains JSON encoded as text in result.content; inspect JSON-RPC errors and result.isError before using it.

Result

Returns message records for the requested status and Flow. Use pending_review for the review queue.

Effects and verification

Reads existing records or definitions. It does not create a payment or send a message. Verify the returned app/merchant identity and source coverage before interpreting the result.

Troubleshooting

A missing tool can mean that the credential lacks its catalog or required scopes. Invalid arguments are different from unavailable source data or a record outside the workspace. A handler can return a business error even when the argument schema is valid. Read MCP overview and Help.

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