Give an AI agent pay-per-call (x402, USDC on Base) access to LLM inference and Base on-chain / web-analysis tools — no accounts or API keys, just a funded wallet.
LLM inference: chat (OpenAI-compatible completions across many models) and free list_models for live per-token pricing.
Web/AI-visibility audits: seo_audit (SEO + GEO report), robots_check (AI-crawler policy, sitemaps, llms.txt), headers_check (security headers + score).
Page extraction: web_extract (clean text/markdown/links/metadata) and link_preview (Open Graph unfurl card).
Token safety: token_safety (rug/honeypot simulation, 0–100 score, liquidity depth) and token_report (all-in-one safety + liquidity-pull + whale activity with ok/caution/avoid verdict).
Address & deployer risk: address_safety (EOA vs contract, balances, proxy/mint/ownership flags) and deployer_check (deployer reputation, fresh-throwaway detection).
Market monitoring: new_pairs (fresh Base DEX launches), liquidity_pulls (rug alerts), whale_swaps (large swaps / copy-trade signal).
Payments: HTTP 402 challenges signed with an EIP-3009 USDC authorization; gas sponsored, spend ceiling via MAX_PAYMENT_USDC, Base-only by default.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@@true402.dev/mcp-server check token safety for 0x1f984"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP server for the true402 machine-native marketplace — give your agent pay-per-call access to AI inference and web tools over x402 (HTTP 402 micropayments in USDC on Base).
No accounts, no API keys. The agent's wallet is its identity: each paid tool returns an HTTP 402 challenge, the server signs an EIP-3009 USDC authorization, and the call settles on-chain. Configure a funded wallet to auto-pay, or run without one and the paid tools will surface the exact payment requirements instead of failing.
Tools are auto-discovered from the live catalog at startup, so a new marketplace stall appears without an update to this package. The catalog currently yields:
Group | Tools | Price |
Token safety (Base) |
| $0.005–0.008 |
Base history & flow |
| $0.003–0.005 |
Before you sign |
| $0.008 |
Full dossier |
| $0.10 |
Other chains | token safety, token report and address safety on Ethereum and BSC (plus deployer check on Ethereum); token safety on Solana | $0.005–0.008 |
Web |
| $0.003–0.005 |
SEO & search |
| $0.02–0.15 |
Markets & finance |
| $0.003–0.005 |
LLM |
| — |
Prices are indicative; the live 402 challenge is authoritative, and the server refuses to sign above
its per-call cap. Call list_models or read https://true402.dev/api/openapi.json for the exact set.
Related MCP server: x402-mcp
Requires Node.js ≥ 20. Runs over stdio — point any MCP client at it via npx.
Add to your MCP config (claude_desktop_config.json, or .mcp.json for Claude Code):
{
"mcpServers": {
"true402": {
"command": "npx",
"args": ["-y", "@true402.dev/mcp-server"],
"env": {
"WALLET_PRIVATE_KEY": "0xYOUR_FUNDED_BASE_WALLET_KEY"
}
}
}
}Same idea — command npx, args ["-y", "@true402.dev/mcp-server"], and the WALLET_PRIVATE_KEY env var.
Env var | Default | Description |
|
| true402 API base. Override to point at a self-hosted instance. |
| (none) | A funded Base wallet private key used to sign x402 payments. Needs USDC (gas is sponsored by the facilitator — no ETH required). Without it, paid tools return the 402 requirements instead of paying. |
|
| Hard per-call spend ceiling in USDC. This server auto-discovers every paid stall the marketplace advertises (it walks the live OpenAPI spec, not a fixed list), so a new or repriced stall can appear above the default at any time — a call over the ceiling is refused (not paid, not crashed), and the refusal names the price and the ceiling. Raise it if a discovered tool's description shows a price close to or over your configured value; one stall ( |
| (none) | Payments are signed for Base mainnet ( |
Security: the key is read only from the environment and is never logged, echoed, or returned. Use a dedicated low-balance wallet — fund it with only what you intend to spend.
The tool calls the true402 endpoint with no payment.
The server replies 402 with accepted payment options (USDC on Base).
This MCP server signs an EIP-3009 transferWithAuthorization with your wallet.
It retries with the signed payment in the PAYMENT-SIGNATURE header (x402 v2); the service verifies and responds.
Settlement happens on-chain. Your wallet pays only USDC — the facilitator sponsors gas.
