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Card snapshot
x402.freeq.one
·
2026-08-18 15:40:19 UTC
·
aa2c353224e4edec28025904a89296487ccb3919fd063affa3726c2e9143b68d
This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.
{
"_source": "agentic.market",
"service": {
"id": "x402-freeq-one",
"name": "x402.freeq.one",
"description": "",
"domain": "x402.freeq.one",
"provider": "x402.freeq.one",
"providerUrl": "",
"category": "",
"networks": [
"Base"
],
"enriched": false,
"endpoints": [
{
"url": "https://x402.freeq.one/mcp",
"description": "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.",
"pricing": {
"amount": "0.001",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "id",
"type": "number",
"description": "",
"example": 1,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "jsonrpc",
"type": "string",
"description": "",
"example": "jsonrpc",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "method",
"type": "string",
"description": "",
"example": "method",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call"
],
"quality": {
"l30DaysTotalCalls": "13",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402.freeq.one/tools/changelog_git",
"description": "Git 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 \u2014 POST https://x402.freeq.one/tools/changelog_git.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "base_commit",
"type": "string",
"description": "",
"example": "04bb13b6c5a17b8c07aaac20a9ea4b1cbafa0e0d",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "repository_url",
"type": "string",
"description": "",
"example": "https://github.com/expressjs/express",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "target_commit",
"type": "string",
"description": "",
"example": "v4.21.2",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "9",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/changelog_openapi",
"description": "OpenAPI Changelog Generator: Diff two OpenAPI specs and generate a structured breaking-change changelog (no LLM \u2014 deterministic diff). Provide base_spec_url and new_spec. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/changelog_openapi.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "base_spec_url",
"type": "string",
"description": "",
"example": "https://petstore3.swagger.io/api/v3/openapi.json",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "new_spec",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/cross_chain_balance",
"description": "Cross-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 \u2014 POST https://x402.freeq.one/tools/cross_chain_balance.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chains",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/document_to_markdown",
"description": "Document 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 \u2014 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 \u2014 POST https://x402.freeq.one/tools/document_to_markdown.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 100000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/report.pdf",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "12",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402.freeq.one/tools/docx_to_markdown",
"description": "DOCX 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 \u2014 POST https://x402.freeq.one/tools/docx_to_markdown.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 100000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/contract.docx",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/epub_to_markdown",
"description": "EPUB 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 \u2014 POST https://x402.freeq.one/tools/epub_to_markdown.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 200000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/book.epub",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/giftcard/api/buy",
"description": "Buy a digital gift card and receive the code instantly. Payment settles on Base via x402.",
"pricing": {
"amount": "1",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "email",
"type": "string",
"description": "",
"example": "email",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "product_id",
"type": "string",
"description": "",
"example": "product_id",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "value",
"type": "number",
"description": "",
"example": 1,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/html_to_markdown",
"description": "HTML 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 \u2014 POST https://x402.freeq.one/tools/html_to_markdown.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "html",
"type": "string",
"description": "",
"example": "<h1>Hello</h1><p>This is <b>rich text</b> being converted to <a href=\"https://example.com\">Markdown</a>.</p>",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "options",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/jobs",
"description": "Job 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 \u2014 POST https://x402.freeq.one/tools/jobs.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "keywords",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "searches",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "12",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402.freeq.one/tools/llm_chat",
"description": "LLM Chat: Chat with a language model. OpenAI-compatible /v1/chat/completions interface. Supports 50+ models. Free models (auto, eco, premium) are $0 \u2014 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 \u2014 POST https://x402.freeq.one/tools/llm_chat.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "max_tokens",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "messages",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "model",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "temperature",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "10",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/markdown",
"description": "Markdown Extractor: 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. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/markdown.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "options",
"type": "object",
"description": "",
"example": null,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://en.wikipedia.org/wiki/Base_(blockchain)",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/mermaid",
"description": "Mermaid Diagram Renderer: 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). Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/mermaid.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "code",
"type": "string",
"description": "",
"example": "graph TD\n A[Client] -->|402| B[x402 Gateway]\n B -->|settle| C[USDC on Base]\n B -->|forward| D[Upstream API]",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "format",
"type": "string",
"description": "",
"example": "png",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "scale",
"type": "number",
"description": "",
"example": 2,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "theme",
"type": "string",
"description": "",
"example": "default",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "21",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/og_image_generator",
"description": "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. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/og_image_generator.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "description",
"type": "string",
"description": "",
"example": "Search live job postings with USDC micro-payments on Base",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "image",
"type": "string",
"description": "",
"example": "https://files.catbox.moe/x402-card.png",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "title",
"type": "string",
"description": "",
"example": "Jobs API \u2014 Pay Per Call",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "18",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/pdf_to_markdown",
"description": "PDF 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 \u2014 POST https://x402.freeq.one/tools/pdf_to_markdown.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 100000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/report.pdf",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/pptx_to_markdown",
"description": "PPTX 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 \u2014 pitch decks and slide reports become LLM-readable text. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/pptx_to_markdown.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 100000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/deck.pptx",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/qr_generator",
"description": "QR/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 \u2014 POST https://x402.freeq.one/tools/qr_generator.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "data",
