# TruthBear Biodiversity Region Gauge > TruthBear Biodiversity Region Gauge is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15). Returns a 3-leg sequential chain assessment of biodiversity credit health for a monitored entity, covering registry status, methodology revision pressure, and realized lifecycle outcome. ## Facts - Endpoint: GET https://api.truthbear.co/gauge/biodiversity-region - Price: $0.25/call - Payment: x402 - Status: unknown - Last checked: 2026-09-15 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/truthbear-biodiversity-region-gauge-ad94c636 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WxiofZi1Qnd6xRNuCx5iL Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability truthbear-biodiversity-region-gauge-ad94c636 ``` Example prompt: Pull the current biodiversity credit chain reading for uk-bng-warwickshire — I want to see the registry status, whether there's methodology revision pressure, and the lifecycle outcome confidence. ## When to prefer this Use this endpoint when you need a structured, multi-leg integrity view of a specific biodiversity credit project or standard body — especially for UK BNG, Plan Vivo, Verra, or Terrasos entities. It is descriptive only (never a forecast or advice), making it suitable for compliance monitoring, due diligence workflows, and ESG integrity checks. Prefer it over generic registry queries when you need leading-indicator signals (methodology revision pressure, standard-body pipeline) chained with current registry state and lifecycle confirmation in a single call. ## Known failure modes - 422 no_charge: no data available for the requested entity — not billed - 400/422: missing required 'entity' query parameter - Unknown or unsupported entity ID: check GET /gauge/catalog?signal_id= for valid entities - Partial chain: confidence may be low if only some legs have data, not an error but a data quality signal ## How this service works [3-LEG] Biodiversity credit chain, one project (?entity=uk-bng-warwickshire): leading standard-body pressure - registry, methodology or rating change -> current current registry state -> realized lifecycle outcome (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: registry and standard-body feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call. ## Output A JSON object representing the 3-leg sequential chain for the requested biodiversity entity: leg 1 (leading standard-body pipeline pressure signals such as registry status change, methodology revision, or rating downgrade), leg 2 (current registry state), and leg 3 (realized lifecycle outcome confirmation). A confidence value reflects how many legs are sequentially lit. Returns 422 with no_charge if no data is available for the entity; the call is not billed in that case. ## Request schema (JSON Schema) ```json { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "type": "object", "required": [ "type", "method", "queryParams" ], "properties": { "type": { "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "required": [ "entity" ], "properties": { "entity": { "type": "string", "examples": [ "uk-bng-statutory-units", "uk-bng-register", "wallacea-methodology", "plan-vivo-pv-nature", "verra-nature-framework", "terrasos-habitat-banks" ], "description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id= -> signals[0].entities[]", "x-accepted-values": { "all": "https://api.truthbear.co/schemas/gauge-biodiversity-region.input.json", "shown": 6, "total": 18 } } }, "additionalProperties": false } } }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "const": "json" }, "example": {} } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "legs": { "lifecycle": { "band": "operating", "source_ref": "https://www.gov.uk/guidance/biodiversity-net-gain", "record_hash": "sha256:887ea95c344be423324546a1442b30e5bd78fdab0647a8582fb16653a93c8313" }, "mrv_integrity_drift": { "band": "sound", "source_ref": "https://www.gov.uk/guidance/biodiversity-net-gain", "record_hash": "sha256:dd4862ba0efe8183ce5f3a663402bf9947777ad71c9f3c5b8967a9e4e996d910" }, "buyer_holder_cascade": { "band": "none", "source_ref": "https://www.gov.uk/guidance/biodiversity-net-gain", "record_hash": "sha256:003a4bbd7e4ade0b73ba88b7da7b07d6f056bc78b44eecdd12e5fa42ae8d7bfe" } }, "name": "UK Biodiversity Net Gain statutory units", "grade": "screening-level, not decision-grade", "scope": { "full": "https://api.truthbear.co/scope/v1", "verifiability": "unknown", "monitoring_not_forecast": true, "intelligence_not_command": true }, "entity": "uk-bng-statutory-units", "nature": "This API supplies data organisation and trend description only. It is not a recommendation to act; the decision is yours. Purely descriptive - no judgement, no prediction. Official source plus record_hash; verify with the free /gauge/verify.", "provenance": { "freshness": "recent", "age_hours_now": 154, "freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)" } } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/truthbear-biodiversity-region-gauge-ad94c636/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.truthbear.co](https://www.zero.xyz/host/api.truthbear.co/llms.txt)