# AgentDiet Alpha Stream — Context Window Distiller

> AgentDiet Alpha Stream — Context Window Distiller 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).

Compresses and distills AI context windows via streaming, reducing token usage by up to 85-91% for A2A and MCP pipelines

## Facts

- Endpoint: GET https://rag-diet.agentdiet.dev/v1/alpha-stream?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-alpha-stream-context-window-distiller-0eb85144
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KiXXyI1M7VtJLZ3cycA71

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 agentdiet-alpha-stream-context-window-distiller-0eb85144
```

Example prompt: Use AgentDiet's alpha-stream to compress the content at this URL via GET so I can fit it in my context window — I need the distilled output and the compression ratio proof.

## When to prefer this

Choose this endpoint when an AI agent or pipeline needs to reduce token count before sending content to an LLM, particularly in A2A, MCP, or RAG workflows where context window limits are a bottleneck. It is especially useful when you need a verifiable compression ratio proof alongside the distilled output, and when paying per-call via x402/USDC micropayments is acceptable.

## Known failure modes

- Missing required 'input' field returns validation error
- Invalid or unreachable 'target' URL results in fetch failure
- Payment not settled in USDC on Base causes 402 Payment Required response
- Unsupported HTTP method (not GET or POST) causes rejection
- Empty or already-minimal content may yield low compression ratio

## 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 a 'data' field containing the distilled/compressed content, a 'status' field indicating success, and a 'roi_proof' object showing the compression_ratio_pct (e.g. 91.4%) achieved during distillation.

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-alpha-stream-context-window-distiller-0eb85144/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rag-diet.agentdiet.dev](https://www.zero.xyz/host/rag-diet.agentdiet.dev/llms.txt)