azure55562/pinion-broadcast
skills/broadcast/SKILL.md
Sign and broadcast an unsigned transaction on Base. Requires the sender's private key. Costs $0.01 USDC via x402.
$ install --global
skillsauthnpx skillsauth add azure55562/pinion-os pinion-broadcastInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
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Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
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CrowdStrikeAdvanced threat intelligence
50%
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OSV-ScannerOpen Source Vulnerability database check
50%
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OWASP Dep-Check
50%
Last scanned: Apr 16, 2026, 9:07 AM21.3s1 file scanned
SKILL.md
- name:
- pinion-broadcast
- description:
- Sign and broadcast an unsigned transaction on Base. Requires the sender's private key. Costs $0.01 USDC via x402.
Sign & Broadcast
Signs an unsigned transaction with the provided private key and broadcasts it to Base mainnet. Returns the transaction hash and Basescan link.
Endpoint
POST https://pinionos.com/skill/broadcast
Price: $0.01 USDC per call (x402 on Base)
Request Body
{
"tx": {
"to": "0x7a21...",
"value": "0xb1a2bc2ec50000",
"data": "0x",
"chainId": 8453
},
"privateKey": "0x4b3f..."
}
| Field | Type | Required | Description | |------------|--------|----------|------------------------------------------------------------| | tx | object | yes | Unsigned transaction object (from /send or /trade skills) | | tx.to | string | yes | Recipient or contract address | | tx.value | string | no | ETH value in hex (default: "0x0") | | tx.data | string | no | Calldata in hex (default: "0x") | | tx.chainId | number | yes | Must be 8453 (Base mainnet) | | privateKey | string | yes | Sender's private key (0x + 64 hex chars) |
Example Request
curl -X POST https://pinionos.com/skill/broadcast \
-H "Content-Type: application/json" \
-d '{
"tx": {
"to": "0x7a21...",
"value": "0xb1a2bc2ec50000",
"data": "0x",
"chainId": 8453
},
"privateKey": "0x4b3f..."
}'
The first request returns HTTP 402 with payment requirements. Sign a USDC TransferWithAuthorization (EIP-3009) and retry with the X-PAYMENT header.
Example Response
{
"txHash": "0xabc123...",
"explorerUrl": "https://basescan.org/tx/0xabc123...",
"from": "0x1234...",
"to": "0x7a21...",
"network": "base",
"status": "submitted",
"note": "Transaction submitted to Base. It may take a few seconds to confirm.",
"timestamp": "2026-02-17T12:00:00.000Z"
}
When to Use
- After calling
/sendto transfer ETH or USDC -- pass the returnedtxobject here with the sender's private key to execute it. - After calling
/tradeto swap tokens -- broadcast theapprovetx first (if present), wait for confirmation, then broadcast theswaptx. - Any time you have an unsigned Base transaction and need to sign + broadcast it.
Typical Flow
- Call
/sendor/tradeto get an unsigned transaction. - Ask the user for their private key.
- Call
/broadcastwith the unsigned tx and the private key. - Return the tx hash and Basescan link to the user.
Security
- The private key is sent over HTTPS and used only to sign the transaction. It is not stored or logged.
- Only use this with wallets you control and amounts you're comfortable with.
- The sender's wallet needs ETH on Base for gas fees.
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