# TruthBear Shadow Chatter

> TruthBear Shadow Chatter is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Fetches raw public-channel social chatter for a given topic from the last 48 hours, including per-message metadata, a grey_ref hash, and an LLM-generated trend summary with echo-chamber concentration index.

## Facts

- Endpoint: GET https://api.truthbear.co/shadow/chatter
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/truthbear-shadow-chatter-0d5976a6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7sY0pyOeV60KfYvgln8wt

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-shadow-chatter-0d5976a6
```

Example prompt: Pull the latest 48-hour public chatter for the topic 'tariff' — I want the raw messages with their source URLs and timestamps, plus the trend summary and echo-chamber concentration index.

## When to prefer this

Choose this endpoint when you need raw, unfiltered public-channel chatter for a specific topic within the last 48 hours, complete with verifiable grey_ref hashes and an echo-chamber concentration metric. It is well-suited for agents that need both raw message provenance and a high-level LLM trend narrative in a single call. Prefer alternatives (like a structured news API or a verified facts service) when you need authoritative, fact-checked information or forecasts — this endpoint explicitly disclaims that its content is unofficial and unverified.

## Known failure modes

- 422 no_charge: no messages found for the topic in the 48-hour window — call is not billed
- 422 no_charge: topic not in the in-stock catalog (check /shadow/catalog first)
- Invalid or missing topic query parameter causing a 400-level error
- Network timeout or 5xx if the aggregation pipeline is overloaded

## How this service works

Unverified public-channel chatter for one topic (?topic=), posted in the last 48 hours. Returns every raw message with its platform, source URL and timestamp, plus a grey_ref you can recompute as sha256(url + NUL + ts + NUL + text), and an LLM trend summary with an echo-chamber concentration index. NOT official fact and NOT a forecast; the summary is not offline-reproducible - only the per-item grey_ref is. Nothing posted in the window -> 422 no_charge, not billed. $0.02 per call.

## Output

A JSON response containing every raw message posted in the last 48 hours for the requested topic, each with its platform name, source URL, timestamp, and a sha256-based grey_ref hash (sha256(url + NUL + ts + NUL + text)). Also includes an LLM-generated trend summary and an echo-chamber concentration index. Returns HTTP 422 no_charge (unbilled) if no posts exist in the window.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/truthbear-shadow-chatter-0d5976a6/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)