When a newer release of this server exists, the first tool result of the session carries one extra line saying so, with the install command. Nothing is blocked; it is shown once per process.
Marketplace: https://true402.dev
Free Telegram rug-check bot (no wallet): https://t.me/True402bot
Live tool catalog: https://true402.dev/api/v1/services
x402 protocol: https://x402.org
MCP (Claude Code / Desktop, Cursor, Hermes) · Hermes Agent · OpenClaw · ElizaOS · LangChain · CrewAI · Vercel AI SDK · Coinbase AgentKit · Virtuals GAME · CLI — same on-chain checks, one install command each: true402.dev/integrations
The rules below are the service's, not this package's — they bite whatever client you use, and they are the ones that surprise people writing their own payer.
Pay the EXACT amount quoted in the 402. Underpaying is rejected. Overpaying is refused with 402 and never credited — settlement submits the signed value and there is no refund path, so a surplus would simply be swept. Equality is also what binds an authorization to the resource it was quoted for.
One authorization buys exactly one response. A replay is refused, not double-charged.
You are charged on success only. Settlement is submitted only when the endpoint returns 2xx; if it errors or times out, your signed authorization is never submitted, so there is nothing to refund.
Some endpoints serve a few free calls per day per client IP, with no wallet. The per-operation description in the OpenAPI spec says which.
Full rules: true402.dev/terms · what is logged and kept: true402.dev/privacy
MIT
Same check and price as the address-safety tool, under the name buyers search for. Structural safety profile for ANY Base address — an EOA or an arbitrary contract — before an agent sends funds to it, approves it, or calls it. Returns contract-vs-EOA, ETH + USDC balance, tx-count (activity), and for contracts: whether it is a recognised ERC-20, ownership state, a mint() selector, and whether it is an EIP-1967 upgradeable proxy (its logic can be swapped after you trust it). Coarse risk band + flags. On-chain reads only — no API key. POST { address }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: address (required), chain.
Structural safety profile for ANY Base address — an EOA or an arbitrary contract — before an agent sends funds to it, approves it, or calls it. Returns contract-vs-EOA, ETH + USDC balance, tx-count (activity), and for contracts: whether it is a recognised ERC-20, ownership state, a mint() selector, and whether it is an EIP-1967 upgradeable proxy (its logic can be swapped after you trust it). Coarse risk band + flags. On-chain reads only — no API key. POST { address }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: address (required), chain.
Structural safety profile for ANY BNB Smart Chain (BSC) address — an EOA or an arbitrary contract — before an agent sends funds to it, approves it, or calls it. Returns contract-vs-EOA, ETH + USDC balance, tx-count (activity), and for contracts: whether it is a recognised ERC-20, ownership state, a mint() selector, and whether it is an EIP-1967 upgradeable proxy (its logic can be swapped after you trust it). Coarse risk band + flags. On-chain reads only — no API key. POST { address }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: address (required), chain.
Structural safety profile for ANY Ethereum address — an EOA or an arbitrary contract — before an agent sends funds to it, approves it, or calls it. Returns contract-vs-EOA, ETH + USDC balance, tx-count (activity), and for contracts: whether it is a recognised ERC-20, ownership state, a mint() selector, and whether it is an EIP-1967 upgradeable proxy (its logic can be swapped after you trust it). Coarse risk band + flags. On-chain reads only — no API key. POST { address }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: address (required), chain.
A domain's backlink profile: referring domains and pages, the dofollow split that carries authority, authority rank, spam score, broken backlinks, and link composition by TLD, type, attribute and country. POST { target }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.1 USD (fixed).
Inputs: target (required).
Send a chat completion request to an LLM via true402 (PAID x402 service, USDC on Base). Requires a funded wallet (WALLET_PRIVATE_KEY) on the MCP server.
Inputs: model (required), messages (required), max_tokens.
Filter + rank live DeFi lending/staking pool APYs across every protocol/chain (DefiLlama, ~15k pools). POST { chain?, project?, asset?, stablecoinOnly?, minTvlUsd?, includeOutliers?, limit? }; returns pools sorted by APY (percent units, apyBase/apyReward split), TVL, stablecoin + ilRisk flags, and the DefiLlama poolId. Exploit-y outlier pools excluded by default. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: asset, chain, limit, project, +3 more.
