Verify before you act: deps-check, x402-preflight, json-repair & url-read for agents.
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PAID $0.003 (x402, USDC on Base). Vet a software package BEFORE installing it. Returns existence, latest-vs-requested, deprecation/yank markers, known CVEs from OSV.dev, typosquat similarity to popular names, SPDX license, and age/download signals with a plain-English risk verdict. Args: ecosystem (npm|pypi|crates), name, version (optional). Without payment returns the x402 challenge; pass x_payment to settle.
Package name, e.g. 'lodash', 'requests', 'serde'.
Package ecosystem: npm | pypi | crates.
Specific version to check for CVEs (optional; defaults to latest).
x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
PAID $0.003 (x402, USDC on Base). Vet a software package BEFORE installing it. Returns existence, latest-vs-requested, deprecation/yank markers, known CVEs from OSV.dev, typosquat similarity to popular names, SPDX license, and age/download signals with a plain-English risk verdict. Args: ecosystem (npm|pypi|crates), name, version (optional). Without payment returns the x402 challenge; pass x_payment to settle.
| Argument | Type | Description |
|---|---|---|
| name* | string | Package name, e.g. 'lodash', 'requests', 'serde'. |
| version | string | Specific version to check for CVEs (optional; defaults to latest). |
| ecosystem* | string | Package ecosystem: npm | pypi | crates. |
| x_payment | string | x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"ecosystem",
"name"
],
"properties": {
"name": {
"type": "string",
"description": "Package name, e.g. 'lodash', 'requests', 'serde'."
},
"version": {
"type": "string",
"description": "Specific version to check for CVEs (optional; defaults to latest)."
},
"ecosystem": {
"enum": [
"npm",
"pypi",
"crates"
],
"type": "string",
"description": "Package ecosystem: npm | pypi | crates."
},
"x_payment": {
"type": "string",
"description": "x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first."
}
},
"additionalProperties": false
}PAID $0.002 (x402, USDC on Base). Coerce near-miss LLM JSON to a JSON-Schema-conformant object: strip code fences/prose, fix trailing commas/quotes/unquoted keys, normalise Python literals, balance brackets, then coerce types, apply defaults, and drop extraneous keys. Returns the repaired object OR precise per-field errors. Args: json (the raw string), schema (a JSON Schema object). Without payment returns the x402 challenge.
| Argument | Type | Description |
|---|---|---|
| json* | string | The raw, possibly-malformed JSON text to repair. |
| schema* | object | A JSON Schema (draft 2020-12) object the result must conform to. |
| x_payment | string | x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"json",
"schema"
],
"properties": {
"json": {
"type": "string",
"description": "The raw, possibly-malformed JSON text to repair."
},
"schema": {
"type": "object",
"description": "A JSON Schema (draft 2020-12) object the result must conform to.",
"additionalProperties": {}
},
"x_payment": {
"type": "string",
"description": "x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first."
}
},
"additionalProperties": false
}PAID $0.004 (x402, USDC on Base). Fetch a PUBLIC url and return clean Markdown + a token estimate for RAG ingestion — readability extraction, boilerplate stripped. Respects robots.txt, public pages only, no login/paywall bypass, nothing stored. Args: url. Without payment returns the x402 challenge; pass x_payment to settle.
| Argument | Type | Description |
|---|---|---|
| url* | string | The public web page URL to fetch and convert to Markdown. |
| x_payment | string | x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "The public web page URL to fetch and convert to Markdown."
},
"x_payment": {
"type": "string",
"description": "x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first."
}
},
"additionalProperties": false
}PAID $0.002 (x402, USDC on Base). Verify another x402 endpoint BEFORE paying it: does an unpaid call return a valid x402 v2 402 challenge? do the quoted amount/asset/network/payTo match the site's /.well-known/x402? is TLS valid, host reachable, openapi present? Returns pass/fail + per-check reasons + the parsed price you would pay. Args: url. Without payment returns the x402 challenge; pass x_payment to settle.
| Argument | Type | Description |
|---|---|---|
| url* | string | The x402 endpoint URL to verify, e.g. https://example.com/v1/thing. |
| x_payment | string | x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "The x402 endpoint URL to verify, e.g. https://example.com/v1/thing."
},
"x_payment": {
"type": "string",
"description": "x402 payment payload (base64) for this PAID check. If supplied it is forwarded as the X-PAYMENT header to settle the call and return the real result instead of a 402 challenge. Omit to get the price challenge first."
}
},
"additionalProperties": false
}