# Medical Device Recall Chain (TruthBear) > Medical Device Recall Chain (TruthBear) is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14). Returns a 3-leg sequential chain of recall pressure signals, current clearance status, and realized lifecycle for a specific FDA-regulated medical device product line. ## Facts - Endpoint: GET https://api.truthbear.co/gauge/meddevice-region - Price: $0.25/call - Payment: x402 - Status: unknown - Last checked: 2026-09-14 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/medical-device-recall-chain-truthbear-ce612787 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uy3vlSxahcYNTAXK9NuBc 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 medical-device-recall-chain-truthbear-ce612787 ``` Example prompt: Can you pull the recall chain for the Philips DreamStation CPAP — I want to see the current recall pressure signals, FDA clearance status, and where it sits in its lifecycle right now? ## When to prefer this Use this endpoint when you need structured, multi-leg recall signal data for a specific FDA-regulated medical device product line, particularly when you want to assess both leading pressure indicators and confirmed lifecycle status together. Prefer this over general FDA search tools when you need a confidence-scored chain rather than a single data point, and when you need no-charge handling of missing data built in. ## Known failure modes - 422 no_charge returned when no data is available for the requested entity — call is not billed - Invalid or unrecognized entity ID causes no data match - Entity not in the supported catalog of ~20 monitored device product lines - Partial confidence score if only some legs have signal (e.g., leg 1 lit but legs 2-3 unavailable) - Network or upstream FDA data latency causing stale signals ## How this service works [3-LEG] Medical device recall chain, one product line (?entity=philips-dreamstation-cpap): leading recall pressure signals -> current current clearance status -> realized lifecycle from cleared to recalled to withdrawn (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: US FDA. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call. ## Output A JSON object containing a 3-leg sequential chain: leg 1 is leading recall pressure signals, leg 2 is current FDA clearance status, and leg 3 is the realized lifecycle stage (cleared → recalled → withdrawn). Includes a confidence score reflecting how many legs are lit in order. Returns 422 no_charge if no data is available (no billing on empty responses). ## Request schema (JSON Schema) ```json { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "type": "object", "properties": { "type": { "const": "http" }, "method": { "type": "string", "enum": [ "GET" ] }, "queryParams": { "type": "object", "additionalProperties": false, "properties": { "entity": { "type": "string", "description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id= -> signals[0].entities[]", "examples": [ "philips-dreamstation-cpap", "medtronic-heartware-hvad", "exactech-optetrak-knee", "exactech-connexion-gxl-hip", "allergan-biocell-breast-implant", "bayer-essure-contraceptive" ], "x-accepted-values": { "shown": 6, "total": 20, "all": "https://api.truthbear.co/schemas/gauge-meddevice-region.input.json" } } }, "required": [ "entity" ] } }, "required": [ "type", "method", "queryParams" ] }, "output": { "type": "object", "properties": { "type": { "const": "json" }, "example": {} }, "required": [ "type" ] } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "legs": { "lifecycle": { "band": "dead", "source_ref": "https://www.fda.gov/medical-devices/safety-communications/certain-philips-respironics-ventilators-bipap-and-cpap-machines-recalled-due-potential-health-risks", "record_hash": "sha256:cc7d5bbed15923f86a6df8fd7a880b042774236c1faf2d70d52330ea2c94c8cc" }, "adverse_event": { "band": "pre-recall-critical", "source_ref": "https://www.fda.gov/medical-devices/safety-communications/certain-philips-respironics-ventilators-bipap-and-cpap-machines-recalled-due-potential-health-risks", "record_hash": "sha256:4f017fff35d2c27b74eb687d2f01319b5366271971e60d724a4dbced3778dce2" }, "recall_cascade": { "band": "full-cascade", "source_ref": "https://www.fda.gov/medical-devices/safety-communications/certain-philips-respironics-ventilators-bipap-and-cpap-machines-recalled-due-potential-health-risks", "record_hash": "sha256:10ac2811241f9249e75b91f75cf6cfc0d5edd413151e1c05a95d67554ca5cc3d" } }, "name": "DreamStation CPAP/BiPAP", "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": "philips-dreamstation-cpap", "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": 28, "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/medical-device-recall-chain-truthbear-ce612787/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)