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Side hustle: Custom AI memory companion agent service on Xianyu, earning 12,000 RMB/month

Workflow: Every morning at 9:00 AM, check order inquiries from Xianyu, Xiaohongshu, and Douyin. Consolidate daily custom requests

AGENT

Key Fields

FIELD STAMPS

IndustryContent / Creator Economy

RegionChina（国内）

ScaleSME

ChannelOnline

🔧 Workflow

Every morning at 9:00 AM, check order inquiries from Xianyu, Xiaohongshu, and Douyin. Consolidate daily custom requests and confirm the specific scenario with clients (e.g., exam coaching, heartbreak healing, or elderly companionship). Guide clients to provide anonymized chat logs, journals, or voice materials, while strictly prohibiting sensitive information like ID cards or bank details. Once materials are submitted, use Xunfei Tingjian to batch-transcribe voice into structured text, import it into the Coze platform to build a dedicated memory knowledge base, and fine-tune prompts for the specific scenario. Simulate the requested tone, dialogue logic, and intervention strategies. After completing 3 rounds of testing to ensure fluency, deliver the web-based interactive agent. Provide 7 days of free fine-tuning post-delivery and iterate the knowledge base daily based on client feedback.

🛠 Setup Requirements

Requires basic low-code agent building skills, familiarity with LLM prompt engineering, and an awareness of data anonymization; no professional programming background is needed. Tools include a Coze advanced account, Xunfei Tingjian transcription subscription, LLM API credits, and web publishing tools. Initial setup of a standardized data processing and knowledge base pipeline takes 7-10 days. Early delivery cycles are 2-3 days per order, which can be shortened to under 8 hours with proficiency, and templates can be reused for batch delivery.

🧰 Toolchain

🔧 Coze
🔧 Xunfei Tingjian
🔧 Kimi LLM
🔧 Eqxiu web publishing tool

💰 Revenue

① Custom private memory companion agents on Xianyu and Xiaohongshu (Primary income): Individual clients pay per order, 399-599 RMB/unit × 25-30 orders/month = 10,000-18,000 RMB/month, accounting for ~80% of monthly income. ② Monthly maintenance fees: Returning clients pay 99 RMB/month for maintenance, accounting for over 20% of monthly income. ③ Scenario upgrade packages and tiered memberships: Monthly subscriptions for individual clients, ranging from 99-299 RMB/month (99, 199, 299 RMB/month tiers). ④ Opportunity: White-label licensing of companion scenario template libraries (benchmarked against human psychological counseling at 300-800 RMB/hour; similar emotional companion apps have 60 million users and hundreds of millions in revenue).

💸 Cost

Coze advanced subscription (avg. 300 RMB/month), Xunfei Tingjian transcription credits (avg. 120 RMB/month), Xianyu promotion and deposit fees (~200 RMB/month), and LLM API calls (avg. 80 RMB/month). Total monthly cost is around 700 RMB, with a profit margin exceeding 90%.

⏱ Time Investment

3-4 hours daily: 1 hour for multi-platform inquiries and requirement confirmation, 1.5 hours for material cleaning, knowledge base setup, prompt tuning, and testing, 1 hour for client communication and feedback collection, and 0.5 hours for after-sales fine-tuning and template iteration.

🚀 Getting Started

Beginners should first register for free trial accounts on Coze and Xunfei Tingjian. Study the construction logic of award-winning projects like 'The Only You' and 'Dukou' in the TRAE community. Build a Minimum Viable Product (MVP) memory knowledge base using at least 10 of your own daily chat logs. Post a demo on your social circle to acquire 3-5 seed users to validate the delivery process and ensure no copyright or privacy risks before officially listing services on platforms like Xianyu and Xiaohongshu.

🔑 Keys to Success

✅ Strict end-to-end data anonymization and privacy protection; prohibit storage of raw sensitive materials and auto-delete temporary data after delivery to prevent leaks.
✅ Pre-set exclusive dialogue frameworks and phased intervention logic for different scenarios like exam prep or heartbreak to avoid the homogenization of general AI companions.
✅ Offer 7 days of free fine-tuning and long-term maintenance options to lower the barrier for client decision-making and increase repurchase rates.
✅ Build a standardized scenario template library to solidify prompts, intervention strategies, and dialogue styles into reusable modules, increasing delivery efficiency by over 60% and supporting batch orders.

⚠️ 风险

⚠️ Involves personal privacy and emotional attachment; data leaks or sudden service interruptions could lead to legal disputes and reputational damage.
⚠️ Future upgrades to general LLMs, such as built-in long-term memory and personalized companionship, could pose a significant threat to this custom service.
⚠️ Some clients may become overly dependent on AI for emotional support, potentially leading to liability disputes if psychological issues arise.

📌 Real Cases

📌 The TRAE community project 'The Only You' created custom dialogue partners for young people living alone, receiving 27 orders in the first month and validating the willingness to pay for memory companions.
📌 The TRAE community project 'Dukou' used the Kübler-Ross grief cycle to build an AI heartbreak healing companion, achieving a 7-day user retention rate of 62% and validating the commercial value of scenario-based companionship.
📌 Existing sellers on Xianyu provide similar custom services at 499 RMB/unit, with 32 monthly sales and monthly income exceeding 16,000 RMB.

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