rfc_check — x402 checks MCP Tool
rfc_check
(rfc check) is one of 57 tools on the
x402 checks
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call rfc_check from your client
- Claude Code x402 checks rfc_check run in your project directory
- Claude Desktop x402 checks rfc_check ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor x402 checks rfc_check ~/.cursor/mcp.json
- VS Code x402 checks rfc_check .vscode/mcp.json
- Zed x402 checks rfc_check ~/.config/zed/settings.json
- Windsurf x402 checks rfc_check ~/.codeium/windsurf/mcp_config.json
- Cline x402 checks rfc_check ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI x402 checks rfc_check ~/.gemini/settings.json
- Grok x402 checks rfc_check .mcp.json (in your project root)
- ChatGPT x402 checks rfc_check Settings → Connectors → Advanced → Developer mode
- Claude.ai x402 checks rfc_check Settings → Connectors → Add custom connector
- LangChain x402 checks rfc_check pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http x402-checks https://api.code402.dev/mcpOther tools on this server
- crypto_ticker
- erc20_balance
- fx_spot_price_oracle
- block_info
- tx_activity
- token_contract_risk
- clean_markdown_scraper
- context_distill
- instant_json_schema_verifier
- balance_check
- calculate_fx_savings
- iban_check
- lei_check
- vat_mod97_check
- swift_bic_check
- batch_validate
- vendor_onboarding_pack
- india_supplier_check
- pre_disbursement_guard
- gstin_check
- ifsc_check
- sanctions_address_screen
- company_number_format
- aba_routing_check
- ein_format_check
- abn_check
- e164_check
- sedol_check
- isin_check
- ean13_check
- cnpj_check
- uscc_check
- japan_corp_check
- kra_pin_check
- iso4217_currency_check
- upi_vpa_check
- pan_format_check
- uae_trn_check
- china_supplier_check
- japan_supplier_check
- latam_supplier_check
- gulf_supplier_check
- africa_supplier_check
- rent_deposit_guard
- rental_listing_risk
- rental_verdict
- reconcile
- create_b2b_invoice
- get_b2b_invoice
- simulate_spend_sentinel
- aci_trust_lookup
- csp_commitment_create
- iso20022_validate
- iso20022_to_x402_intent
- check_price
- receipt_verify
This list was read from the server itself, by connecting to it and calling tools/list on 5 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.