walkindb

walkindb provides ephemeral, private SQL databases designed specifically for agent-based use cases where traditional database signup and persistence are barriers. It allows users or automated agents to provision a fresh, isolated SQLite database with a single HTTP call, requiring no signup, API key, credit card, or form. Each database instance has a strict 10-minute time-to-live (TTL), after which the data is automatically deleted, making the tool suitable for short-lived, transient state storage rather than long-term persistence.

The service operates over HTTP with a JSON interface, enabling interaction via curl or through Python and JavaScript/TypeScript SDKs. Upon the initial request, walkindb provisions a new SQLite database and returns a session token in the response header. This token can be reused for subsequent requests within the same 10-minute window, ensuring continued access to the same database instance until expiration. The platform supports full SQLite features per instance, including table creation, joins, indexes, and FTS5, but is intentionally limited in ownership and persistence: users do not retain data beyond the TTL, and the tool is not intended for storing PII, regulated data, or as a replacement for durable databases such as Postgres.

walkindb is tailored for scenarios where agents—such as large language models or automation scripts—require a temporary workspace to store and manipulate state without user intervention in signup or credential management. The tool is also compatible with the Model Context Protocol (MCP) for integration with certain agent frameworks and editors, including Claude Code, Cursor, and Zed.

Security is a core focus, given the exposure of raw SQL to unauthenticated callers. The platform implements multiple layers of defense, including SQLite authorizer callbacks, query timeouts, strict resource limits, keyword blocklists, filesystem jails, syscall allowlists, per-IP rate limits, isolated per-session SQLite files, HMAC-signed session tokens, and daily secret rotation. 0 license and does not charge for access or require payment to start.