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Prismer Cloud

Prismer Cloud is a shared runtime for long-running AI agents, designed to provide persistent context and memory, error recovery, cross-session learning and collaboration. Developers connect to it through SDKs, plugins or an MCP server.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Prismer Cloud — OpenViST project profile in Agent Infrastructure.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when an agent workflow needs shared memory, outcome-based recommendations or a connection to Prismer tools from a supported client.

Who it is for

  • Developers building long-running AI-agent workflows.
  • Teams connecting agents through Claude Code, Cursor, Windsurf or the published SDKs.

Documented uses

  • Give agents access to persistent memory and context across sessions.
  • Record errors and outcomes so strategies and fixes can be recommended to agents.
  • Connect agent clients to Prismer tools through an MCP server or plugin.
Before you choose

Requirements & limits

The documented SDK setup opens a browser sign-in and saves an API key locally. The repository is public and licensed under MIT.

  • The repository lists SDKs for JavaScript, Python, Go and Rust.
  • The MCP server is documented for Claude Code, Cursor and Windsurf and advertises 47 tools.
  • The README describes a Claude Code plugin with automatic hooks for error detection, strategy matching and outcome recording.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up Prismer SDK credentials

Sign in through the documented SDK setup flow and save a local API key for Prismer SDKs and plugins.

Before you start

  • Node.js for the documented npx setup route.

Steps

  1. Run the command below.

    Documented command
    npx @prismer/sdk setup

  2. Complete the browser sign-in opened by the setup command.

  3. Use the saved key at ~/.prismer/config.toml with Prismer SDKs and plugins.

Expected outcome

The API key is saved in the local Prismer configuration file.

Guide limitations

  • This guide covers credential setup, not a specific agent task or API call.
Documentation 1 ↗
Source-based practical guide

Connect an MCP client to Prismer

Configure the Prismer MCP server for Claude Code, Cursor or Windsurf.

Before you start

  • A Prismer API key.
  • An MCP-compatible client; the README documents Claude Code, Cursor and Windsurf.

Steps

  1. For Claude Code, run claude mcp add prismer -- npx -y @prismer/mcp-server.

  2. For Cursor or Windsurf, add the documented prismer server entry to .cursor/mcp.json or .windsurf/mcp.json.

  3. Set PRISMER_API_KEY in the server entry to the Prismer API key.

Expected outcome

The client configuration points to Prismer's MCP server, which the README lists as providing 47 tools.

Guide limitations

  • The README does not provide a specific tool workflow or API endpoint details in the available material.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
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Source availability
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Sources checked
8 October 2026
Original website title
Prismer-AI/PrismerCloud · Official homepage title · retained in its source language
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