Onyx Mcp MCP Server — 67 Tools with Risk Policies

// ALL 67 ONYX MCP TOOLS

READ 55 tools

Read onyx_agent_audit_trail Full payment + action audit trail for any agent wallet on Base. Returns every USDC outflow with resolved x4... Read onyx_agent_budget_tracker Per-wallet USDC spend tracker. Given a wallet address and direction (outflows / inflows / both), scans USDC... Read onyx_agent_id Look up an agent (EVM wallet) and return a reputation card: x402-style USDC settlements in the last ~24h wi... Read onyx_aml_screen KYC/AML sanctions + risk screen for any EVM address. Returns OFAC sanctions hit (via Chainalysis on-chain o... Read onyx_base_bridge_quote Cross-chain bridge quote starting from Base. Best-route across ~30 bridges (Across, Hop, Stargate, cBridge,... Read onyx_base_contract_verify Contract verification + ABI metadata for any Base address. Returns is_verified, contract name, compiler ver... Read onyx_base_dex_pair_lookup Every DEX pair for a Base token: DEX name, price USD, 24h volume, liquidity USD, price-change percentages (... Read onyx_base_event_logs Fetch contract event logs from Base mainnet via eth_getLogs. Returns structured logs with topics, raw data,... Read onyx_base_swap_quote Best-route swap quote on Base across all major DEXes (Uniswap V2/V3, Aerodrome, BaseSwap, PancakeSwap, plus... Read onyx_base_token_risk_scan Risk-scan any ERC-20 token on Base mainnet. Returns ownership status (renounced or active owner address), m... Read onyx_base_tx_decode Fetch a Base mainnet transaction by hash and return a human-readable summary: from/to, value (ETH + USD-est... Read onyx_base_tx_explainer Decode a Base mainnet transaction into a human-readable summary. Returns a one-line plain-English descripti... Read onyx_base_tx_simulator Simulate a Base mainnet transaction before sending it. Returns success/revert prediction, the revert reason... Read onyx_bazaar_compare Side-by-side comparison of paid agent tools across the x402 ecosystem. Filter by keyword (e.g. 'captcha', '... Read onyx_browser_eval Evaluate a JavaScript expression on the current CDP-controlled Chrome page and return the result by value. ... Read onyx_browser_extract Read the current CDP-controlled Chrome page and return the visible text content plus a structured summary o... Read onyx_browser_screenshot Capture a PNG screenshot of the current CDP-controlled Chrome page and return it as base64. Use to feed a v... Read onyx_dns_lookup Resolve a domain to its A/AAAA records, or reverse-resolve an IP to its hostname. Useful for validating a d... Read onyx_email_validate Validate an email address: RFC-5322 syntax check, domain DNS resolution (does the domain exist?), and dispo... Read onyx_facilitator_health Live up/down + latency probe for all 5 known x402 facilitators (Coinbase CDP, x402.org public, xpay.sh, cro... Read onyx_fact_check Fact-check any claim by fetching real-time web evidence. Returns supporting sources, contradicting sources,... Read onyx_hash_compute Compute md5, sha1, sha256, sha512, and sha3-256 of any text or base64-encoded bytes. Returns each digest as... Read onyx_ip_geolocate Geolocate any public IPv4/IPv6 address — country, region, city, lat/lon, timezone, ISP, ASN, mobile/proxy/h... Read onyx_jwt_decode Decode a JWT (header + payload) without verifying the signature. Returns the algorithm, key id, all claims ... Read onyx_mcp_catalog_diff Side-by-side tool catalog diff between any two MCP servers. Fetches each server's /manifest (with /openapi.... Read onyx_mcp_health Probe any public MCP / x402 server and return a structured health snapshot: endpoint latencies, content typ... Read onyx_mcp_meta_call Pre-flight inspector for ANY x402 tool call. Pass target URL + optional caller wallet, get back: live 402 p... Read onyx_mcp_oauth_audit OAuth 2.1 + RFC 7591 DCR compliance audit for any MCP server. Probes the 5 standard discovery + registratio... Read onyx_mcp_registry_status Cross-registry listing audit for any MCP server. Checks Coinbase Bazaar (x402 discovery), Smithery, Glama, ... Read onyx_mcp_router FIRST MCP meta-router. Describe a capability in plain English ('Base tx explainer', 'captcha OCR', 'DEX swa... Read onyx_paper_synthesis Structured synthesis across N academic papers. Input: 2-10 OpenAlex IDs or DOIs. Output: per-paper metadata... Read onyx_partnership_check Where does Onyx plug into Company X's stack? Probes their domain + CDP discovery + awesome-x402/awesome-mcp... Read onyx_pm_settlement_watch Prediction-market state lookup — current odds, volume, liquidity, resolution state, and anomaly flags for a... Read onyx_research_intel Research intel — has someone solved X already? Queries 240M+ academic works via OpenAlex (includes arXiv pr... Read onyx_robots_check Fetch a domain's robots.txt and report whether a given path is allowed for a given user-agent. Returns the ... Read onyx_skill_bundle Plan a multi-tool agent workflow under one x402 budget cap. Given a list of tool endpoints (any x402 server... Read onyx_solana_jupiter_quote Best-route swap quote on Solana via Jupiter aggregator. Pass inputMint + outputMint + amount (in input mint... Read onyx_solana_token_metadata Resolve name + symbol + decimals + total supply for any SPL token on Solana mainnet. Reads the SPL Mint acc... Read onyx_solana_token_risk_scan Rug-vector risk scan for any SPL token on Solana mainnet. Checks mint authority (active = can mint unlimite... Read onyx_solana_tx_explainer Decode a Solana mainnet transaction into a human-readable summary. Returns a one-line plain-English descrip... Read onyx_solana_wallet_activity Recent on-chain activity for any Solana wallet. Returns the last N signatures (default 25, max 100) with sl... Read onyx_solve_captcha Solve an image-based text captcha and return the recognized text. Works on standard alphanumeric captchas (... Read onyx_token_metadata ERC-20 token metadata lookup on Base mainnet: name, symbol, decimals, and total supply for any contract add... Read onyx_url_text Fetch any public URL and return the readable text content stripped of HTML/scripts/styles. Use when an agen... Read onyx_url_unshorten Follow HTTP redirects on any URL and return the final destination + the full redirect chain. Use when an ag... Read onyx_verify_explain Diagnose a failing x402 v2 /verify. Decodes a captured X-PAYMENT header, runs 10 rules (decode, schema, net... Read onyx_whois Domain whois via the modern RDAP protocol — registrar, creation/expiry dates, nameservers, registrant count... Read onyx_x402_chain_picker Pick the optimal chain for an x402 USDC payment. Given target amount + agent's available chains, ranks by f... Read onyx_x402_demo_wallet Dev-sandbox wallet helper for x402 testing. Generates a deterministic ephemeral Sepolia wallet (or accepts ... Read onyx_x402_error_explain Plain-English explainer for any HTTP error in an x402 / MCP flow. Pass the status code + response body (or ... Read onyx_x402_facilitators Directory of known x402 facilitators (Coinbase CDP, x402.org public, xpay.sh, Cronos, Faremeter, others), e... Read onyx_x402_indexer_health Is your x402 endpoint actually discoverable? Probes 6 indexers agents use (CDP discovery, Bazaar mirror, aw... Read onyx_x402_receipt_verify Verify an x402 USDC settlement on Base or Base Sepolia. Given a tx hash, decodes the USDC Transfer log and ... Read onyx_x402_simulate Simulate an x402 v2 payment flow against any paid endpoint. Fetches the 402 challenge (or introspection car... Read onyx_x402_spec_lookup Quick-reference into the x402 v2 protocol spec. Look up an error string, HTTP status, header name, payload ...

