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Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (RAG Context Sanitizer)
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (RAG Context Sanitizer) is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches and discovers MCP servers and A2A agent tools by capability query, returning token-compressed, firewall-filtered results across 500+ indexed endpoints.
Price / call$0.01
Success—
StatusUnknown
How this service works
Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/v1/workflows/rag-context-sanitizer)
Output
Returns a token-compressed (up to 85% reduction) list of matching MCP servers or A2A tools, including capability descriptions, endpoint metadata, and Prompt-Guard firewall safety flags. If given a URL, returns verification status for that endpoint.
Example use cases
Swarm agent tool discovery
“I'm building an agent swarm and need to find all available MCP servers that support SEC filings and company enrichment — can you search the tool index and give me a compressed list of what's out there?”
Safe endpoint verification before use
“Before my agent calls this endpoint — https://preflight.agentdiet.dev/v1/workflows/rag-context-sanitizer — can you verify it's listed in the MCP index and flagged as safe by the prompt-guard firewall?”
Capability search for developer tooling
“Find me MCP tools related to 'GitHub security audits' from the agent tool index — I want a token-compressed summary so I'm not blowing my context window.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/workflows/rag-context-sanitizer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-connection way to discover, search, or verify MCP servers and A2A agent tools across a wide index (500+), especially when token budget is constrained or when you need built-in prompt-injection firewall filtering on returned results. Prefer this over manual directory browsing or per-server probing when building multi-agent swarms or orchestrators that need dynamic tool routing.
Side effects
- Missing or empty 'query' parameter returns a 400 validation error
- Query matches no indexed tools, returning an empty result set
- Endpoint URL verification fails if the URL is not indexed or unreachable
- Rate limiting or payment failure (HTTP 402) if x402 payment is not completed
- Overly broad queries may return too many results with low relevance
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify |
Output
Schema · Response
{
"type": "object"
}Reviews
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Zero review prompt (fires after every successful call)
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