MCP server for AI agents: 19 tools (blockchain data, web scraping, ZK proofs, image generation) payable per call in USDC on Base via x402. Send JSON-RPC tools/call requests.
x402.freeq.one| Window | Trust | Uptime | Success | p50 | p95 | Price | Data |
|---|---|---|---|---|---|---|---|
| Last hour | 83 | 100% | — | — | — | $0.05 | Low |
| Last 24h | 85 | 100% | — | — | — | $0.0255 | Low |
| Last 7 days | 90 | 100% | — | — | — | $0.001 | Low |
Trust score is global for the provider. Latency, price and uptime are measured per endpoint (last 24h). Click a column to sort.
| Endpoint | |||
|---|---|---|---|
POST /tools/giftcard/api/buyBuy a gift card code at the listed price. Price is returned in the payment challenge before you sign. | 100% | 161 ms | $0.05 |
GET /tools/giftcard/api/buyx402-giftcard-api | — | — | $1 |
POST /tools/photo_to_3d_hqx402-gateway | — | — | $0.5 |
POST /tools/photo_to_3d_fastx402-gateway | — | — | $0.15 |
POST /tools/image_generate_qualityx402-gateway | — | — | $0.09 |
POST /tools/llm_chatLLM 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. | — | — | $0.05 |
POST /tools/webhook_catchx402-gateway | — | — | $0.05 |
POST /webhook_catchx402-gateway | — | — | $0.05 |
POST /tools/backlinks_overviewx402-gateway | — | — | $0.05 |
POST /tools/domain_competitorsx402-gateway | — | — | $0.05 |
POST /tools/domain_keywordsx402-gateway | — | — | $0.05 |
POST /tools/keyword_ideasx402-gateway | — | — | $0.05 |
POST /tools/raas_project_provisionx402-gateway | — | — | $0.05 |
POST /tools/keyword_volumex402-gateway | — | — | $0.03 |
POST /tools/google_serpx402-gateway | — | — | $0.02 |
POST /tools/image_generatex402-gateway | — | — | $0.02 |
POST /tools/search_intentx402-gateway | — | — | $0.02 |
POST /tools/document_to_markdownDocument to Markdown (auto-detect): Convert any document to Markdown with automatic format detection. One endpoint for pdf, docx, pptx, xlsx, csv, epub, html and plain text — provide a URL or base64 bytes and the type is detected from the file contents. Spreadsheets return both a Markdown table and a JSON array of rows. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/document_to_markdown. | — | — | $0.01 |
GET /tools/document_to_markdownx402-gateway | — | — | $0.01 |
POST /tools/pdf_to_markdownPDF to Markdown: Convert a PDF document to clean, LLM-ready Markdown. Provide a direct URL to the PDF or base64-encoded file bytes. Auto-extracts headings, paragraphs, lists and tables. Ideal for feeding reports, papers and contracts into RAG pipelines. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/pdf_to_markdown. | — | — | $0.01 |
GET /tools/pdf_to_markdownx402-gateway | — | — | $0.01 |
GET /mcpMCP server for AI agents: 19 tools (blockchain data, web scraping, ZK proofs, image generation) payable per call in USDC on Base via x402. Send JSON-RPC tools/call requests. | — | — | $0.005 |
POST /tools/changelog_gitGit 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. | — | — | $0.005 |
GET /tools/changelog_gitx402-gateway tool: changelog_git — Diff git commits and generate a structured breaking-change changelog. Provide repository_url, base_commit, and optional target_commit. | — | — | $0.005 |
GET /tools/changelog_openapix402-gateway tool: changelog_openapi — Diff two OpenAPI specs and generate a structured breaking-change changelog (no LLM — deterministic diff). Provide base_spec_url and new_spec. | — | — | $0.005 |
POST /tools/changelog_openapiOpenAPI Changelog Generator: Diff two OpenAPI specs and generate a structured breaking-change changelog (no LLM — deterministic diff). Provide base_spec_url and new_spec. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/changelog_openapi. | — | — | $0.005 |
GET /tools/docx_to_markdownx402-gateway | — | — | $0.005 |
POST /tools/docx_to_markdownDOCX 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. | — | — | $0.005 |
POST /tools/epub_to_markdownEPUB 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. | — | — | $0.005 |
GET /tools/epub_to_markdownx402-gateway | — | — | $0.005 |
GET /tools/mermaidx402-gateway tool: mermaid — Render a Mermaid diagram to an image (PNG or SVG). Returns a base64-encoded image (MCP content type image). Options: format (png|svg), theme (default|dark|forest|neutral), scale (1-4, PNG only). | — | — | $0.005 |
