Authoritative MITRE CWE (Common Weakness Enumeration) lookup. Pass id (e.g. CWE-79, or just 79) for the canonical weakness — name, abstraction, description, extended description, ChildOf/ParentOf relationships (with names), and mapped CAPEC attack patterns (with names) — or query for a keyword search returning ranked matches. Bundled catalog (~970 weaknesses), zero external calls. Agents hallucinate CWE IDs and names constantly; this returns exact, citeable, version-pinned data. Pairs with security.cve (which returns CWE ids) and security.capec.
/api/security/cwePAYMENT-SIGNATURE.The cwe API is a pay-per-call security endpoint built for AI agents and autonomous software. Authoritative MITRE CWE (Common Weakness Enumeration) lookup.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in cwe data source for an agent tool-use loop, an MCP host, or a backend that needs security data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
id | string | min 1 chars · max 20 chars |
query | string | min 2 chars · max 80 chars |
limit | integer | min 1 · max 100 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/security/cwe?id=example&query=xx&limit=1' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/security/cwe?id=example&query=xx&limit=1' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/security/cwe?id=example&query=xx&limit=1'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.security.cwe({
"id": "example",
"query": "xx",
"limit": 1
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.security.cwe(id="example", query="xx", limit=1)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "security.cwe",
"arguments": {
"id": "example",
"query": "xx",
"limit": 1
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}