Memory for Flowise agents

• Which value is current. When a person changes a value, such as Nadia at Acme moving the Acme pilot budget from 32k to 40k, Harny treats the value with the newer timestamp as current and keeps the earlier value answerable by date.
• When a fact happened. You send a timestamp (ISO 8601 with zone) with each memory, so the agent can answer what was true on March 14.
• One person across sources. Harny keeps a private memory for each person, addressed by your id such as demo-user.

You create a Custom Tool node named recall_memory with one input, question, and paste the function into it. The function calls POST /v1/memory/recall from the Flowise server with your app key and the user id. You create a second Custom Tool for ingest the same way. It calls POST /v1/memory/ingest to send new content.

You store the app key and the user id as Flowise variables. The model supplies only the question. The key and the user id come from the variables, and the function sends the user id in the X-Harny-User header.

// Custom Tool "recall_memory", input schema: question (string)
const response = await fetch("https://api.harny.ai/v1/memory/recall", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${$vars.harnyAppKey}`,
    "X-Harny-User": $vars.userId,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ query: $question, identity: $vars.userId }),
});
return await response.text();

Memory results with dated sources and source labels. Results carry sources with the source id, the date it happened and a label.

• POST https://api.harny.ai/v1/memory/ingest takes id, content, label and timestamp.
• POST https://api.harny.ai/v1/memory/recall takes query and identity, and returns results with sources.

Example: your agent asks “what is the Acme pilot budget?” and gets this back. Your code hands the model the content and the source label, so it can say who said it and when.

{
  "asOf": "2026-07-29T00:00:00Z",
  "results": [
    {
      "rank": 1,
      "occurredAt": "2026-07-28T16:00:00Z",
      "content": "Acme pilot budget: currently 40k.",
      "sources": [
        { "sourceId": "call-8821", "label": "Email from Nadia" }
      ]
    }
  ]
}

• Use Flowise's own state for what it does within a flow: the current conversation and the steps of the run.
• Add Harny when the agent must remember a person across sessions, tell which value is current, or answer what was true on a date.