Supports using Coinbase CDP as a facilitator for mainnet USDC payment settlement on Solana.

Provides LangChain.js and LangChain Python integrations for paid tool calls in LangChain agents.

Allows OpenAI Custom GPTs to use paid tools via the agenticpay middleware and action schema.

Enables USDC micropayment settlement on Solana with sub-cent fees and ~1.5 second finality.

Offers Vercel AI SDK helpers to add paid tools to generateText/streamText workflows.

$ pnpm --filter @agenticpay/two-agent-demo agent

Agent wallet: 3rHoEumCpH8EGrr6Lq2vBKeyec6h3yPRGj2nGG2FzEfX
Server: http://localhost:4021
Facilitator: http://localhost:4022 ← our own
Model: claude-opus-4-7
Task: Reverse the string 'agentpay rocks' and tell me how many words
 are in 'The quick brown fox jumps over the lazy dog'.

[turn 1] tool_use: reverse_string({"text":"agenticpay rocks"}) → paying $0.001 USDC ...
 ✓ paid + got result in 1596ms: {"result":"skcor yaptnega"}
[turn 1] tool_use: word_count({"text":"The quick..."}) → paying $0.0005 USDC ...
 ✓ paid + got result in 1286ms: {"count":9}

Agent final answer:
 1. Reversed string: skcor yaptnega
 2. Word count: 9 words

=== payments summary ===
 reverse_string $0.0010 USDC 1596ms
 word_count $0.0005 USDC 1286ms
 TOTAL $0.0015 USDC 2 calls

┌──────────────┐ 1) HTTP request ┌─────────────┐
│ Claude / │ ────────────────────────────────────▶ │ mcp-server │
│ GPT agent │ 2) HTTP 402 + payment requirements │ (yours) │
│ │ ◀──────────────────────────────────── │ │
│ │ 3) signed USDC payload │ │
│ │ ────────────────────────────────────▶ │ │
└──────────────┘ └─────┬───────┘
 │ verify+settle
 ▼
 ┌──────────────────────┐
 │ agenticpay facilitator │
 │ (also yours, this │
 │ repo, port 4022) │
 └──────────┬───────────┘
 │ submit
 ▼
 Solana
 (USDC SPL,
 sub-cent fees)

npm install @agenticpay/sdk # Solana + USDC primitives
npm install -g @agenticpay/cli # `agenticpay` command
npm install @agenticpay/mcp-server # paywalled HTTP server
npm install @agenticpay/facilitator # self-hosted x402 facilitator
npm install @agenticpay/eliza-plugin # Eliza plugin (Solana-native agents)
npm install @agenticpay/ai-sdk # Vercel AI SDK paid tools
npm install -g @agenticpay/mcp-bridge # MCP server for Claude Desktop / Cursor

mkdir -p ~/.claude/skills
cp -r .claude/skills/agenticpay ~/.claude/skills/

# 1. Install
pnpm install
pnpm -r build

# 2. Generate a payer wallet, fund it on devnet
node packages/cli/dist/index.js wallet new
node packages/cli/dist/index.js wallet show
# → fund SOL at https://faucet.solana.com (paste pubkey)
# → fund USDC at https://faucet.circle.com (Solana Devnet, same pubkey)

# 3. (option A — fastest) Use our hosted devnet facilitator. Skip step 4.
export FACILITATOR_URL=https://agentpay-facilitator-e9b20a5fee6a.herokuapp.com

# 3. (option B — fully self-hosted) Start your own facilitator (terminal 1)
pnpm --filter @agenticpay/facilitator dev
# Note the printed feePayer address. It needs ~0.05 SOL devnet to cover fees.
# Either airdrop or use the helper:
pnpm --filter @agenticpay/facilitator fund
export FACILITATOR_URL=http://localhost:4022

# 4. Start the paywalled mcp-server (terminal 2)
PAY_TO=<recipient pubkey> pnpm --filter @agenticpay/mcp-server dev

# 5. Run the live LLM agent demo (terminal 3, needs ANTHROPIC_API_KEY in .env)
pnpm --filter @agenticpay/two-agent-demo agent