Resolves the deployer of a Base token and profiles that wallet's reputation: age (tx-count), balance, and whether it is a FRESH throwaway spun up for the launch (a common rug setup) — the discriminating caution. Reputation context a structural/honeypot check can't see. The creator is resolved from the chain itself (its creation receipt), so no explorer is needed. On Base the contracts-shipped count and deep mode are unavailable for now: both need an explorer's list of the contracts a wallet created, which Base lacks today, so contractsCreated comes back null and the answer's limits[] says so. POST { token }. Unpaid returns 402 — no free trial on this stall, it is paid from the first call. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: token (required), deep, chain.
Resolves the deployer of an Ethereum token and profiles that wallet's reputation: age (tx-count), balance, and whether it is a FRESH throwaway spun up for the launch (a common rug setup) — the discriminating caution. Reputation context a structural/honeypot check can't see. POST { token }. Unpaid returns 402 — no free trial on this stall, it is paid from the first call. Requires an explorer key on the server; returns 503 if not configured (and is not charged). (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: token (required), deep, chain.
Fetch a URL and analyse its HTTP security headers (HSTS, CSP, X-Frame-Options, …) into present/missing + a 0–100 score. POST { url }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: url (required).
Same check and price as the token-safety tool, under the name buyers search for. Rug/honeypot safety check for an ERC-20 token on Base (from on-chain reads — no API key): ERC-20 conformance, ownership renounce, mint-capability, WETH/USDC liquidity depth across Uniswap V3 + Aerodrome, and a buy/sell honeypot simulation (a gas-free eth_call that round-trips a tiny WETH→token→WETH trade to detect tokens you can buy but not sell). Returns a 0–100 score + risk flags. POST { token }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), chain.
Related and long-tail keyword ideas for a seed term, each with search volume, CPC, competition and search intent. POST { seed }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.05 USD (fixed).
Inputs: seed (required), limit, language, location.
Monthly search volume, CPC and competition for a batch of keywords, with a 12-month trend per term. Send up to 200 keywords in ONE call — they are priced per call, not per keyword. POST { keywords }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.15 USD (fixed).
Inputs: keywords (required), language, location.
Fetch a URL and return its Open Graph card (title, description, image, site name, favicon, canonical). POST { url }; an unpaid request returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: url (required).
Observed liquidity history for a Base token, from our own DEX archive. POST { token, limit? } returns every pool we have indexed for it, every liquidity-removal event with the amount removed, block and transaction hash, and the other tokens drained in the SAME transaction (one actor, several pools). Unlike a live honeypot simulation this answers what ALREADY happened — a pool drained last month simulates fine today if it was re-seeded. Every answer carries coverage, the exact block range our removal index covers, so an absence of removals is never presented as a clean bill of health. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), limit.
Liquidity-pull / rug alerts on Base — Burn (liquidity-removal) events on recently-launched DEX pools (the new-pairs watcher's set). POST { since?, limit?, dex?, minQuote? }; each event gives the pool, token, and WETH/USDC amount removed (the rug magnitude). Cross-check the token with /v1/token-safety. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: dex, limit, since, minQuote.
List every LLM model available through true402's pay-per-call inference, with live per-token pricing (3% over provider cost, min $0.0001/request). Returns each model's id, provider, and input/output token prices across OpenAI, Anthropic, Google, Groq, Mistral and Together — so an agent can pick a model and know the exact cost before paying via x402 (USDC on Base, no account or API key).
Inputs: no named parameters.
Recently-created Base DEX pairs (Uniswap V3 + Aerodrome) from a background log-watcher — fresh token launches for trading agents/snipers. POST { since?, limit?, dex?, withToken? }; each pair gives the new token, quote (WETH/USDC), pool, fee|stable, block + approx age. Bundle with /v1/token-safety for a pre-trade rug/honeypot check. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: dex, limit, since, withToken.
Keyword-search live prediction markets across Polymarket, Limitless, and Manifold; returns normalized markets (probability outcomes, USD volume, close date). POST { query, limit? }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: query (required), limit.
Deterministic finance calculators in one dispatch endpoint. POST { function, params } where function ∈ {black_scholes, implied_volatility, kelly, sharpe, sortino, max_drawdown, historical_var, cvar, cagr, volatility}. e.g. black_scholes params {S,K,T,r,sigma,type}; kelly {p,b}; sharpe {returns[],rf?}. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: params (required), function (required).