WRITE 5 tools

Write onyx_bazaar_submit Indexability audit for any x402 service. Inspects the published surface (/openapi.json, /.well-known/x402.j... Write onyx_browser_click Click the first visible button or link whose text matches the query (case-insensitive substring match). Ret... Write onyx_browser_type Find an input/textarea/select on the current CDP page by its name, id, or visible label, set its value via ... Write onyx_ens_resolve Resolve an ENS name to its current Ethereum mainnet address (or vice versa). Returns the canonical address,... Write onyx_fx_convert Convert between any two fiat currencies (USD, EUR, GBP, JPY, BRL, USDC-equivalent, 160+ ISO-4217 codes) at ...

EXECUTE 7 tools

Execute onyx_agent_workflow Run a multi-step workflow across Onyx tools in one paid call. Each step names a tool and its args; later st... Execute onyx_bazaar_blue_ocean Find empty niches in the x402 paid-MCP market. Reads CDP discovery (1000+ live services), clusters by keywo... Execute onyx_browser_navigate Navigate a Chrome DevTools Protocol session to a target URL and wait for load. Returns the final URL after ... Execute onyx_html_meta Fetch a URL and extract OpenGraph + Twitter Card + standard meta tags: og:title, og:description, og:image, ... Execute onyx_password_strength Score password strength on a 0-100 scale. Returns Shannon entropy (bits), character-class diversity, length... Execute onyx_url_parse Parse any URL into structured components: scheme, host, port, path, query params (as both raw and decoded l... Execute onyx_user_agent_parse Parse any HTTP User-Agent string into a structured record: browser name/version, OS name/version, device ty...

// FAQ

How many tools does the Onyx Mcp MCP server have? +

The Onyx Mcp MCP server exposes 67 tools across 3 categories: Read, Write, Execute.

How do I enforce policies on Onyx Mcp tools? +

Route the Onyx Mcp server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do Onyx Mcp tools fall into? +

Onyx Mcp tools are categorised as Read (55), Write (5), Execute (7). Each category has a recommended default policy.

Let agents act without letting them run wild.

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