dVeracity Semantic API

Query a verified emissions knowledge graph based on Open Footprint, O-DEF and PACT/ISO standards in natural language, validate emissions and product-footprint data against sustainability standards, and read the canonical Open Footprint data model — entities, sectors, policy guardrails and O-DEF semantic codes — so an agent can design against the standard rather than improvise around it. Sixteen tools, all read-only. The Open Footprint model tools are free of charge. Natural-language queries and validation are metered per call in credits, with machine-readable HTTP 402 payment semantics: when an account runs out, the tool tells the agent to ask its human operator to top up, and never retries. Authentication is OAuth 2.1 with dynamic client registration; a human approves access on dVeracity's consent screen. Optional GLEIF-rooted vLEI verified-agent identity is supported for organisations that need attributable agents. Built for ESG and CSRD teams, product-carbon-footprint and PACT implementers, and measurement-reporting operators.