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AgentDiet Preflight Certify — Context Compression Pre-Check
x402
AgentDiet Preflight Certify — Context Compression Pre-Check 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).
Validates and certifies whether a given URL's content is eligible for context-window compression/distillation before committing to a full diet run
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 a status field ('ok'), a data object containing certification details, and an roi_proof object that includes the expected compression_ratio_pct (e.g. 91.4%), indicating how much the content can be compressed before a full diet run is committed.
Example use cases
Pre-check before expensive compression run
“Can you do a preflight check on https://docs.mycompany.com/api-reference to certify it's eligible for context distillation and show me the expected ROI before I commit to the full token diet?”
Validate RAG source eligibility
“I want to feed https://arxiv.org/abs/2401.00001 into my RAG pipeline but the paper is huge — can you certify it for compression first and tell me how much I can shrink the context window?”
Agent cost optimization pre-check
“Before my agent processes this lengthy report at https://reports.example.com/q4-analysis, run a preflight to verify it can be de-bloated and what compression ratio to expect so I know if it's worth it.”
Technical details
Endpoint
GEThttps://rag-diet.agentdiet.dev/v1/preflight/certify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you want to assess the viability and expected ROI of context-window compression for a specific URL before committing to a full (potentially more expensive) AgentDiet distillation run. Ideal for cost-conscious agents that want to gate on compression eligibility, or when building pipelines that need a certification step before downstream processing. Prefer this over jumping straight to the full compression endpoint when the document size or compressibility is unknown.
Side effects
- Missing or invalid URL query parameter returns an error or empty data object
- URL is unreachable or returns non-200 status, causing certification failure
- Content type not supported for compression (e.g. binary files, paywalled pages) may return failed certification
- Payment not settled in USDC on Base may block access with a 402 response
- Malformed input object (missing required 'type' or 'method' fields) returns schema 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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