Which keywords a domain already ranks for in organic search, with position, search volume, CPC and competition. POST { target }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.05 USD (fixed).
Inputs: target (required), limit, language, location.
Fetch a site's robots.txt + llms.txt and report whether the major AI crawlers are allowed/blocked, plus sitemaps. POST { url }; unpaid returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.003 USD (fixed).
Inputs: url (required).
Render a web page in headless Chromium and return a PNG screenshot as base64 JSON. POST { url, fullPage?, width? }; an unpaid request returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.004 USD (fixed).
Inputs: url (required), width, fullPage.
Audit web pages for SEO + GEO (generative-engine optimization). POST { url, mode? } for a single page, or { urls: [...], mode? } to audit several in one call — priced per page ($0.02/page, up to 10 pages per request on this deployment). An unpaid request returns 402 with payment requirements. After payment, a single url returns a flat report (per-category scores + issues); urls returns { count, succeeded, pages: [...] }. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.02–$0.2 USD/page (DYNAMIC — can exceed a fixed MAX_PAYMENT_USDC ceiling; raise it if a call is refused).
Inputs: url, mode, urls.
Live Google organic results for one query: the top 10–30 results with position, domain, URL, title and snippet, the SERP features present, and — with target — that domain's position (null = not in the results read). POST { keyword, target? }; unpaid returns 402. Paid from the first call (no free trial). (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.02 USD (fixed).
Inputs: keyword (required), depth, device, target, +2 more.
Everything we know about a Base ERC-20, in one call. Contains the full Token Report (ERC-20 conformance, ownership, mint-capability, liquidity depth, buy/sell honeypot simulation, live rug + whale activity, avoid|caution|ok verdict) PLUS two sections the cheaper report cannot carry: the deployer's reputation (wallet age, prior deployments) and the durable liquidity archive for this token (every pool, every removal with amount/block/tx, and the other tokens drained in the SAME transaction — operator linkage). Those two are what distinguish a bad token from a serial rugger. Each section reports its own status and limits[] names what could NOT be established, because a silently missing section reads as reassurance. The verdict is inherited from the Token Report and may only be escalated, never softened. POST { token }. No free trial on this stall. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.1 USD (fixed).
Inputs: token (required), chain.
The flagship composite for a Base ERC-20 — one call instead of five. Runs the full token-safety check (ERC-20 conformance, ownership, mint-capability, WETH/USDC liquidity depth, buy/sell honeypot simulation), enriches it with the live recent liquidity-removal (rug) + whale-swap activity on the token, and returns a single avoid|caution|ok verdict with reasons plus the underlying reports. POST { token }. Cheaper than buying token-safety + liquidity-pulls + whale-swaps separately. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: token (required), chain.
The flagship composite for a BNB Smart Chain (BSC) ERC-20 — one call instead of five. Runs the full token-safety check (ERC-20 conformance, ownership, mint-capability, WBNB/USDC liquidity depth, buy/sell honeypot simulation), and returns a single avoid|caution|ok verdict with reasons plus the underlying reports. POST { token }. Cheaper than buying token-safety + liquidity-pulls + whale-swaps separately. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. Recent liquidity-removal and whale-swap activity is tracked on Base only, so recentPulls and recentWhaleSwaps are always empty on this chain. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: token (required), chain.
The flagship composite for an Ethereum ERC-20 — one call instead of five. Runs the full token-safety check (ERC-20 conformance, ownership, mint-capability, WETH/USDC liquidity depth, buy/sell honeypot simulation), and returns a single avoid|caution|ok verdict with reasons plus the underlying reports. POST { token }. Cheaper than buying token-safety + liquidity-pulls + whale-swaps separately. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. Recent liquidity-removal and whale-swap activity is tracked on Base only, so recentPulls and recentWhaleSwaps are always empty on this chain. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: token (required), chain.
Rug/honeypot safety check for an ERC-20 token on Base (from on-chain reads — no API key): ERC-20 conformance, ownership renounce, mint-capability, WETH/USDC liquidity depth across Uniswap V3 + Aerodrome, and a buy/sell honeypot simulation (a gas-free eth_call that round-trips a tiny WETH→token→WETH trade to detect tokens you can buy but not sell). Returns a 0–100 score + risk flags. POST { token }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), chain.
