# TruthBear DePIN Region Gauge

> TruthBear DePIN 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).

Runs a 3-leg sequential chain analysis on a DePIN network (e.g. Helium) to detect reward-claim attrition, measure active node supply, and assess lifecycle wind-down or ghost-state risk.

## Facts

- Endpoint: GET https://api.truthbear.co/gauge/depin-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-depin-region-gauge-5a1c34f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xrsxh-_O6cn5emgLQZ5v1

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-depin-region-gauge-5a1c34f0
```

Example prompt: Run the TruthBear 3-leg DePIN chain analysis on Helium and tell me how many legs are lit — I want to know if reward-claim attrition is picking up and whether active nodes are starting to ghost or wind down.

## When to prefer this

Use this endpoint when you need the earliest onchain signal of DePIN network health deterioration — specifically reward-claim attrition leading to node wind-down or ghost states. Prefer this over token-price feeds or general crypto APIs when the goal is to detect lifecycle decay in a DePIN network before it becomes visible in price. Best for monitoring Helium, io-net, Render, Akash, Filecoin, or Helium Mobile node participation trends using official network and onchain data.

## Known failure modes

- 422 no_charge returned when no data is available for the requested entity — not billed
- Invalid or unsupported entity ID results in an error (check /gauge/catalog?signal_id= for valid entities)
- Partial chain result if only some legs have data — confidence score will reflect fewer lit legs
- Network or provider downtime may delay onchain data freshness

## How this service works

[3-LEG] DePIN chain, one network (?entity=helium): leading reward-claim attrition, nodes stopping claims - the earliest signal -> current active nodes and paid supply, NOT token price -> realized lifecycle to wind-down or ghost state (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: onchain and official network data. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.

## Output

A structured JSON response containing up to 3 sequential chain legs: (1) leading reward-claim attrition signal, (2) current active node count and paid supply, (3) realized lifecycle assessment toward wind-down or ghost state. Confidence score reflects how many legs are lit in order. Returns HTTP 422 with no charge if data is unavailable.

## 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": [
        "helium",
        "helium-mobile",
        "render",
        "io-net",
        "akash",
        "filecoin"
       ],
       "description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[0].entities[]",
       "x-accepted-values": {
        "all": "https://api.truthbear.co/schemas/gauge-depin-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": {
   "lifecycle": {
    "band": "operating",
    "source_ref": "https://www.helium.com/",
    "record_hash": "sha256:a1a1a78b863f050e7390ba5322cd6ac2301a593770179703fd69bcc39f0f625e"
   },
   "reward_churn": {
    "band": "healthy",
    "source_ref": "https://www.helium.com/",
    "record_hash": "sha256:246697d89625a63918ef428698b31196c02ed64f7574eab4d64e461500133ea0"
   },
   "downstream_exposure": {
    "band": "no_exposure",
    "source_ref": "https://www.helium.com/",
    "record_hash": "sha256:7dc54815ef50eb2642ea1531a7a9c4c99327bc78fc5573be6e719460e5f3dd9c"
   }
  },
  "name": "Helium",
  "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": "helium",
  "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": 102,
   "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-depin-region-gauge-5a1c34f0/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)