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AgentDiet Prompt Firewall — A2A Context Window Distiller
x402
AgentDiet Prompt Firewall — A2A Context Window Distiller is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Compresses and filters prompt/context text to reduce token count by up to 91% before forwarding to downstream LLMs or agents
Price / call$0.005
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 a 'data' field containing the compressed/distilled text output, a 'status' field ('ok' on success), and an 'roi_proof' object showing the compression_ratio_pct (e.g. 91.4%) achieved — letting callers verify token savings.
Example use cases
Shrinking RAG chunks before LLM call
“Take these retrieved document chunks and compress them through the AgentDiet prompt firewall before I stuff them into my Claude context window — I need the distilled version and the compression ratio proof.”
Cutting costs on high-volume agent pipelines
“My agent is burning through tokens because the system prompt is massive. Run it through the AgentDiet context distiller and tell me how much I can compress it — I want to see the roi_proof percentage.”
Prompt sanitization before model routing
“Before I forward this user-supplied prompt to my LLM backend, pass it through the AgentDiet firewall endpoint to strip bloat and filter it — return the compressed output and the compression ratio.”
Technical details
Endpoint
GEThttps://rag-diet.agentdiet.dev/v1/prompt-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, measurable context compression before passing prompts or RAG content to an LLM, especially in cost-sensitive high-volume agentic pipelines where token reduction ROI needs to be proven. It is particularly valuable when operating within x402/L402 micropayment infrastructure on Base/USDC and needing a pay-per-call firewall layer rather than a self-hosted solution.
Side effects
- Missing required 'text' query parameter returns an error or empty data object
- Input text exceeding size limits may be rejected or truncated
- Payment failure via x402/L402 (insufficient USDC balance on Base) blocks the request
- Malformed input schema (wrong 'type' or 'method' fields) causes validation rejection
- Service unavailability returns non-200 status with no roi_proof
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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