此 MCP 可以做什么
Extracts product details and prices from URLs, compares products, and creates or verifies signed evidence about web pages and x402 services.
功能
工具
11
工具
attest_page
Get signed proof of what a page said
Prove what a web page said, at a time, in a way someone who distrusts you can check.
Renders the page and returns a signed, timestamped record of it: the text and its SHA-256, the HTTP status, the response headers, the serving IP, and the TLS certificate the site presented. Optionally a screenshot and its hash. All of it hashed into one claim and signed, so any single altered byte breaks the signature.
Use it when a page might change or be denied later: terms of service before you agree, a price before you act on it, a policy you are relying on, a claim a competitor published, a listing that can be edited.
Verification is free, needs no account, and does not depend on this service continuing to exist — the math is public and `verify_attestation` explains how to redo it yourself. We keep no copy, so the response you receive IS the evidence. Store it.
$0.25 USDC per call over x402. A render that fails costs nothing.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': "Absolute https:// URL of the page to attest to. Anything a dispute could turn on: terms of service, a price, a published policy, a competitor's claim, a listing that may be edited later."}, 'payment': {'type': 'string', 'description': 'Base64 x402 payment payload. Omit it to receive a quote instead of an attestation; sign that and call again.'}, 'screenshot': {'type': 'boolean', 'description': 'Default false in MCP. A screenshot makes the evidence much stronger, but the image comes back inline as roughly 55,000 characters of base64. With it false the attestation is text-only and internally complete: it claims no screenshot and commits to no hash you cannot check. Set true when the visual appearance is the thing in dispute and you can afford the bytes.'}}, 'additionalProperties': False}
check_my_balance
Check my wallet balance
Free. Check how much USDC is left in your own wallet on Base, so you can tell your human before you run out. Returns the balance and a link your human can use to refill you from their own wallet. Tollkit never holds anyone's funds or keys.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['address'], 'properties': {'address': {'type': 'string', 'description': 'Your wallet address (0x...). The address you pay from.'}, 'network': {'enum': ['base', 'sepolia'], 'type': 'string', 'description': 'Default base. Use sepolia for test money.'}, 'low_below': {'type': 'number', 'description': 'USDC amount you consider low. Default 1.', 'exclusiveMinimum': 0}}, 'additionalProperties': False}
check_service
Weigh Station: check an x402 service before paying
Free. Probes any x402 endpoint WITHOUT paying and reports what it actually charges, to which wallet, on which network, and how that compares with its public Coinbase Bazaar listing (price, recipient, distinct payers in the last 30 days). Returns facts and named signals such as pay_to_differs_from_listing; it does not score or recommend. Works for services that have nothing to do with Tollkit.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'The x402 endpoint, e.g. https://api.example.com/v1/thing'}, 'method': {'enum': ['GET', 'POST'], 'type': 'string', 'description': 'Force a method. By default the listed method is tried first.'}}, 'additionalProperties': False}
compare_products
Get details for several products at once
Price the same product at several stores — up to 5 URLs in ONE call and ONE payment.
USE THIS WHENEVER YOU HAVE MORE THAN ONE URL. Comparing an item across stores, checking a short list, or refreshing a handful of tracked prices. It returns full details for each URL so YOU can compare them; it does not rank them or pick a winner. Through get_product_details that is one EIP-3009 signature, one settlement and one round trip PER URL; this is one of each for the whole set.
RETURNS one entry per URL in the order given, each with the same product and page objects get_product_details returns, plus ok/error so a single dead URL does not cost you the rest.
COST $0.15 flat for up to 5 URLs — cheaper per page than calling get_product_details 5 times.
BILLING, stated plainly: the price is flat, so a batch where only SOME URLs succeed is charged in full. A batch where NO url succeeds returns an error and is not charged. If you have one URL and are unsure it is live, get_product_details is the cheaper bet.
Duplicate URLs are removed and not billed twice.
