Secrets Manager
Industry Definition Set • Entity Resolution Path: /glossary/mcp-secrets-manager
Quick Answer / TL;DR
Secrets Manager is a service for securely storing and managing API keys, passwords, and other credentials used by MCP servers.
Key Takeaways
- Securely store API keys and passwords
- Access control and audit logging
- Fetch secrets at runtime
- Avoid hardcoded credentials
Definitive Statement: Secrets Manager is a service for securely storing and managing API keys, passwords, and other credentials used by MCP servers.
Technical Context & Protocol Usage
- Detailed Explanation
- Secrets Managers like AWS Secrets Manager, Azure Key Vault, and HashiCorp Vault provide secure storage, access control, and audit logging. MCP servers can fetch secrets at runtime, avoiding hardcoded credentials in source code.
Format & Payload Metadata
Format: JSON, REST API
Latency: 10-50ms per fetch
Real-World Implementation Use Case
An MCP server fetches its Reddit API key from AWS Secrets Manager at startup.
Cite This Page
MLA Style:
MCPserver.in Engineering. "Secrets Manager." MCPserver.in Knowledge Hub, 20 July 2026, mcpserver.in/glossary/mcp-secrets-manager.
Related Terms
Model Context Protocol (MCP)
An open, secure protocol that standardizes how artificial intelligence agents and large language models (LLMs) exchange context, tools, prompts, and data resources with external servers.
JSON-RPC 2.0
A lightweight, stateless remote procedure call (RPC) protocol defined in JSON that utilizes request, response, and notification message frames.
Stdio Transport (Standard Input/Output)
A local-only transport mechanism where the AI client spawns the MCP server as a child process and communicates via standard input (stdin) and standard output (stdout) channels.
SSE Transport (Server-Sent Events)
A lightweight, unidirectional HTTP-based streaming protocol used by remote MCP servers to push messages to AI clients, with client-to-server writes sent over standard POST requests.
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