Cermin
A personal thought-management AI system built by developer Arkoes07. It captures fragmented user ideas via a Telegram bot, uses a large language model to automatically categorize them and extract insights, and supports MCP integration so that AI agents can query the stored knowledge.
Timeline (last 90 days)
Developer Arkoes07 built an AI system called Cermin to capture, categorize, and distill ideas, and to answer questions about personal records.
Cermin means "mirror" in Indonesian, and bercermin means "to reflect on oneself".
Cermin's workflow has users send ideas to a Telegram bot, which first saves them and then passes them to an LLM for categorization, returning the classification result within a few seconds.
The Cermin project is open-source under the AGPL-3.0 license, is in the first week of a four-week plan, and has not yet been deployed.
Cermin bot responses take approximately 3 to 6 seconds, staying within an 8-second budget.
The author estimates Cermin's monthly cost to be approximately $6, below the $10 cap.
Cermin breaks each idea down into two orthogonal dimensions: one kind (idea, question, observation, reflection, or plan) and 1 to 3 topics (such as coding, business, or health).
Cermin's classification currently runs on Claude Sonnet in low-intensity mode.
Cermin uses Telegram, SQLite, and an LLM to build a minimum viable system, with plans to gradually add evaluation, monitoring, model comparison, and MCP integration.
The author plans to subsequently benchmark multiple models on the two dimensions of accuracy and cost, including adding Jev to the comparison.
All Facts (10)
Developer Arkoes07 built an AI system called Cermin to capture, categorize, and distill ideas, and to answer questions about personal records.
50%UnverifiedCermin means "mirror" in Indonesian, and bercermin means "to reflect on oneself".
50%UnverifiedCermin's workflow has users send ideas to a Telegram bot, which first saves them and then passes them to an LLM for categorization, returning the classification result within a few seconds.
50%UnverifiedThe Cermin project is open-source under the AGPL-3.0 license, is in the first week of a four-week plan, and has not yet been deployed.
50%UnverifiedCermin bot responses take approximately 3 to 6 seconds, staying within an 8-second budget.
50%UnverifiedThe author estimates Cermin's monthly cost to be approximately $6, below the $10 cap.
50%UnverifiedCermin breaks each idea down into two orthogonal dimensions: one kind (idea, question, observation, reflection, or plan) and 1 to 3 topics (such as coding, business, or health).
50%UnverifiedCermin's classification currently runs on Claude Sonnet in low-intensity mode.
50%UnverifiedCermin uses Telegram, SQLite, and an LLM to build a minimum viable system, with plans to gradually add evaluation, monitoring, model comparison, and MCP integration.
50%UnverifiedThe author plans to subsequently benchmark multiple models on the two dimensions of accuracy and cost, including adding Jev to the comparison.
50%