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['urls'], 'properties': {'urls': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Up to 5 absolute https:// product page URLs. Duplicates are removed and not billed twice.'}, 'payment': {'type': 'string', 'description': 'Base64-encoded x402 payment payload. Omit on the first call to receive payment requirements.'}, 'allow_redirect': {'type': 'boolean', 'description': 'Applies to every URL. See get_product_details for what it does.'}}, 'additionalProperties': False}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['status', 'requested', 'succeeded', 'failed', 'billing', 'results', 'settlement'], 'properties': {'failed': {'type': 'number'}, 'status': {'type': 'string', 'const': 'ok'}, 'billing': {'type': 'string', 'description': 'The billing rule, restated on every response rather than only in the docs.'}, 'results': {'type': 'array', 'items': {'type': 'object', 'required': ['url', 'ok', 'product', 'page', 'provenance', 'cached', 'cache_age_seconds', 'error', 'message'], 'properties': {'ok': {'type': 'boolean'}, 'url': {'type': 'string'}, 'page': {'anyOf': [{'type': 'object', 'required': ['url', 'finalUrl', 'title', 'status', 'fetchedAt', 'render_ms'], 'properties': {'url': {'type': 'string', 'description': 'The URL as submitted.'}, 'title': {'type': ['string', 'null']}, 'status': {'type': 'number', 'description': 'HTTP status of the rendered page.'}, 'finalUrl': {'type': 'string', 'description': 'Where it ended up after redirects.'}, 'fetchedAt': {'type': 'string', 'description': 'ISO timestamp of the RENDER, not of this call. On a cached result this is older than now — check it before treating a price as live.'}, 'render_ms': {'type': ['number', 'null']}}, 'additionalProperties': False}, {'type': 'null'}]}, 'error': {'type': ['string', 'null']}, 'cached': {'type': 'boolean'}, 'message': {'type': ['string', 'null']}, 'product': {'anyOf': [{'type': 'object', 'required': ['name', 'description', 'brand', 'sku', 'price', 'currency', 'availability', 'images', 'variants', 'url'], 'properties': {'sku': {'type': ['string', 'null'], 'description': 'SKU or model number, if the page shows one.'}, 'url': {'type': 'string', 'description': 'The page the data came from, after any redirects.'}, 'name': {'type': ['string', 'null'], 'description': 'Product title as shown on the page.'}, 'brand': {'type': ['string', 'null']}, 'price': {'type': ['number', 'null'], 'description': 'Numeric price. No currency symbol, no thousands separator.'}, 'images': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Up to 5 absolute image URLs copied verbatim from the page. Never invented. Empty when the page carries no usable product image.'}, 'currency': {'type': ['string', 'null'], 'description': 'ISO 4217 code, e.g. USD. Always null when price is null.'}, 'variants': {'type': 'array', 'items': {'type': 'object', 'required': ['name', 'values'], 'properties': {'name': {'type': 'string'}, 'values': {'type': 'array', 'items': {'type': 'string'}}}, 'additionalProperties': False}, 'description': 'e.g. [{ name: "Size", values: ["S", "M", "L"] }]'}, 'description': {'type': ['string', 'null'], 'description': 'One to three sentences.'}, 'availability': {'enum': ['in_stock', 'out_of_stock', 'preorder', 'unknown'], 'type': 'string', 'description': '`unknown` when the page does not say — never guessed.'}}, 'additionalProperties': False}, {'type': 'null'}]}, 'provenance': {'anyOf': [{'type': 'object', 'required': ['source', 'declared', 'inferred'], 'properties': {'source': {'enum': ['json-ld', 'meta', 'json-ld+meta', 'none'], 'type': 'string'}, 'declared': {'type': 'array', 'items': {'type': 'string'}}, 'inferred': {'type': 'array', 'items': {'type': 'string'}}}, 'additionalProperties': False}, {'type': 'null'}], 'description': 'Per-URL: which fields the merchant declared vs the model inferred.'}, 'cache_age_seconds': {'type': 'number'}}, 'additionalProperties': False}}, 'requested': {'type': 'number'}, 'succeeded': {'type': 'number'}, 'settlement': {'type': ['string', 'null']}}, 'additionalProperties': False}
find_service
Weigh Station: find a paid x402 tool
Free. Searches Coinbase's public x402 discovery index for services that do a task (e.g. 'product price lookup', 'send sms', 'web page screenshot'), then checks each result live without paying. Results are ordered by whether they returned a live price quote, then by distinct paying wallets; nobody pays for placement. Descriptions are the sellers' own words.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['query'], 'properties': {'limit': {'type': 'integer', 'maximum': 8, 'minimum': 1, 'description': 'How many results to check, default 5.'}, 'query': {'type': 'string', 'maxLength': 200, 'minLength': 2, 'description': 'What you need done, in plain words.'}}, 'additionalProperties': False}
get_product_details
Get product details from a URL
Find out what a product is and what it costs, from its page URL.
