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Market Angel — research & content in one workflow

Multi-tenant SaaS for marketing teams and brand operators: structured niche research → channel-ready copy and visuals, with brand context baked in — not generic chat AI.

Project-level brand brain — voice, audience, guardrails, and assets in one place.
Live web-grounded research via Gemini with Google Search Grounding, not static model guesses.
Same backend powers the product UI and API keys for automation — with strict tenant isolation.

Context

Teams juggle disconnected tools: competitor scans, manual doc reviews, separate post generators, and image tools. Insights rarely carry into content, brand voice drifts, and automation (n8n, scripts, internal tools) cannot share the same source of truth as the web app.

Solution

Market Angel is a multi-tenant SaaS. Each user works inside projects with rich brand context (description, audience, tone, wording guardrails, and more). Database access is always scoped by project, so research and content never bleed across clients or campaigns.

Research pillar

Deep search grounded in the live web via Gemini with Google Search Grounding, not stale model-only answers. Multiple specialized agents run in parallel across angles such as audience, competitors, and trends; outputs are synthesized into structured insights: pains, opportunities, behavioral triggers, and actionable recommendations. The module also supports document uploads (PDF, Office formats, text-heavy images), RSS ingestion, and YouTube workflows (channels, transcripts, relevance to the topic).

Content pillar

Post generation tuned to channel and language using project settings, instruction-based refinement ("tune"), and image generation via a curated model set with reference discovery; assets land in cloud storage while the database stores metadata and public URLs.

Authentication covers browser sessions (Supabase Auth, including Google OAuth) and API keys for external automation — same backend authorization model, with sensible limits for programmatic access.

Technical highlights

  • Frontend — Next.js, TypeScript, Tailwind, shadcn/ui — fast product UI with persisted user preferences where it matters.
  • Backend — FastAPI with a single unified auth dependency for data endpoints and clear separation for key-management routes.
  • Data — PostgreSQL via Supabase — research results, generated content, RSS and YouTube artifacts, activity history.
  • AI — Gemini for grounded deep research; OpenRouter for text content and images; configurable research depth.
  • Ops / product — Separate app and API surfaces; API-key automation without compromising tenant isolation.

User value

One project equals one brand brain — less copy-paste and fewer disjoint spreadsheets
Research tied to real-time search, not a static training cutoff
Insights and assets in one product with traceability and per-project libraries
Marketing and automation share the same API as the UI

Takeaway

Market Angel is a multi-tenant SaaS for AI-powered market research and content production: project-scoped brand context, web-grounded deep research, documents and media feeds, text and image generation with refinement, plus API access — built around secure multi-user isolation and predictable programmatic limits.

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