# tensorfeed.ai Research Publication Velocity

> tensorfeed.ai Research Publication Velocity is a paid API for AI agents from tensorfeed.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns per-institution AI research publication velocity comparing a 30-day window to a 365-day baseline, with direction classification, notable movers, and breakdowns by country and affiliation type.

## Facts

- Endpoint: GET https://tensorfeed.ai/api/premium/research/velocity
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tensorfeed-ai-cfe626ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ChaGR96Q3arIq7RdFbVAX

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 tensorfeed-ai-cfe626ec
```

Example prompt: Which AI research institutions are accelerating their publication rate right now — show me the notable movers with their 30-day velocity compared to their yearly baseline, broken down by country and affiliation type.

## When to prefer this

Use this endpoint when you need to track which AI research institutions are accelerating or decelerating their publication output relative to their own historical baseline. Ideal for competitive intelligence on AI labs, geopolitical analysis of national AI research momentum, or monitoring shifts in the academic AI research landscape. Prefer over general paper-count queries when directional velocity and institutional comparison matter.

## Known failure modes

- Payment not included or insufficient — 402 response requiring x402 micropayment
- Upstream OpenAlex data temporarily unavailable — 503 or stale data warning
- Rate limiting if called too frequently in succession
- No institutions match filter criteria — empty notable movers list

## How this service works

Per-institution AI research publication velocity. 30-day window vs 365-day baseline with direction classification, notable movers, plus by-country and by-affiliation-type breakdowns. OpenAlex CC0. The "which AI labs are accelerating" feed.

## Output

A structured feed of per-institution AI research publication velocity scores comparing a 30-day window against a 365-day baseline. Includes direction classifications (accelerating/decelerating/stable), a list of notable movers, and breakdowns by country and by affiliation type (e.g. university, corporate lab, government). Powered by OpenAlex CC0 data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tensorfeed-ai-cfe626ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tensorfeed.ai](https://www.zero.xyz/host/tensorfeed.ai/llms.txt)