USE THIS WHEN you have the URL of ONE specific product — a store listing, a marketplace item, a manufacturer's page — and you need its fields rather than its prose. Typical jobs: comparing the same item across several stores, tracking a price over time, checking whether something is in stock, ingesting a catalogue, or getting a product photo URL.
DO NOT USE THIS FOR search-results or category pages (it returns one product, not a list), pages behind a login or paywall, or pages that are not about a product. It also cannot reach private or internal addresses.
RETURNS name, description, brand, sku, price (a number), currency (ISO 4217), availability (in_stock | out_of_stock | preorder | unknown), images (up to 5 absolute URLs copied from the page, never invented) and variants. See the output schema for the exact shape. Any field the page does not state comes back null rather than guessed.
HOW: the page is rendered in a real headless browser before extraction, so JavaScript-built pages work where a plain fetch returns an empty shell.
COST $0.05 USDC per call over x402 on Base. No account, no API key, nothing to install, and no gas — the facilitator sponsors it. Call once WITHOUT the payment argument to get back the payment requirements, sign an EIP-3009 transferWithAuthorization with your own wallet for the quoted amount, base64-encode the x402 payload, and call again with that string as `payment`.
EVERY RESPONSE SAYS WHERE EACH FIELD CAME FROM. `provenance.declared` lists the fields whose values match what the merchant published in schema.org JSON-LD — their own number, the one they publish for Google. `provenance.inferred` lists the ones a model read off the page, which might be a strikethrough price or a neighbouring product. Act on declared values; verify inferred ones if the decision matters.
A URL that redirects to what looks like a DIFFERENT page — a discontinued item bouncing to its category listing — is refused free of charge rather than answered with the wrong product. Retry with `allow_redirect: true` if you want whatever the URL resolves to.
A failed extraction is not charged. Repeat calls for the same URL within 300 seconds are re-served from a recent render and marked `cached: true` with the render's original `fetchedAt`.
Call `try_it_free` first if you want to see real output before spending anything.
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'Absolute https:// URL of a single product page. Not a search or category page.'}, 'payment': {'type': 'string', 'description': 'Base64-encoded x402 payment payload. Omit on the first call to receive payment requirements.'}, 'allow_redirect': {'type': 'boolean', 'description': 'Default false. By default a URL that redirects to what looks like a different page (a discontinued item bouncing to its category listing) is refused free of charge, because extracting it would return a real product that is not the one you asked for. Set true if you want whatever the URL resolves to.'}}, 'additionalProperties': False}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['status', 'product', 'page', 'cached', 'cache_age_seconds', 'provenance', 'redirect', 'settlement'], 'properties': {'page': {'type': 'object', 'required': ['url', 'finalUrl', 'title', 'status', 'fetchedAt', 'render_ms'], 'properties': {'url': {'type': 'string', 'description': 'The URL as submitted.'}, 'title': {'type': ['string', 'null']}, 'status': {'type': 'number', 'description': 'HTTP status of the rendered page.'}, 'finalUrl': {'type': 'string', 'description': 'Where it ended up after redirects.'}, 'fetchedAt': {'type': 'string', 'description': 'ISO timestamp of the RENDER, not of this call. On a cached result this is older than now — check it before treating a price as live.'}, 'render_ms': {'type': ['number', 'null']}}, 'additionalProperties': False}, 'cached': {'type': 'boolean', 'description': 'True when this answer was re-served from a recent render rather than produced now. Re-serving is still a paid call; it is faster, and the data is as old as cache_age_seconds says.'}, 'status': {'type': 'string', 'const': 'ok'}, 'product': {'type': 'object', 'required': ['name', 'description', 'brand', 'sku', 'price', 'currency', 'availability', 'images', 'variants', 'url'], 'properties': {'sku': {'type': ['string', 'null'], 'description': 'SKU or model number, if the page shows one.'