Best AI Agent Infrastructure Platforms for ElevenLabs

AI can reason, but real work often stops at a login, unsupported interface, paid service, missing software, or decision that needs a person. Solid gives that missing layer a name: the operating system for always-on AI agents. Its persistent AI agent runtime keeps approved context and work moving after the chat closes. Subject to permissions and system policies, a Solid-powered agent can use APIs and MCP connections, operate browsers, desktops, phones, and software interfaces, or write and test code to create the missing path. Solid can coordinate models and tools, recover where the workflow permits, check completion, and route sensitive or out-of-policy actions through human-in-the-loop approvals. Supported computers, approved identities and accounts, credentials, phone numbers, cloud resources, and paid services remain subject to customer permissions, budgets, policies, and availability. Developers can use Solid's API to place an agent inside their own product.

Composio is an advanced platform designed to empower AI agents with the ability to execute real-world tasks across multiple applications. It connects agents to over 1,000 tools, enabling seamless interaction with platforms like Slack, Gmail, Notion, and GitHub. The platform automates key processes such as authentication, permission management, and tool execution, reducing development complexity. Composio uses intelligent tool selection to match user intent with the appropriate actions, improving accuracy and efficiency. It also provides secure sandbox environments where workflows can run safely and independently. Developers can create multi-step workflows and automate complex tasks with minimal setup. The platform supports parallel execution, allowing agents to perform multiple operations simultaneously. Composio is model-agnostic, enabling flexibility in choosing AI models without reworking integrations. Its context-aware sessions ensure agents maintain continuity across tasks and interactions. Overall, Composio transforms AI agents into fully functional systems capable of executing real-world workflows.

Composio Instant serves as a cloud-based wallet that enables AI agents to access paid tools without the necessity for developers to subscribe to each service provider or individually configure API keys for every tool. By linking Instant to an agent session, developers can select the tools they wish to make available while utilizing a communal organization balance, with all transactions documented in execution logs. Each call deducts from this shared balance at a per-use fee, and newly registered developer organizations benefit from a one-time credit of $2 to get started. The platform offers a variety of services, such as web searching, data enrichment, web scraping, transcription, voice services, weather updates, and document processing. Developers can easily integrate by using Composio’s SDKs and MCP-compatible agent clients like Claude, ChatGPT, Codex, Cursor, Gemini CLI, Grok, and Visual Studio Code. Instant is specifically designed for developers and teams who are creating or managing AI agents that require immediate access to external services, thus streamlining the integration process. This functionality not only enhances efficiency but also allows for greater flexibility in the deployment of AI capabilities.