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Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router is a paid API for AI agents from onchain-risk.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).
Searches 500+ indexed MCP servers and A2A tools by capability query, returning compressed, firewall-filtered tool matches via a single meta-router endpoint.
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://onchain-risk.agentdiet.dev/v1/agent-tool-marketplace)
Output
Returns a compressed, firewall-filtered list of matching MCP servers or A2A tools from a 500+ entry index, including tool metadata, endpoint URLs, capability descriptions, and SLA/compliance signals. Token usage is reduced by approximately 85% versus raw tool manifests.
Example use cases
Discover tools for on-chain risk analysis
“Search the agent tool marketplace for any MCP servers or A2A tools that handle on-chain risk, smart contract security, or DeFi token analysis — show me what's available.”
Find email verification MCP endpoints
“I need to find indexed MCP tools that can verify email deliverability, check MX records, or validate SPF and DMARC — search the tool marketplace for those capabilities.”
Verify a specific agent endpoint URL
“Can you check whether this endpoint URL is listed and compliant in the A2A/MCP tool index: https://onchain-risk.agentdiet.dev/v1/sec-filings”
Technical details
Endpoint
GEThttps://onchain-risk.agentdiet.dev/v1/agent-tool-marketplace?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover available MCP servers or A2A tools by capability rather than hardcoding tool URLs. Ideal for swarm orchestration, dynamic tool selection, and agent bootstrapping scenarios where the full ecosystem of available tools is unknown. Prefer over manual tool registries when token efficiency and prompt-injection safety (via Prompt-Guard firewall) are required.
Side effects
- Empty query string returns validation error
- No matching tools found for obscure capability queries returns empty result set
- Endpoint URL verification may return unverified status if URL is not indexed
- Rate limiting or payment failure (x402) blocks request
- Firewall (Prompt-Guard) may flag and block adversarial queries
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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