Pinion Broadcast

Community

chu2bard

pinion-broadcast

Sign and broadcast an unsigned transaction on Base. Requires the sender's private key. Costs $0.01 USDC via x402.

Overview

Publisher	chu2bard
Repository	`pinion-os`
Skill name	`pinion-broadcast`
Stars	97
Forks	6
Bundled files	Instructions only
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by chu2bard on GitHub. Read the source before you install it.

Installation

Install the Pinion Broadcast AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/chu2bard/pinion-os/tree/main/skills/broadcast
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/chu2bard/pinion-os.git /tmp/pinion-os
mkdir -p .claude/skills
cp -r /tmp/pinion-os/skills/broadcast .claude/skills/pinion-broadcast

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Pinion Broadcast in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Pinion Broadcast on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Pinion Broadcast is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

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

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

bash
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

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 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.

Frequently asked questions

What does the Pinion Broadcast AI skill do?

Sign and broadcast an unsigned transaction on Base. Requires the sender's private key. Costs $0.01 USDC via x402.

Why use Pinion Broadcast on TypingMind?

Because you install it once and use it with any model. Pinion Broadcast is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Pinion Broadcast in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/chu2bard/pinion-os/tree/main/skills/broadcast. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Pinion Broadcast?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Pinion Broadcast?

As many as you like. As long as a model supports skills, you can use Pinion Broadcast with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Pinion Broadcast AI skill free?

Yes. It is published on GitHub by chu2bard under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Sign & Broadcast

Endpoint

Request Body

Example Request

Example Response

When to Use

Typical Flow

Security

Frequently asked questions

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