Discover / x402.freeq.one

x402-gateway

■ Challenge detected

MCP server for AI agents: 31 tools (blockchain data, web scraping, ZK proofs, image generation, gift cards) payable per call in USDC on Base via x402. Send JSON-RPC tools/call requests.

Listed price
$0.001
Challenge detected
6 of the last 10 checks
Median response
155 ms
Last checked
16 Oct, 18:49 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://x402.freeq.one/mcp
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
44 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://x402.freeq.one/tools

  • POST/google_serp$0.02Google SERP: Live Google organic results for any keyword. Returns top 10 titles, URLs, snippets, and rank. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/google_serp.
  • POST/llm_chat$0.05LLM Chat: Chat with a language model. OpenAI-compatible /v1/chat/completions interface. Supports 50+ models. Free models (auto, eco, premium) are $0 — paid models (gpt-5.2, claude-opus-5, deepseek-v4-pro, ...) are charged at cost. See /tools/llm_chat/models for the full model list and rates. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/llm_chat.
  • POST/wallet_portfolio$0.002Wallet Portfolio: Get a complete wallet portfolio for an Ethereum address: native ETH balance, ERC-20 balances, NFT holdings, recent transfers. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_portfolio.
  • POST/photo_to_3d_hq$0.5Photo to 3D Model (high detail): Photo to 3D model (high-detail tier, 1-3 min). Single input image to a high-poly textured GLB with PBR-like shading and a preview thumbnail. Game-ready — drop straight into Three.js, Unity, or Godot. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/photo_to_3d_hq.
  • POST/epub_to_markdown$0.005EPUB to Markdown: Convert an EPUB e-book to clean Markdown. Provide a direct URL or base64-encoded file bytes. Chapters become headings; metadata (title, author) is included. Feed whole books into LLM context or RAG. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/epub_to_markdown.
  • POST/wallet_checksum$0.002Ethereum Address Checksum: Convert an Ethereum address to its EIP-55 checksummed form. SIWE messages require the checksummed address on line 2 before signing. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_checksum.
  • POST/image_generate$0.02Text to Image (fast): Generate an image from a text prompt (fast tier, 2-6s). Returns a permanent https URL to the hosted image on api.freeq.one/media/*. Game assets, avatars, illustrations, concept art. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/image_generate.
  • POST/jobs$0.002Job Search: Search live job postings by keywords and locations. Returns structured results: title, company, location, apply URL, work types, employment type, seniority, industry, salary, and description. Supports onsite/remote/hybrid preferences. One call covers the whole market for a keyword + location pair. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/jobs.
  • POST/qr_generator$0.002QR/Barcode Generator: Generate a QR code or barcode as an image (SVG or PNG). Returns a base64-encoded image (MCP content type image). Symbologies: qrcode/qr, code128, code39, ean13, ean8, upca, upce, isbn10, isbn13, issn, itf, gs1-128, databar. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/qr_generator.
  • POST/backlinks_overview$0.05Backlinks Overview: Backlink overview for any domain — referring domains, backlink count, authority. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/backlinks_overview.
  • POST/token_price$0.002Token Price Lookup: Get the live USD price of any token by symbol (e.g. BTC, ETH, SOL, PEPE). Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/token_price.
  • POST/cross_chain_balance$0.002Cross-Chain Balance Checker: Aggregate native balance and token/NFT counts for an address across eth, arb, base, polygon, opt. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/cross_chain_balance.
  • POST/verify_batch$0.005Batch Semaphore Proof Verifier: Batch verify up to 10 Semaphore proofs in a single request. Returns per-proof results with total count and average duration. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/verify_batch.
  • POST/wallet_verify_siwe$0.002SIWE Signature Verifier: Verify a Sign-In-With-Ethereum (EIP-4361) signature. Stateless oracle: checks the signature against the message and returns the wallet address + chainId. Never mints sessions or consumes nonces. Get a checksummed address first via wallet_checksum. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_verify_siwe.
  • POST/og_image_generator$0.002OG Image Generator: Generate an Open Graph social-card image (1200x630 PNG) from a title and description. Returns a base64-encoded image (MCP content type image). Optional image URL embeds a header graphic. Title truncated to 60 chars, description to 120. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/og_image_generator.
  • POST/shortlink_stats$0.001Short Link Stats: Click stats for a freeq.one short link: total clicks, last-30-day clicks, last click time. FREE for the link owner — pass the manage_secret returned at creation as the link_secret field. The paid call is for agents checking a link they did not create (liveness/traffic check). Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/shortlink_stats.
  • POST/raas_project_provision$0.05RaaS Project Provisioner: Provision a Referral-as-a-Service (RaaS) project — one-time $0.05. Returns project_id and apiKey (hashed server-side; shown once — store now). Then call https://api.freeq.one/v1/raas with x-api-key: mint referral codes, track stats, and credit referrers when referred x402 settlements verify on Base. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/raas_project_provision.
  • POST/wallet_verify_solana$0.002Solana Signature Verifier: Verify an ed25519 Solana wallet signature over a message containing a 'Nonce: <value>' line. Returns the signer pubkey. Consumes the nonce — one verification per nonce. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_verify_solana.
  • POST/changelog_git$0.005Git Changelog Generator: Diff git commits and generate a structured breaking-change changelog. Provide repository_url, base_commit, and optional target_commit. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/changelog_git.
  • POST/verify_stablecoin$0.005Stablecoin Issuer / GENIUS / Reserve Verifier: Verify a stablecoin: issuer identity, GENIUS Act qualification status, and latest reserve attestation. Resolves the token from chain+address, a known symbol (USDC, USDT, PYUSD, USDS, FDUSD, USDe), or a tx hash. Free preview: preview=true validates the input and returns the issuer only — no payment required. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/verify_stablecoin.
  • POST/search_intent$0.02Search Intent: Detect search intent (informational, transactional, commercial) for a keyword. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/search_intent.
  • POST/docx_to_markdown$0.005DOCX to Markdown: Convert a DOCX (Word) document to clean, LLM-ready Markdown. Provide a direct URL or base64-encoded file bytes. Preserves headings, lists, tables and formatting. Works for contracts, resumes, reports and letters. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/docx_to_markdown.
  • POST/verify_worldid$0.005World ID Proof Verifier: Verify a World ID 4.0 proof via the Worldcoin Developer Portal API. Generates an RP signature server-side, then proxies the full IDKit proof to developer.world.org. Returns { valid, nullifier, worldcoin_response }. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/verify_worldid.
  • POST/domain_competitors$0.05Domain Competitors: Find organic competitors for any domain. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/domain_competitors.
  • POST/keyword_ideas$0.05Keyword Ideas: Generate keyword ideas from a seed keyword with volume data. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/keyword_ideas.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 44 listed endpoints. Next endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402.freeq.one

Recent checks

27 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026
All 10 checks
When (UTC)ResultHTTPResponse
16 Oct, 18:49 UTCChallenge detected402265ms
15 Oct, 14:11 UTCChallenge detected402214ms
14 Oct, 08:45 UTCChallenge detected402131ms
13 Oct, 10:39 UTCNo challenge detected200115ms
11 Oct, 10:02 UTCNo challenge detected200133ms
9 Oct, 21:31 UTCNo challenge detected200191ms
8 Oct, 15:35 UTCNo challenge detected200134ms
7 Oct, 09:33 UTCChallenge detected402116ms
6 Oct, 09:33 UTCChallenge detected402179ms
27 Sept, 17:02 UTCChallenge detected402107ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for x402-gateway?

Its listed price is $0.001.

What payment terms does x402-gateway advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402-gateway listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

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