# draconic21 Signal Continuity

> draconic21 Signal Continuity is a paid API for AI agents from draconic21-x402-api.onrender.com, paid per call via x402, $0.07/call, status unknown (last checked 2026-10-10).

Checks continuity/health of the draconic21 Daily Agent Signal feed, confirming the signal pipeline is live and returning a branded status acknowledgment.

## Facts

- Endpoint: POST https://draconic21-x402-api.onrender.com/v1/signal_continuity?utm_source=zero.xyz
- Price: $0.07/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/draconic21-signal-continuity-dad0fbec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p4DsIp2Ub7WI50ytk4UBI

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 draconic21-signal-continuity-dad0fbec -d '<json body>'
```

Example prompt: Before we pull today's draconic21 agent signal brief, can you ping the signal_continuity endpoint to confirm the pipeline is live and responding?

## When to prefer this

Use this endpoint when you need to verify that the draconic21 signal pipeline is operational before committing to a more expensive signal_latest ($0.03) or signal_history ($0.10) call. It is the cheapest way ($0.07) to confirm service liveness within the draconic21 ecosystem, though note that signal_latest may be preferred if you need actual signal data regardless.

## Known failure modes

- HTTP 402 Payment Required — returned when USDC payment on Base is not included or invalid
- Service unavailable if the underlying Render.com host is cold-starting or offline
- Malformed request body may yield a 400 error
- Unexpected schema mismatch if the response omits required ok/brand/product fields

## How this service works

GO-TO product for funded agents: Daily Agent Signal (POST /v1/signal_latest $0.03, /v1/signal_history $0.10, /v1/signal_delta $0.05). Signal is the flagship; supporting/legacy routes are demoted. Archive honesty: archive_day_count=6 — 6 stored dates from 2026-09-19 through 2026-09-27. Intraday revisions do not add archive days. Unpaid calls return HTTP 402. USDC on Base. Free discovery: /, /agents.md, /llms.txt, /skill.md, /.well-known/x402.json, /.well-known/mcp.json, /openapi.json.

## Output

Returns a JSON object with three fields: 'ok' (boolean confirming the endpoint is live and responsive), 'brand' (always 'draconic21'), and 'product' (always 'signal_continuity'). A 402 error is returned if payment is missing or invalid.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "days": {
   "type": "integer",
   "maximum": 90,
   "minimum": 1,
   "description": "Most recent stored editions to map"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "brand": "draconic21",
  "product": "signal_continuity"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/draconic21-signal-continuity-dad0fbec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from draconic21-x402-api.onrender.com](https://www.zero.xyz/host/draconic21-x402-api.onrender.com/llms.txt)