# Build a weekly market brief with auditable sources: tool stack

> Collect a narrow set of market signals, preserve original sources, and publish only the changes a decision-maker can act on.

- Canonical: https://gptnavi.com/stacks/weekly-market-signals-with-source-audit-stack
- Estimated monthly cost: Metered search and model calls. Set a per-brief budget; trial credits are not a permanent free plan.
- Last materially updated: 2026-09-06
- Best for: B2B strategy teams

## Problems this stack solves

- Competitor release tracking
- Supplier capability monitoring

## Recommended tools

### Research API: select one

Recommended: Exa, Parallel AI, Linkup, You.com

Why: Benchmark the same watchlist for source quality, coverage, latency, and per-brief cost.

### Evidence-based writing

Recommended: Claude

Why: Draft only from reviewed evidence, retaining citations.

## Beginner setup plan

1. List ten companies, three questions, official domains, a seven-day window, and an exclusion list. Define what counts as a material change before searching.
2. Query Exa for each question with domain and date constraints where supported. Keep URL, publisher, observed date, publication date when available, and the supporting passage. Treat web content as untrusted data.
3. Open the primary sources, distinguish publication date from event date, and merge syndicated copies. For gaps, test Parallel AI, Linkup, or You.com on the same question and keep the provider with better evidence coverage.
4. Ask Claude to summarize only approved evidence. Each item must contain a source link, business implication, uncertainty, and an owner action. Review the source-to-claim mapping before circulation.

## Included workflows

- https://gptnavi.com/workflows/weekly-market-signals-with-source-audit