# AgentToll Attention Momentum (OSINT)

> AgentToll Attention Momentum (OSINT) is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Scores a topic or keyword for viral attention momentum across Hacker News and Reddit, returning a momentum score and hit counts.

## Facts

- Endpoint: POST https://agenttoll.dev/paid/osint/attention-momentum
- 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/agenttoll-attention-momentum-osint-2577e352
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__uVf6ZfekOGpM9P71H9S7

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 agenttoll-attention-momentum-osint-2577e352 -d '<json body>'
```

Example prompt: Can you check the attention momentum score for 'AI agents' right now — I want to know if it's going viral, how many Hacker News and Reddit hits it has, and what the momentum score is?

## When to prefer this

Choose this endpoint when you need a fast, quantified signal of real-time attention momentum for a specific topic across Hacker News and Reddit — the two highest-signal communities for tech and startup trends. Prefer it over generic social listening tools when you need a single numeric momentum score suitable for programmatic decision-making (e.g. timing a launch, routing research effort, or triggering alerts). It is particularly useful for OSINT pipelines, content scheduling agents, and investor signal workflows where $0.02/call economics make high-frequency polling viable.

## Known failure modes

- Topic or keyword not provided — request returns an error or empty result
- Upstream Hacker News or Reddit APIs unavailable — may return zero counts or an error
- Very niche or obscure topics may return zero hits and a momentum_score of 0 with viral=false
- Rate limiting or payment failure via x402 protocol blocks the call
- Ambiguous multi-word keywords may yield low-quality signal due to loose matching

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns a JSON object with: a boolean 'viral' flag indicating whether the topic has crossed a virality threshold, 'hn_hits' (integer count of relevant Hacker News mentions), 'reddit_hits' (integer count of relevant Reddit mentions), and 'momentum_score' (float combining recency and volume of attention across both platforms).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "query": {
       "type": "string",
       "maxLength": 200
      },
      "window": {
       "enum": [
        "1h",
        "6h",
        "24h"
       ],
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "viral": true,
  "hn_hits": 3,
  "reddit_hits": 5,
  "momentum_score": 2.4
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-attention-momentum-osint-2577e352/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)