io.github.rozetyp/emission-factors
Emission Factors
Keyless US grid carbon + power cost by ZIP: eGRID Scope 2, Scope 1 fuels, site ranking, clean hours
alive probed 2026-10-08 · HTTP 200
11tools
5.2ktokens in Claude Opus 5.5
5.3ktokens in Claude Code
2.6 %of a 200k context window
3.0ko200k_base estimate
746 msto initialize
1.3 sto list tools
- Endpoint
- https://emission-factors.com/mcp (streamable-http)
- Host
- emission-factors.com
- Protocol
- 2025-06-18
- Reports itself as
- emission-factors 1.7.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-08. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/rozetyp/emission-factors-mcp
- Website
- https://emission-factors.com/mcp-setup
- Registry
- active, updated 2026-10-07 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| plant_emissions | 500 | 16 % |
| calculate_fuel_emissions | 421 | 14 % |
| compare_sites | 375 | 12 % |
| utility_tariff | 318 | 10 % |
| hourly_intensity | 314 | 10 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-08 11:26 | alive | 1.7 s | 11 | 5.2k | 3.0k |
| 2026-10-07 11:22 | alive | 746 ms | 11 | 4.9k | 2.9k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.rozetyp/emission-factors)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.