An r/LangChain post documented an autonomous Data-as-a-Service architecture: Google Dorks for source discovery, Llama-3 for transformation, MCP for serving. The source step needs a search API. Five candidates ranked.
Top Pick
Scavio fits the source step because Google Dorks queries (`site:gov.br filetype:pdf 2026`) hit /search the same way they hit a SERP API, and the same key serves the cached MCP layer.
Full Ranking
#1Our Pick
Scavio
DaaS pipelines that also need MCP serving
Pros
- MCP server included
- Typed JSON
- Multi-surface
Cons
- BYO LangChain Tool wrapper for advanced patterns
#2
Serper
Cheap dorks at high volume
Pros
- Cheapest at scale
Cons
- No MCP
- No extract
#3
SerpAPI
Mature dorks pipelines
Pros
- Mature
- Native Google features
Cons
- Pricier
- No MCP
#4
DataForSEO
Volume-heavy commercial intent
Pros
- Cheapest commercial-data
Cons
- More setup
#5
Tavily
Pre-summarized retrieval
Pros
- LLM-tuned snippets
Cons
- Less flexible for raw dorks
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Per-query cost | $0.0043 | $0.0003-0.001 | $0.015 |
| MCP server | Hosted | No | No |
| Extract endpoint (PDF support) | Yes | No | No |
| Best for | DaaS + MCP | High-volume dorks | Mature deployments |
Why Scavio Wins
- The r/LangChain DaaS post described the cache layer as 'SQLite returning JSON in 50ms.' That cache is keyed by query string. Scavio's typed JSON is the cache value with no parsing layer between the API and the cache. The architecture stays clean.
- MCP serving is the third leg of the DaaS architecture. Scavio's hosted MCP at mcp.scavio.dev/mcp means the same vendor that serves the dorks queries also provides the MCP interface that downstream CrewAI or LangChain agents attach to.
- PDF extract matters for government dorks. The /extract endpoint accepts a URL and returns markdown, which the LLM transformation step (the post used Llama-3) can consume directly. Serper does not have an extract equivalent.
- Honest tradeoff: at very high dorks volume (>100K queries/mo), Serper at $0.30/1K beats Scavio's $0.61/1K. For the first 7,000 queries Scavio's $30/mo flat is simpler accounting. Many DaaS pipelines stay below 7K/mo because the cache layer absorbs repeats.
- LangChain Tool wrapper for Scavio is a 12-line subclass; the post showed a 30-line Tool wrapper for Serper plus a separate MCP layer. Consolidating saves the agent code maintenance cost.