"type": "string",
"description": "",
"example": "https://x402.freeq.one",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "format",
"type": "string",
"description": "",
"example": "qrcode",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "type",
"type": "string",
"description": "",
"example": "svg",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "20",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/shortlink_create",
"description": "Short 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 \u2014 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 \u2014 it is shown only at creation. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/shortlink_create.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "expires_at",
"type": "string",
"description": "",
"example": "2027-01-01T00:00:00Z",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "slug",
"type": "string",
"description": "",
"example": "uuid-tool",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://imapp.blogspot.com/2026/08/uuid-generator-free-uuid-v4-v7-creator.html",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "11",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402.freeq.one/tools/shortlink_stats",
"description": "Short Link Stats: Click stats for a freeq.one short link: total clicks, last-30-day clicks, last click time. FREE for the link owner \u2014 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 \u2014 POST https://x402.freeq.one/tools/shortlink_stats.",
"pricing": {
"amount": "0.001",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "link_secret",
"type": "string",
"description": "",
"example": "a7a7011bcaa56e6cf069d5a21fa6f932",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "slug",
"type": "string",
"description": "",
"example": "uuid-tool",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/token_price",
"description": "Token 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 \u2014 POST https://x402.freeq.one/tools/token_price.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "symbol",
"type": "string",
"description": "",
"example": "ETH",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "24",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/verify_batch",
"description": "Batch 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 \u2014 POST https://x402.freeq.one/tools/verify_batch.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "items",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/verify_semaphore",
"description": "Semaphore ZK Proof Verifier: Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof(). Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/verify_semaphore.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "16",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/verify_stablecoin",
"description": "Stablecoin 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 \u2014 no payment required. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/verify_stablecoin.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "address",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chain",
"type": "string",
"description": "",
"example": "chain",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "preview",
"type": "boolean",
"description": "",
"example": true,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "symbol",
"type": "string",
"description": "",
"example": "symbol",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "tx_hash",
"type": "string",
"description": "",
"example": "tx_hash",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "11",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/verify_worldid",
"description": "World 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 \u2014 POST https://x402.freeq.one/tools/verify_worldid.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "action",
"type": "string",
"description": "",
"example": "action",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "environment",
"type": "string",
"description": "",
"example": "production",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/wallet_checksum",
"description": "Ethereum 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 \u2014 POST https://x402.freeq.one/tools/wallet_checksum.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0x90b0dc893406d6ea63bb077ed59f5e8340f98d84",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "16",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/wallet_portfolio",
"description": "Wallet 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 \u2014 POST https://x402.freeq.one/tools/wallet_portfolio.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chain",
"type": "string",
"description": "",
"example": "eth",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "include_nfts",
"type": "boolean",
"description": "",
"example": false,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "include_tokens",
"type": "boolean",
"description": "",
"example": true,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "include_transfers",
"type": "boolean",
"description": "",
"example": false,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "transfer_limit",
"type": "number",
"description": "",
"example": 20,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/wallet_verify_nostr",
"description": "NIP-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 \u2014 POST https://x402.freeq.one/tools/wallet_verify_nostr.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "token",
"type": "string",
"description": "",
"example": "token",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "url",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/wallet_verify_siwe",
"description": "SIWE 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 \u2014 POST https://x402.freeq.one/tools/wallet_verify_siwe.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "message",
"type": "string",
"description": "",
"example": "message",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "signature",
"type": "string",
"description": "",
"example": "signature",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/wallet_verify_solana",
"description": "Solana Signature Verifier: Verify an ed25519 Solana wallet signature over a message containing a 'Nonce: <value>' line. Returns the signer pubkey. Consumes the nonce \u2014 one verification per nonce. Pay per call in USDC on Base via x402 \u2014 POST https://x402.freeq.one/tools/wallet_verify_solana.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "message",
"type": "string",
"description": "",
"example": "message",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "pubkey",
"type": "string",
"description": "",
"example": "pubkey",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "signature",
"type": "string",
"description": "",
"example": "signature",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "9",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://x402.freeq.one/tools/webhook_catch",
"description": "Ephemeral webhook receiver. Creates a single-use HTTPS URL that catches any POST (Stripe, GitHub, internal) for 1 hour; senders pay nothing. Read captured events for $0.01 per read, extend for $0.05/hour. Response returns hook_url, read_url, extend_url, expires_at.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "ttl_minutes",
"type": "number",
"description": "",
"example": 1,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://x402.freeq.one/tools/whale_alerts",
"description": "Whale 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 \u2014 POST https://x402.freeq.one/tools/whale_alerts.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "direction",
"type": "string",
"description": "",
"example": "both",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "min_value_eth",
"type": "number",
"description": "",
"example": 100,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "17",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://x402.freeq.one/tools/xlsx_to_markdown",
"description": "XLSX/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 \u2014 POST https://x402.freeq.one/tools/xlsx_to_markdown.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "file_b64",
"type": "string",
"description": "",
"example": "file_b64",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "max_length",
"type": "number",
"description": "",
"example": 50000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "url",
"type": "string",
"description": "",
"example": "https://x402.freeq.one/samples/data.xlsx",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"quality": {
"l30DaysTotalCalls": "8",
"l30DaysUniquePayers": "1"
}
}
],
"integrationType": "",
"isNew": false,
"priceSummary": {
"minAmount": "0.001",
"maxAmount": "1",
"avgCostPerTransaction": "0.037562",
"avgCostBasis": "exact",
"currency": "USDC"
},
"serviceName": "x402-gateway",
"tags": [
"mcp",
"pay-per-call",
"x402",
"usdc",
"base"
],
"iconUrl": ""
}
}