Sprout MCP

Drop your Opus bill 80%. Model-tiered content pipeline for MCP — cheap models seed work, expensive models verify it.

Sprout routes tasks to the right model tier automatically. Haiku drafts, Sonnet fact-checks, Opus verifies. Every chunk tracks provenance, confidence, and cost.

Install

uvx sprout-mcp

Or add to Claude Code's MCP config (~/.claude/settings.json):

{
  "mcpServers": {
    "sprout": {
      "command": "uvx",
      "args": ["sprout-mcp"]
    }
  }
}

How It Works

  Haiku (seed)  →  Sonnet (watered)  →  Opus (sprouted)
    Draft            Fact-check           Verify
    $0.005/M         $0.015/M             $0.075/M

1. Seed — Haiku drafts content cheaply (summarization, extraction, first passes)
2. Water — Sonnet reviews and fact-checks the seeds
3. Sprout — Opus deep-verifies only what passed Sonnet's review

Instead of running everything through Opus at $75/M output tokens, most work stays at Haiku's $5/M. Only the final verification — typically 10-20% of total work — touches Opus.

Tools (13)

Tool	Description
submit_chunk	Store content with provenance (model, task type, sources)
get_review_queue	List chunks needing review, filtered by confidence/project
mark_reviewed	Promote (seed→watered→sprouted) or reject chunks
recommend_model	Get model recommendation for a task type
get_stats	Dashboard of chunk counts, confidence levels, token usage
export_chunks	Export verified chunks as JSON
opus_test	Generate structured review summary for batch verification
schedule_task	Schedule tasks to run at a specific time or delay
list_scheduled	View pending scheduled tasks
cancel_scheduled	Cancel a pending scheduled task
configure_routing	Add/update routing rules at runtime
get_cost_report	Estimated spend per model with real pricing
retry_on_error	Track failed attempts with backoff guidance

Configuration

Environment Variables

Variable	Default	Description
SPROUT_DB_PATH	~/.sprout/sprout.db	SQLite database location
SPROUT_CONFIG	(none)	Path to JSON config file for custom routes and pricing
SPROUT_MAX_RETRIES	3	Max retry attempts before giving up
SPROUT_RETRY_BACKOFF	2.0	Exponential backoff base (seconds)

Custom Config File

Create a JSON file and point SPROUT_CONFIG at it:

{
  "routes": {
    "code_review": { "tier": "sonnet", "reason": "Code analysis needs reasoning" },
    "translation": { "tier": "haiku", "reason": "Straightforward language task" }
  },
  "pricing": {
    "custom-model": 10.00
  }
}

Default Routing Table

Task Type	Tier	Why
biography_synthesis	haiku	Factual summarization
council_description	haiku	Historical summarization
document_synopsis	haiku	Content summarization
json_validation	haiku	Structural verification
summarization	haiku	General summarization
data_extraction	haiku	Structured extraction
fact_check_first_pass	sonnet	Cross-reference claims
code_review	sonnet	Code analysis
fact_check_final	opus	Deep factual verification
theological_analysis	opus	Domain expertise required
complex_analysis	opus	Deep reasoning required

Unknown task types default to haiku — start cheap, escalate if needed.

Example Workflow

You: Use recommend_model for "biography_synthesis"
Sprout: biography_synthesis → haiku-4.5 (Factual summarization)

You: Use submit_chunk to store the Haiku output
Sprout: Stored chunk abc12345 [seed] for person-001.biography

You: Use get_review_queue to see what needs fact-checking
Sprout: 1 chunk pending review

You: Use mark_reviewed to promote after Sonnet fact-checks it
Sprout: Chunk abc12345 → watered (verified by so

... [View full README on GitHub](https://github.com/mepsopti/sprout-mcp#readme)