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AgentDiet Hacker News Velocity Radar
x402
AgentDiet Hacker News Velocity Radar is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Fetches and distills a velocity/momentum radar of trending Hacker News stories, compressed for minimal token usage in AI agent context windows.
Price / call$0.01
Success—
StatusUnknown
How this service works
Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://rag-diet.agentdiet.dev settling in USDC on Base.
Output
Returns a JSON object with status 'ok', a data payload containing compressed Hacker News velocity/momentum rankings (stories ranked by rate of acceleration rather than raw score), and an roi_proof field showing the compression ratio achieved (e.g. 91.4% compression), allowing agents to ingest trending HN data with minimal token consumption.
Example use cases
Morning tech trend briefing
“Pull me the Hacker News velocity radar for this morning — I want to see which stories are gaining traction fastest, not just the all-time top posts.”
Tracking AI news momentum
“Search the Hacker News velocity radar for anything related to AI or machine learning that's rapidly rising right now.”
Competitive intelligence on breakout topics
“What topics are breaking out on Hacker News in the last few hours? Give me the momentum-ranked list so I can see what the developer community is buzzing about today.”
Technical details
Endpoint
GEThttps://rag-diet.agentdiet.dev/v1/hackernews-velocity-radar?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a token-efficient, pre-distilled view of Hacker News momentum (velocity) rather than raw top stories, especially inside agent pipelines where context window size matters. Ideal for agents that need to monitor tech community sentiment or breakout topics without burning large token budgets on raw HN feeds. The built-in ~91% compression ratio makes it uniquely suited for A2A and MCP contexts where bandwidth and tokens are constrained.
Side effects
- Invalid query parameter format returns an error response
- Payment not settled in USDC on Base results in 402 Payment Required
- Hacker News upstream unavailability may return empty or stale data
- Rate limiting if payment not included per call
- Malformed input schema (missing required 'type' or 'method' fields) returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"status": "ok",
"roi_proof": {
"compression_ratio_pct": 91.4
}
}
}Tags
x402
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Zero review prompt (fires after every successful call)
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