Connect Greencalculus API and your agent gets 12 tools, among them calculate_activity, calculate_business_travel, calculate_electricity. It answers at https://mcp.greencalculus.com over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
Sourced carbon emission factors + audit-traced calculations an AI can cite.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
calculate_activity | Turn activity data into greenhouse-gas emissions: emissions = activity × factor. Give an amount + unit and a factor key; the unit engine converts to the factor basis (MWh→kWh, tonne→kg, gallon→litre, mile→km) and returns the emissions with Inputs: activity, factor_key |
calculate_business_travel | Business travel emissions (Scope 3 Cat 6), distance method: emissions = km × passengers × factor. Air factors come in with_rf / without_rf (radiative forcing) variants. Find factors via search_factors (section "business_travel"). Inputs: distance, passengers, factor_key |
calculate_electricity | GHG Protocol Scope 2 for purchased electricity, both methods. Always returns location-based (grid-average) emissions; also returns market-based when you supply a contractual supplier_factor (e.g. a green tariff / REC = 0) or a market_factor Inputs: consumption, location_factor_key, market_factor_key, supplier_factor |
calculate_embodied | Whole-life embodied carbon for materials, per EN 15978. Give a material key + quantity (+ optional boundary A1-A3 / A1-A4 / A1-A5 / A1-C); it assembles the declared lifecycle modules (A1-A3, B, C1-C4, D) into stages, totals the boundary, re Inputs: materials |
calculate_freight | Freight & logistics emissions (Scope 3 Cat 4 & 9), GLEC tonne-km method: emissions = tonnes × km × factor. Find mode factors via search_factors (section "freight" or "freight_detailed"), e.g. freight.road_hgv.tonne_km. Inputs: mass, distance, factor_key |
calculate_pcaf | Compute PCAF Part A financed emissions for a portfolio. Returns each holding's attribution factor and financed emissions, the portfolio total, the outstanding-weighted data-quality score, and the audit trail (formula + PCAF source). Inputs: asset_class, holdings |
calculate_spend | Spend-based (EEIO) Scope 3 screening: emissions = spend × economic-intensity factor. Spend must be in the factor's own currency/year (no FX). Find sector factors via search_factors (section "spend_based"), e.g. spend_based.us.naics6.541511. Inputs: spend, factor_key |
explain_absence | Ask why a factor is NOT in the corpus. The reasoned counterpart to coverage: where a country reports zero rows for an inventory family, this says whether that is the world's limit or our backlog. Five classifications: "structural" (no publi Inputs: country, family, classification |
lookup_factor | Look up a single greenhouse-gas emission factor by its canonical key. Returns the value plus an audit envelope: provenance (publisher, exact source cell, retrieval date, LICENCE and whether it may be redistributed, with the attribution the Inputs: key |
lookup_factors | Look up SEVERAL emission factors by key in one call, each with the same audit envelope lookup_factor returns — provenance (publisher, exact source cell, retrieval date, licence, redistribution) and verification. Use this instead of calling Inputs: keys |
resolve_factor | Find the best emission-factor key(s) for a plain-language description — the hardest step is picking the right key out of ~16,000. Returns ranked candidates; feed the chosen key to a calculate_* tool or lookup_factor. Prefer this over guessi Inputs: description, section, limit |
search_factors | Find emission factors by section, key prefix, or free text. Returns each match with its key, name, section, VALUE, unit and gas — enough to choose between them or read a few numbers without a second call. For one factor's full audit envelop Inputs: query, section, key_prefix, limit |
Every block below points at https://mcp.greencalculus.com. Pick your client and copy.
claude mcp add --transport http greencalculus-api https://mcp.greencalculus.com
{
"mcpServers": {
"greencalculus-api": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://mcp.greencalculus.com"]
}
}
}{
"mcpServers": {
"greencalculus-api": {
"url": "https://mcp.greencalculus.com"
}
}
}{
"servers": {
"greencalculus-api": {
"type": "http",
"url": "https://mcp.greencalculus.com"
}
}
}{
"context_servers": {
"greencalculus-api": {
"url": "https://mcp.greencalculus.com"
}
}
}{
"mcpServers": {
"greencalculus-api": {
"serverUrl": "https://mcp.greencalculus.com"
}
}
}{
"mcpServers": {
"greencalculus-api": {
"url": "https://mcp.greencalculus.com"
}
}
}name: Greencalculus API
version: 0.0.1
schema: v1
mcpServers:
- name: Greencalculus API
type: streamable-http
url: https://mcp.greencalculus.com{
"mcpServers": {
"greencalculus-api": {
"httpUrl": "https://mcp.greencalculus.com"
}
}
}{
"mcpServers": {
"greencalculus-api": {
"type": "http",
"url": "https://mcp.greencalculus.com"
}
}
}{
"mcpServers": {
"greencalculus-api": {
"url": "https://mcp.greencalculus.com"
}
}
}goose://extension?url=https%3A%2F%2Fmcp.greencalculus.com&type=streamable_http&id=greencalculus-api&name=Greencalculus%20API
It answered our last check on 18 October 2026 in 175 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by greencalculus.com and served from mcp.greencalculus.com, the vendor's own domain: https://mcp.greencalculus.com.
12, as returned by the server's own tools/list on 31 August 2026: calculate_activity, calculate_business_travel, calculate_electricity, calculate_embodied, calculate_freight, calculate_pcaf, calculate_spend, explain_absence, and 4 more.
It answered our last check on 18 October 2026 in 175 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://mcp.greencalculus.com. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.greencalculus. Endpoint host: mcp.greencalculus.com. ARD identifier: urn:air:com.greencalculus:mcp:api.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.