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Paid x402 help: debug 402 errors, review MCP manifests, rewrite Bazaar listings. USDC on Base.
About
Paid x402 help: debug 402 errors, review MCP manifests, rewrite Bazaar listings. USDC on Base.
Remote endpoints: streamable-http: https://x402orcle.vercel.app/mcp
Security Report
x402 Oracle is a paid MCP and HTTP 402 consultation server on Base USDC that gates paid tools through an x402 facilitator and CDP API key auth, with permissions (outbound HTTP to the facilitator, env vars for keys) matching its purpose. No exfiltration, shell execution, or hardcoded secrets were found in the reviewed files, though the analysis is partial because catalog, env, CDP JWT, and MCP route code were not included, so the final score is provisional. Supply chain analysis found 9 known vulnerabilities in dependencies (3 critical, 2 high severity).
9 files analyzed · 14 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install & Connect
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
Documentation
View on GitHubFrom the project's GitHub README.
x402 Oracle (x402orcle)
402 is the answer. The Oracle is how you ask.
Paid MCP + HTTP 402 wisdom market for x402 / MCP / A2A / Bazaar. Seller-only public host. Base USDC (eip155:8453).
Discover
| Surface | Path |
|---|---|
| Landing | / |
| Catalog | /.well-known/x402 |
| MCP | /mcp streamable HTTP JSON-RPC + /.well-known/mcp.json |
| A2A | /.well-known/agent-card.json |
| Fund | /.well-known/funding.json |
| LLMs | /llms.txt |
| Agents | /agents.txt |
| OpenAPI | /openapi.json (x-payment-info) |
Tools
Free: oracle_health, oracle_pricing
Paid: oracle_ask $0.10 · oracle_diagnose_402 $0.50 · oracle_review_mcp $3 · oracle_bazaar_rewrite $1.50 · complete_oracle_task $10 (clamped to MAX_PRICE_USD=25)
Paid replies are a wisdom envelope: verdict, wisdom, implementation_prompt, risk, citations, receipt.
Env (never a spend key)
X402_PAY_TO=0x… # 42-char address only
X402_NETWORK=eip155:8453
X402_FACILITATOR_URL=https://api.cdp.coinbase.com/platform/v2/x402
CDP_API_KEY_ID= # Secret API key id (JWT). Not a wallet key.
CDP_API_KEY_SECRET=
MAX_PRICE_USD=25
DEMO_MODE=true # local DemoFacilitator
Do not set EVM_PRIVATE_KEY on Vercel/Render. Buyer keys stay on the operator laptop.
x402.org/facilitator is not the default production path for mainnet EVM.
Run
cp .env.example .env
pnpm install
pnpm --filter @x402orcle/oracle-brain test
pnpm --filter @x402orcle/mcp test
pnpm --filter @x402orcle/mcp dev # :4021
pnpm --filter @x402orcle/web dev # :3000 landing
Unpaid consult → HTTP 402 + PAYMENT-REQUIRED (base64 JSON, extensions.bazaar).
Demo: POST /v1/demo/mint-payment then retry with PAYMENT-SIGNATURE.
Bazaar
Cataloging is settlement-triggered. Validate first (no pay):
curl -sS -X POST https://api.cdp.coinbase.com/platform/v2/x402/validate \
-H 'content-type: application/json' \
-d '{"resource":"https://YOUR_HOST/api/consult/oracle_ask","method":"POST"}'
Then one mainnet seed settle from a local burner. No settlement = no rank.
Monorepo
apps/web Next.js App Router landing + discovery + 402
apps/mcp streamable-HTTP paid MCP + HTTP twins
packages/oracle-brain
FOSS: @x402/mcp createPaymentWrapper + x402ResourceServer, @x402/extensions/bazaar declareDiscoveryExtension (see apps/mcp/src/x402-foss.ts).
Legal
Payment for delivered consult artifacts or a voluntary tip. Not a token, not equity, not a raise.
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