How do I install the Pinion Broadcast skill?

Run npx skillmds@latest add chu2bard/pinion-broadcast in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Pinion Broadcast safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Pinion Broadcast?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Pinion Broadcast free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Pinion Broadcast?

chu2bard (@chu2bard) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Pinion Broadcast by chu2bard — Agent Skill

Name: Pinion Broadcast
Rating: 4.2 (5 reviews)
Author: chu2bard

File contents

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 /send to transfer ETH or USDC -- pass the returned tx object here with the sender's private key to execute it.
After calling /trade to swap tokens -- broadcast the approve tx first (if present), wait for confirmation, then broadcast the swap tx.
Any time you have an unsigned Base transaction and need to sign + broadcast it.

Typical Flow

Call /send or /trade to get an unsigned transaction.
Ask the user for their private key.
Call /broadcast with 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.

---name: pinion-broadcastdescription: Sign and broadcast an unsigned transaction on Base. Requires the sender's private key. Costs $0.01 USDC via x402.---# Sign & BroadcastSigns 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```json{ "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```bashcurl -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```json{ "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 `/send` to transfer ETH or USDC -- pass the returned `tx` object here with the sender's private key to execute it.- After calling `/trade` to swap tokens -- broadcast the `approve` tx first (if present), wait for confirmation, then broadcast the `swap` tx.- Any time you have an unsigned Base transaction and need to sign + broadcast it.## Typical Flow1. Call `/send` or `/trade` to get an unsigned transaction.2. Ask the user for their private key.3. Call `/broadcast` with the unsigned tx and the private key.4. 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.

Frequently asked questions

Pinion Broadcast