# TruthBear Gauge: AI Dependency Region > TruthBear Gauge: AI Dependency Region is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13). Returns a 3-leg sequential chain assessment of an AI model's deprecation lifecycle: upcoming deprecation notices with sunset date, current availability, and realized lifecycle days alive. ## Facts - Endpoint: GET https://api.truthbear.co/gauge/dependency-region - Price: $0.25/call - Payment: x402 - Status: unknown - Last checked: 2026-09-13 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/truthbear-gauge-ai-dependency-region-10c9a204 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3Xk_L1pFmqRbPPO99y6WJ 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-gauge-ai-dependency-region-10c9a204 ``` Example prompt: Pull the 3-leg deprecation chain for openai-gpt-4-32k — I want to see the official sunset date the vendor scheduled, its current availability status, and how many days it's been alive since launch. ## When to prefer this Use this endpoint when you need authoritative, vendor-sourced deprecation lifecycle data for a specific AI model, including the exact sunset date the publisher scheduled. Prefer this over general web searches when you need structured, source-cited deprecation chain data with a confidence indicator, especially for dependency auditing or automated model-selection workflows. Best suited for individual model lookups; not a forecast or advisory service. ## Known failure modes - 422 no_charge: no data available for the specified entity ID — request is not billed - Invalid or unrecognized entity ID not in the catalog — use GET /gauge/catalog?signal_id= to enumerate valid entities - Partial confidence: only 1 or 2 legs return data, confidence score reflects the number of lit legs - Network or upstream vendor notice source unavailable — partial chain returned ## How this service works [3-LEG] AI dependency chain, one dependency (?entity=openai-text-davinci-003): leading deprecation notices INCLUDING the sunset date the publisher itself scheduled -> current current availability -> realized lifecycle to deprecation, days alive (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: vendor notices, source URL per record. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call. ## Output A 3-leg sequential chain response containing: (1) leading deprecation notices with the vendor-scheduled sunset date and source URL, (2) current availability status of the model, (3) realized lifecycle in days alive as a confirmation gate. Confidence score reflects how many of the three legs returned data. Returns 422 with no_charge if no data is available for the requested entity. ## Request schema (JSON Schema) ```json { "$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": [ "openai-text-davinci-003", "openai-davinci-gpt3-base", "openai-code-davinci-002", "openai-gpt-4-vision-preview", "openai-gpt-3.5-turbo-0301", "openai-gpt-4-32k" ], "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-dependency-region.input.json", "shown": 6, "total": 20 } } }, "additionalProperties": false } } }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "const": "json" }, "example": {} } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "legs": { "cascade": { "band": "exposed", "source_ref": "https://platform.openai.com/docs/deprecations", "record_hash": "sha256:6994c98ef3317b95ba9c2b533b36f3b22b0b358bdccadd6b9e855570c39a8c90" }, "lifecycle": { "band": "ended", "source_ref": "https://platform.openai.com/docs/deprecations", "record_hash": "sha256:2f0f6e0b17d4155f8371f5d5e5b976ae9f4a4cd3b76fca82366dd4d0993a1308" }, "deprecation": { "band": "sunset-scheduled", "source_ref": "https://platform.openai.com/docs/deprecations", "record_hash": "sha256:cf135f73c6c5189a5518471108f344f5a35f0b1e4dd339bfa2905dd768335c60" } }, "name": "OpenAI - text-davinci-003 (GPT-3.5 completions)", "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": "openai-text-davinci-003", "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": 120, "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-gauge-ai-dependency-region-10c9a204/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)