Frugal
Route MCP tool calls through the cheapest provider that still returns a usable result so agent runs do not burn API budget.
Overview
Frugal is an MCP server for the Operate phase that routes tool calls to the lowest-cost provider that returns a result.
What is this MCP server?
- Routes each MCP tool call to the cheapest provider that returns a result
- npm package frugal-mcp v0.0.3 with stdio transport
- GitHub source at brainsparker/frugal
- Fits multi-tool agent stacks where provider pricing differs per capability
- Operate-focused guardrail for indie builders on tight API budgets
- npm identifier frugal-mcp version 0.0.3
- Transport type stdio
- Repository https://github.com/brainsparker/frugal
Community signal: 1 GitHub stars.
What problem does it solve?
Agent workflows fan out across MCP tools and providers, and you only notice the bill after a week of heavy use.
Who is it for?
Budget-conscious solo builders running many MCP tools who want automatic cost-aware routing on repetitive calls.
Skip if: Builders who use a single fixed provider and already cap spend at the account level with no multi-provider MCP graph.
What do I get? / Deliverables
After installing frugal-mcp over stdio, eligible tool calls follow cheaper provider paths without you hand-switching configs per task.
- Local stdio MCP server process for cost-aware routing
- Lower marginal cost on routed tool calls when a cheaper provider succeeds
Recommended MCP Servers
Journey fit
Cost routing is shelved under Operate because it matters most when you are running agents daily and need sustainable infra spend. Infra is the right subphase for provider routing, quotas, and per-call economics—not a one-time Build spike.
How it compares
Cost-routing MCP proxy, not an eval platform or memory layer.
Common Questions / FAQ
Who is Frugal for?
Frugal is for indie developers and agent power users who connect several MCP tools and want cheaper default routing instead of always hitting the priciest endpoint.
When should I use Frugal?
Use Frugal during Operate when agents run daily and you are optimizing API spend across providers that back your MCP tool calls.
How do I add Frugal to my agent?
Install npm package frugal-mcp at version 0.0.3 and register it as a stdio MCP server in Claude Code, Cursor, or your client using the brainsparker/frugal repository instructions.