
Sourced emission factors and carbon calculations: activity, freight, spend, travel, PCAF.
Public tool metadata for what this MCP can expose to an agent.
lookup_factorLook up one emission factor by canonical key, with its full audit envelope.Look up one emission factor by canonical key, with its full audit envelope.
No parameter schema in public metadata yet.
search_factorsFind factors by free text, section, or key prefix.Find factors by free text, section, or key prefix.
No parameter schema in public metadata yet.
lookup_factorsLook up several factors by key in one call, each with its audit envelope.Look up several factors by key in one call, each with its audit envelope.
No parameter schema in public metadata yet.
calculate_activityEmissions = activity × factor, with unit conversion to the factor basis.Emissions = activity × factor, with unit conversion to the factor basis.
No parameter schema in public metadata yet.
calculate_embodiedWhole-life embodied carbon for materials per EN 15978.Whole-life embodied carbon for materials per EN 15978.
No parameter schema in public metadata yet.
calculate_pcafPCAF Part A financed emissions for a portfolio.PCAF Part A financed emissions for a portfolio.
No parameter schema in public metadata yet.
calculate_electricityGHG Protocol Scope 2 for purchased electricity, location-based and (when a market factor or supplier factor is given) market-based.GHG Protocol Scope 2 for purchased electricity, location-based and (when a market factor or supplier factor is given) market-based.
No parameter schema in public metadata yet.
calculate_freightFreight and logistics emissions (GLEC); the factor's denominator decides whether to send mass or teu.Freight and logistics emissions (GLEC); the factor's denominator decides whether to send mass or teu.
No parameter schema in public metadata yet.
calculate_spendSpend-based (EEIO) Scope 3 screening: emissions = spend × intensity factor.Spend-based (EEIO) Scope 3 screening: emissions = spend × intensity factor.
No parameter schema in public metadata yet.
calculate_business_travelBusiness travel emissions by the distance method.Business travel emissions by the distance method.
No parameter schema in public metadata yet.
resolve_factorFind the best factor key(s) for a plain-language description, country included in the text.Find the best factor key(s) for a plain-language description, country included in the text.
No parameter schema in public metadata yet.
explain_absenceAsk why a factor is not in the corpus.Ask why a factor is not in the corpus.
No parameter schema in public metadata yet.
Sponsors
carboncalc is a small local bridge to the hosted GreenCalculus MCP server, a sourced corpus of greenhouse-gas emission factors plus deterministic calculators built on top of it. You can look a factor up by its canonical key and get back not just the value but an audit envelope — who published it, the exact source reference, when it was retrieved, what licence covers it and whether the per-gas components add up — or search and resolve factors from a plain-language description when you do not yet know the key.
On top of that corpus sit the calculators: activity data into emissions, whole-life embodied carbon for materials, PCAF financed emissions for a portfolio you supply, Scope 2 electricity under both methods, freight under the GLEC framework, spend-based EEIO screening, and business travel by distance. A companion tool explains why a factor is absent from the corpus — whether no publisher issues it anywhere, it has not been sourced yet, it was declined, or the gap is coupled to another empty family.
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