# kair-os.trade Early Signal (Base Token)

> kair-os.trade Early Signal (Base Token) is a paid API for AI agents from kair-os.trade, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns early social and on-chain signals for a Base token address, including X mention counts across three 24h windows, sentiment tone, mention acceleration, and canonical Uniswap pool balances.

## Facts

- Endpoint: POST https://kair-os.trade/advance-signal/signal?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kair-os-trade-early-signal-base-token-0f5a2aa6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m5ZU0YNj_VnaY_8i76AtV

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 kair-os-trade-early-signal-base-token-0f5a2aa6 -d '<json body>'
```

Example prompt: Can you pull the early signal report for Base token 0x4200000000000000000000000000000000000006 — I want to see how X mentions are trending across the last three 24-hour windows, the mention acceleration, sampled sentiment tone, and current pool balances?

## When to prefer this

Choose this endpoint when you need a multi-dimensional early-signal snapshot combining social mention velocity on X with on-chain pool state for a specific Base token, especially when evaluating whether a token is gaining pre-trend momentum. It is particularly useful for low-cap or newly launched Base tokens where traditional price/volume signals are sparse. Prefer this over pure on-chain endpoints when social context matters, and over pure social APIs when you also need pool balance confirmation.

## Known failure modes

- Invalid or non-ERC-20 contract address returns validation error
- Provider query exhaustion may cause acceleration metric to be unavailable or unreliable
- Token with no X mentions returns empty post array and zero counts
- No Uniswap V3 pool found for token yields missing pool balance data
- Payment not received or insufficient USDC results in 402 rejection

## How this service works

Base token early-signal evidence: exact-address X mentions across three 24h windows, measured acceleration only for an exhausted provider query, sampled tone, and canonical on-chain pool balances. At most 40 returned posts. Experimental descriptive score interval; no calibrated price forecast. Smart-wallet flow and new holders remain unknown.

## Output

Returns up to 40 sampled X posts mentioning the token, mention counts broken down across three 24-hour windows, a derived mention acceleration figure (for non-exhausted query states), sampled sentiment tone, canonical on-chain pool balances for the token, and an experimental descriptive score interval. Note: smart-wallet flow and new holder counts are not included; no calibrated price forecast is provided.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token": {
   "type": "string",
   "pattern": "^0x[0-9a-fA-F]{40}$"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kair-os-trade-early-signal-base-token-0f5a2aa6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kair-os.trade](https://www.zero.xyz/host/kair-os.trade/llms.txt)