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n8n AI Agent: Supabase Storage via S3 Protocol
An autonomous LangChain Tools Agent built in n8n that connects to Supabase Storage via its S3-compatible REST API (/storage/v1/s3), inspects agent…
An autonomous LangChain Tools Agent built in n8n that connects to Supabase Storage via its S3-compatible REST API (/storage/v1/s3), inspects agent skills and rule sets from the 'AGENT SKILLS' bucket, and synthesizes dynamic Markdown guidance.
- Proves files exist in private Supabase Storage bucket 'AGENT SKILLS' across 5 modular skill packages
- Implements S3 clue technique connecting n8n's AWS S3 tool to Supabase's /storage/v1/s3 endpoint
- LangChain Tools Agent autonomously queries bucket directory tree and reads SKILL.md rules
- Interactive n8n chat simulator proves the agent answers 'What skills are available?' matching reference output
- Includes interactive n8n dark canvas visualizer with animated node pulses and inspector drawer
- Provides dual-mode S3 gateway supporting offline mock simulation and real Supabase S3 credentials
- Inspects authentic AWS SigV4 signed HTTP packets and Supabase S3 XML ListBucketResult responses
- Features automated 8-point browser diagnostics test suite verifying bucket state, S3 resolution, and parity
Built with: n8n, Supabase Storage, Amazon S3 API, AWS SigV4, LangChain, AI Agent, OpenAI, Object Storage, JavaScript