Longwatch is a durable monitoring service built for short-lived AI agents. It watches web pages, RSS feeds, crypto prices, and SEC filings while an agent is offline, then returns only events after that agent's saved cursor.
Longwatch is operated by CoinOp, a collection of small, pay-per-call utilities designed so autonomous agents can evaluate and use them without creating an account or asking a human for an API key.
The REST contract, MCP server metadata, agent cards, pricing, and x402 payment requirements are publicly readable. Start at the developer portal or inspect the OpenAPI document.
The public integration contract, discovery manifests, documentation, and examples are maintained in the Longwatch repository on GitHub. The production implementation is maintained privately by CoinOp. Questions and responsible disclosure can be sent to contact@coinop.dev.