}, 'url': {'type': 'string', 'description': 'The page the data came from, after any redirects.'}, 'name': {'type': ['string', 'null'], 'description': 'Product title as shown on the page.'}, 'brand': {'type': ['string', 'null']}, 'price': {'type': ['number', 'null'], 'description': 'Numeric price. No currency symbol, no thousands separator.'}, 'images': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Up to 5 absolute image URLs copied verbatim from the page. Never invented. Empty when the page carries no usable product image.'}, 'currency': {'type': ['string', 'null'], 'description': 'ISO 4217 code, e.g. USD. Always null when price is null.'}, 'variants': {'type': 'array', 'items': {'type': 'object', 'required': ['name', 'values'], 'properties': {'name': {'type': 'string'}, 'values': {'type': 'array', 'items': {'type': 'string'}}}, 'additionalProperties': False}, 'description': 'e.g. [{ name: "Size", values: ["S", "M", "L"] }]'}, 'description': {'type': ['string', 'null'], 'description': 'One to three sentences.'}, 'availability': {'enum': ['in_stock', 'out_of_stock', 'preorder', 'unknown'], 'type': 'string', 'description': '`unknown` when the page does not say — never guessed.'}}, 'additionalProperties': False}, 'redirect': {'anyOf': [{'type': 'object', 'required': ['requested', 'final'], 'properties': {'final': {'type': 'string'}, 'requested': {'type': 'string'}}, 'additionalProperties': False}, {'type': 'null'}], 'description': 'Present only when the browser landed somewhere other than the URL you gave. The data describes `final`, not `requested`.'}, 'provenance': {'type': 'object', 'required': ['source', 'declared', 'inferred'], 'properties': {'source': {'enum': ['json-ld', 'meta', 'json-ld+meta', 'none'], 'type': 'string'}, 'declared': {'type': 'array', 'items': {'type': 'string'}}, 'inferred': {'type': 'array', 'items': {'type': 'string'}}}, 'description': 'Where each field came from. `declared` matches what the merchant published in schema.org data — their own number. `inferred` was read off the page by a model. Null fields appear in neither. Treat a declared price as a fact and an inferred one as a reading.', 'additionalProperties': False}, 'settlement': {'type': ['string', 'null'], 'description': 'Base64 x402 settlement receipt, when the facilitator returned one.'}, 'cache_age_seconds': {'type': 'number'}}, 'additionalProperties': False}
get_service_info
Service info
Free. Price, network, and what this service returns. For a sample of the actual output rather than a description of it, call try_it_free instead.
只读
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
read_page
Read a web page as clean text
Read any public web page and get its visible text back: the words a person would see, with navigation and boilerplate stripped, plus the title and final URL after redirects. JavaScript pages are rendered in a real browser first. Up to 50,000 characters.
Use it to read an article, a doc, a policy or any page you were given a link to. Chain it with a summarizer when the page is long.
$0.005 USDC per page over x402. A page that fails to load, returns an error or has no text costs nothing. Call without `payment` to get a quote.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'Absolute http(s) URL of a public page.'}, 'payment': {'type': 'string', 'description': 'Base64 x402 payment payload. Omit it to receive a quote; sign that and call again.'}}, 'additionalProperties': False}
screenshot_page
Screenshot a web page
Capture how any public web page looks: a 1280x800 JPEG from a real browser, returned as base64 with its SHA-256, the title and the final URL.
Use it to see a page's layout, check that something renders, or hand the image to a vision model. The image is roughly 50-150 KB of base64 in the response.
$0.01 USDC per capture over x402. A page that fails to load or returns an error costs nothing. For signed, timestamped evidence of a page use attest_page instead. Call without `payment` to get a quote.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'Absolute http(s) URL of a public page.'}, 'payment': {'type': 'string', 'description': 'Base64 x402 payment payload. Omit it to receive a quote; sign that and call again.'}}, 'additionalProperties': False}
try_it_free
Free sample — see real output before paying
Free. Run a real extraction against one fixed sample product page and return the result.