POST /tools/mermaidx402-gateway tool: mermaid — Render a Mermaid diagram to an image (PNG or SVG). Returns a base64-encoded image (MCP content type image). Options: format (png|svg), theme (default|dark|forest|neutral), scale (1-4, PNG only). | — | — | $0.005 |
GET /tools/pptx_to_markdownx402-gateway | — | — | $0.005 |
POST /tools/pptx_to_markdownPPTX to Markdown: Convert a PPTX (PowerPoint) presentation to Markdown. Provide a direct URL or base64-encoded file bytes. Each slide becomes a heading with its text content — pitch decks and slide reports become LLM-readable text. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/pptx_to_markdown. | — | — | $0.005 |
GET /tools/verify_batchx402-gateway tool: verify_batch — Batch verify up to 10 Semaphore proofs in a single request. Returns per-proof results with total count and average duration. | — | — | $0.005 |
POST /tools/verify_batchx402-gateway tool: verify_batch — Batch verify up to 10 Semaphore proofs in a single request. Returns per-proof results with total count and average duration. | — | — | $0.005 |
GET /tools/verify_stablecoinx402-gateway | — | — | $0.005 |
POST /tools/verify_stablecoinStablecoin 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. | — | — | $0.005 |
POST /tools/verify_worldidx402-gateway tool: verify_worldid — 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 }. | — | — | $0.005 |
GET /tools/verify_worldidx402-gateway tool: verify_worldid — 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 }. | — | — | $0.005 |
POST /tools/xlsx_to_markdownXLSX/CSV to Markdown + JSON: Convert an XLSX spreadsheet or CSV to Markdown table AND a JSON array of row objects in one call. Provide a direct URL or base64-encoded file bytes. All sheets are included; multi-sheet workbooks are flattened in sheet order. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/xlsx_to_markdown. | — | — | $0.005 |
GET /tools/xlsx_to_markdownx402-gateway | — | — | $0.005 |
/tools/changelog_gitPay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, o | — | — | $0.005 |
/tools/changelog_openapiPay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, o | — | — | $0.005 |
GET /tools/cross_chain_balancex402-gateway tool: cross_chain_balance — Aggregate native balance and token/NFT counts for an address across eth, arb, base, polygon, opt. | — | — | $0.002 |
POST /tools/cross_chain_balanceCross-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. | — | — | $0.002 |
POST /tools/html_to_markdownHTML to Markdown Converter: Convert an HTML string to clean, LLM-ready Markdown. Handles headings, links, images, tables, lists and code blocks. Options: heading style (atx|setext), bullet list marker, code block style, emphasis delimiters. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/html_to_markdown. | — | — | $0.002 |
GET /tools/jobsx402-gateway tool: jobs — 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. | — | — | $0.002 |
POST /tools/jobsJob 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. | — | — | $0.002 |
GET /tools/llm_chatLLM 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 for full price table. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/llm_chat. | — | — | $0.002 |
POST /tools/og_image_generatorOG 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. | — | — | $0.002 |
GET /tools/shortlink_createx402-gateway | — | — | $0.002 |
POST /tools/shortlink_createShort Link Creator: Create a permanent short link on freeq.one (e.g. https://freeq.one/MySlug). Optional: custom slug, expires_at (ISO date) for a TTL link that auto-expires — same price. Returns short_url plus a one-time manage_secret that gates FREE stats (GET /tools/shortlink_stats with X-Link-Secret) and FREE deletion of the link. Store the secret — it is shown only at creation. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/shortlink_create. | — | — | $0.002 |
POST /tools/token_pricex402-gateway tool: token_price — Get the live price of a token by symbol (e.g. ETH, USDC, MATIC). | — | — | $0.002 |
GET /tools/token_pricex402-gateway tool: token_price — Get the live price of a token by symbol (e.g. ETH, USDC, MATIC). | — | — | $0.002 |
GET /tools/wallet_portfoliox402-gateway tool: wallet_portfolio — Get a complete wallet portfolio for an Ethereum address: native ETH balance, ERC-20 balances, NFT holdings, recent transfers. | — | — | $0.002 |
POST /tools/wallet_portfolioWallet 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. | — | — | $0.002 |
