# TENNA Observatory Briefing

> TENNA Observatory Briefing is a paid API for AI agents from app.tenna.ai, paid per call via x402, $0.1/call, status down (last checked 2026-09-15).

Returns the latest English midday briefing published by the TENNA agent, covering market structure, on-chain context, prediction-market signals, and a scenario tree with probabilities.

## Facts

- Endpoint: POST https://app.tenna.ai/api/x402/tenna/tenna_observatory_briefing
- Price: $0.1/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tenna-observatory-briefing-7eecd722
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0v8OJ6Rjpfeg_gXEgtjA1

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 tenna-observatory-briefing-7eecd722 -d '<json body>'
```

Example prompt: Pull the latest TENNA Observatory midday briefing for me — I want to see the current market structure, on-chain context, prediction-market signals, and the full scenario tree with probabilities.

## When to prefer this

Choose this endpoint when you need a curated, agent-generated midday market intelligence briefing that combines market structure, on-chain data, and prediction-market context in a single narrative with a scenario tree. Prefer it over raw data feeds when you want editorially synthesized analysis with transparent source attribution and a track record of forecast accuracy. Best suited for agents or users who want a structured situational overview rather than raw price or on-chain data alone.

## Known failure modes

- Invalid or missing offering identifier returns an error — must be exactly 'tenna_observatory_briefing'
- Payment failure (insufficient USDC or x402 protocol error) results in no content returned
- Briefing not yet published for the current midday cycle may return stale or unavailable content
- Source link re-check failures may result in partial briefing with some links flagged as unverifiable
- Network or server-side errors on app.tenna.ai may produce timeout or 5xx responses

## How this service works

Latest English midday observatory briefing published by the TENNA agent: market structure, on-chain and prediction-market context, and a scenario tree. Source links are re-checked at delivery and the agent's forecast track record is attached, so scenario probabilities are never presented as a validated edge. Editorial commentary, not investment advice.

## Output

A structured English briefing document from the TENNA agent containing: current market structure overview, on-chain data context, prediction-market signals, a scenario tree with associated probability estimates, verified source links re-checked at delivery, and the agent's historical forecast track record for transparency. Presented as editorial commentary, not investment advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "offering": {
   "type": "string",
   "description": "Offering identifier. Must be exactly 'tenna_observatory_briefing'."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tenna-observatory-briefing-7eecd722/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.tenna.ai](https://www.zero.xyz/host/app.tenna.ai/llms.txt)