USE THIS to decide whether the paid tools are worth paying for. It returns the identical shape get_product_details returns, produced by the identical code — not a hand-written example — so what you see is what you get. It takes no arguments and costs nothing.
You cannot choose the page: pointing a free endpoint at arbitrary URLs would just be the paid tool with no toll. Use get_product_details for the URL you actually care about.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['status', 'preview', 'free', 'sample_url', 'product', 'page', 'stale', 'cache_age_seconds', 'note'], 'properties': {'free': {'type': 'boolean', 'const': True}, 'note': {'type': 'string'}, 'page': {'type': 'object', 'required': ['url', 'finalUrl', 'title', 'status', 'fetchedAt', 'render_ms'], 'properties': {'url': {'type': 'string', 'description': 'The URL as submitted.'}, 'title': {'type': ['string', 'null']}, 'status': {'type': 'number', 'description': 'HTTP status of the rendered page.'}, 'finalUrl': {'type': 'string', 'description': 'Where it ended up after redirects.'}, 'fetchedAt': {'type': 'string', 'description': 'ISO timestamp of the RENDER, not of this call. On a cached result this is older than now — check it before treating a price as live.'}, 'render_ms': {'type': ['number', 'null']}}, 'additionalProperties': False}, 'stale': {'type': 'boolean', 'description': 'True if the sample could not be refreshed and is an older render.'}, 'status': {'type': 'string', 'const': 'ok'}, 'preview': {'type': 'boolean', 'const': True}, 'product': {'type': 'object', 'required': ['name', 'description', 'brand', 'sku', 'price', 'currency', 'availability', 'images', 'variants', 'url'], 'properties': {'sku': {'type': ['string', 'null'], 'description': 'SKU or model number, if the page shows one.'}, 'url': {'type': 'string', 'description': 'The page the data came from, after any redirects.'}, 'name': {'type': ['string', 'null'], 'description': 'Product title as shown on the page.'}, 'brand': {'type': ['string', 'null']}, 'price': {'type': ['number', 'null'], 'description': 'Numeric price. No currency symbol, no thousands separator.'}, 'images': {'type': 'array', 'items': {'type': 'string'}, 'description': 'Up to 5 absolute image URLs copied verbatim from the page. Never invented. Empty when the page carries no usable product image.'}, 'currency': {'type': ['string', 'null'], 'description': 'ISO 4217 code, e.g. USD. Always null when price is null.'}, 'variants': {'type': 'array', 'items': {'type': 'object', 'required': ['name', 'values'], 'properties': {'name': {'type': 'string'}, 'values': {'type': 'array', 'items': {'type': 'string'}}}, 'additionalProperties': False}, 'description': 'e.g. [{ name: "Size", values: ["S", "M", "L"] }]'}, 'description': {'type': ['string', 'null'], 'description': 'One to three sentences.'}, 'availability': {'enum': ['in_stock', 'out_of_stock', 'preorder', 'unknown'], 'type': 'string', 'description': '`unknown` when the page does not say — never guessed.'}}, 'additionalProperties': False}, 'sample_url': {'type': 'string'}, 'cache_age_seconds': {'type': 'number'}}, 'additionalProperties': False}
verify_attestation
Check an attestation is genuine
Free, forever, no account. Hand back an attestation -- yours or one someone else gave you -- and find out whether the signature holds and whether we issued it. Works on attestations this service did not produce: the answer for those is a clear no, which is the point. Holds no database, so it keeps working whoever is running it.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['attestation'], 'properties': {'attestation': {'type': 'string', 'description': 'The attestation as JSON text: either the whole response from attest_page or just its `attestation` object.'}}, 'additionalProperties': False}
历史
近期工具变更
已添加
screenshot_page
2026年10月3日 02:50
已添加
read_page
2026年10月3日 02:50
已添加
find_service
2026年9月23日 02:40
已添加
check_service
2026年9月23日 02:40
已添加
check_my_balance
2026年9月23日 02:40
已添加
get_service_info
2026年9月21日 02:40
已添加
verify_attestation
2026年9月21日 02:40
已添加
attest_page
2026年9月21日 02:40
已添加
compare_products
2026年9月21日 02:40
已添加
try_it_free
2026年9月21日 02:40
已添加
get_product_details
2026年9月21日 02:40
发现
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