POST /tools/whale_alertsWhale Alerts Scanner: Scan recent blocks for large ETH transfers involving an address. Filter by direction (in/out/both) and threshold. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/whale_alerts. | — | — | $0.002 |
GET /tools/whale_alertsx402-gateway tool: whale_alerts — Scan recent blocks for large ETH transfers involving an address. Filter by direction (in/out/both) and threshold. | — | — | $0.002 |
/tools/cross_chain_balancePay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, o | — | — | $0.002 |
/tools/wallet_portfolioPay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, o | — | — | $0.002 |
/tools/whale_alertsPay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, o | — | — | $0.002 |
POST /mcpMCP server for AI agents: 28 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. | — | — | $0.001 |
GET /tools/html_to_markdownx402-gateway tool: html_to_markdown — Convert an HTML string to clean, LLM-ready Markdown. Handles headings, links, images, tables, lists and code blocks. Options: heading style (atx|setext), bullet list marker, code block style, emphasis delimiters. | — | — | $0.001 |
GET /tools/markdownx402-gateway tool: markdown — Fetch a URL and convert its main content to clean, LLM-ready Markdown (strips nav/ads/sidebars). Options: output_format (markdown|text|json), css_selector, max_length, include_links, include_images. | — | — | $0.001 |
POST /tools/markdownx402-gateway tool: markdown — Fetch a URL and convert its main content to clean, LLM-ready Markdown (strips nav/ads/sidebars). Options: output_format (markdown|text|json), css_selector, max_length, include_links, include_images. | — | — | $0.001 |
GET /tools/og_image_generatorx402-gateway tool: og_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. | — | — | $0.001 |
POST /tools/qr_generatorx402-gateway tool: qr_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. | — | — | $0.001 |
GET /tools/qr_generatorx402-gateway tool: qr_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. | — | — | $0.001 |
GET /tools/shortlink_statsx402-gateway | — | — | $0.001 |
POST /tools/shortlink_statsShort 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. | — | — | $0.001 |
POST /tools/verify_semaphorex402-gateway tool: verify_semaphore — Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof(). | — | — | $0.001 |
GET /tools/verify_semaphorex402-gateway tool: verify_semaphore — Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof(). | — | — | $0.001 |
POST /tools/wallet_checksumx402-gateway tool: wallet_checksum — Convert an Ethereum address to its EIP-55 checksummed form. SIWE messages require the checksummed address on line 2 before signing. | — | — | $0.001 |
GET /tools/wallet_checksumEthereum 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. | — | — | $0.001 |
GET /tools/wallet_verify_nostrNIP-98 Nostr Auth Verifier: Verify a NIP-98 Nostr HTTP auth event. Returns the signer pubkey. Stateful replay protection: each event id can only be verified once. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_verify_nostr. | — | — | $0.001 |
POST /tools/wallet_verify_nostrx402-gateway tool: wallet_verify_nostr — Verify a NIP-98 Nostr HTTP auth event. Returns the signer pubkey. Stateful replay protection: each event id can only be verified once. | — | — | $0.001 |
GET /tools/wallet_verify_siweSIWE 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. | — | — | $0.001 |
POST /tools/wallet_verify_siwex402-gateway tool: wallet_verify_siwe — 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. | — | — | $0.001 |
POST /tools/wallet_verify_solanax402-gateway tool: wallet_verify_solana — 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. | — | — | $0.001 |
GET /tools/wallet_verify_solanaSolana 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. | — | — | $0.001 |
/mcpPay-per-call MCP gateway: 7 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005. MCP flat rate $0.001. | — | — | $0.001 |
/tools/html_to_markdownx402-gateway tool: html_to_markdown — Convert an HTML string to clean, LLM-ready Markdown. Handles headings, links, images, tables, lists and code blocks. Options: heading style (atx|setext), bullet list marker, code block style, emphasis delimiters. | — | — | $0.001 |
/tools/og_image_generatorx402-gateway tool: og_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. | — | — | $0.001 |
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