Rug/honeypot safety check for an ERC-20 token on BNB Smart Chain (BSC) (from on-chain reads — no API key): ERC-20 conformance, ownership renounce, mint-capability, WBNB/USDC liquidity depth across pancakeswap-v3 + pancakeswap-v2, and a buy/sell honeypot simulation (a gas-free eth_call that round-trips a tiny WETH→token→WETH trade to detect tokens you can buy but not sell). Returns a 0–100 score + risk flags. POST { token }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), chain.
Rug/honeypot safety check for an ERC-20 token on Ethereum (from on-chain reads — no API key): ERC-20 conformance, ownership renounce, mint-capability, WETH/USDC liquidity depth across uniswap-v3 + uniswap-v2, and a buy/sell honeypot simulation (a gas-free eth_call that round-trips a tiny WETH→token→WETH trade to detect tokens you can buy but not sell). Returns a 0–100 score + risk flags. POST { token }. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), chain.
Rug/trap safety check for a Solana SPL or Token-2022 token: mint authority (supply inflation), freeze authority (the Solana honeypot — the issuer can freeze your token account so you cannot sell), Token-2022 extensions (permanentDelegate = tokens can be moved out of your wallet, transferHook = issuer code can reject your transfer, transferFee) and pool liquidity depth. Returns a 0–100 score + risk flags. POST { token } with a base58 mint. NOT a buy/sell simulation: Solana has no EVM bytecode, so the eth_call round-trip the Base/Ethereum/BSC stalls run does not exist here. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: token (required), chain.
Check a Base transaction BEFORE signing it. POST an UNSIGNED transaction { from, to, data?, value? } and get three independent lenses: simulation against current state (does it revert?), decoded intent (is this an unlimited approval that outlives the trade?), and the counterparty liquidity-removal history from our own archive. Takes NO private key and NO signature, so the service cannot broadcast or front-run the transaction it inspects — a deliberate security property. It never returns "safe": a clean result means these checks found nothing, and the limits array says so in every response. Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.008 USD (fixed).
Inputs: to (required), from (required), data, value.
Fetch a web page and return clean readable text + light markdown + title/description/links. POST { url }; an unpaid request returns 402. Flat-priced per request. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: url (required).
Recent large ($-value) DEX Swap events (Uniswap V3 + Aerodrome) on the Base pools the new-pairs watcher tracks — a whale-following / copy-trading signal. POST { min?, dex?, since?, limit?, direction? }; each swap gives the pool, token, quote (WETH/USDC), USD size, direction (buy/sell of the token), block + approx age, txHash. usdValue is the quote side (WETH×ETH-USD or USDC). Unpaid: free while the caller's IP has free-trial calls left that day (a small daily allowance shared across the trial stalls, no wallet); otherwise returns 402. (PAID x402 service — USDC on Base; the MCP server needs a funded wallet to settle.) Price: $0.005 USD (fixed).
Inputs: dex, min, limit, since, +1 more.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
Scored across 36 tools
The set spans several domains, but within crypto safety there are explicit duplicates: honeypot is the same check as token_safety, address_risk is the same as address_safety, and token_report/token_dossier overlap heavily with token_safety plus extras. Agents can distinguish SEO vs finance vs crypto at a high level, but multiple overlapping aliases and composite bundles create real misselection risk.
Most names use snake_case, which is good, but the convention is not fully predictable: some tools are nouns (backlinks, serp, quant), some are verb_noun (robots_check, headers_check, tx_preflight), and aliases break the pattern (honeypot vs token_safety, address_risk vs address_safety). Chain-specific suffixes are uneven—Ethereum and BSC get full families, Solana only has token_safety_solana, and Base is unsuffixed.
At 36 tools, this is well above the recommended 3–15 range for a coherent set and exceeds the 25+ threshold for 'too many.' The surface is an aggregator of many unrelated services, so the count feels heavy and invites confusion rather than a well-scoped toolkit.
Coverage is broad across SEO/web, finance calculators, prediction markets, DeFi yields, crypto safety, and LLM access. There are minor parity gaps—Solana lacks address_safety and token_report equivalents, and some chains lack live pull/whale tracking—but agents can work around these for most workflows.
Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.
Pay-per-use MCP tools for AI agents. USDC on Base via x402. No API keys.
15 paid AI agent primitives via x402 (USDC on Base). Pay-per-call MCP server.
Programmatic web-scraping MCP server powered by x402 micro-transactions on Base.
