Join early accesslangchain-mcp-adapters turns Pink's seven tools into LangChain tools in three lines. Works with Python and JavaScript agents built with LangChain or LangGraph. Plans: Open source.
What you get
Once connected, LangChain · LangGraph can see its budget, the payees it may pay and the rules that apply, run a dry run, request a payment and file the receipt. The rules you set in Pink decide each request: allowed on the spot, sent to a person on the phone, or blocked. LangChain · LangGraph never holds a card number or a bank login.
langchain-mcp-adapters, create a MultiServerMCPClient with transport streamable_http, Pink's URL and the Authorization header, and call get_tools().create_agent (or your LangGraph graph) and run it with the purchase as the message.
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
client = MultiServerMCPClient({"pink": {"transport": "streamable_http", "url": "https://agentic-sandbox.pinkwallet.com/mcp",
"headers": {"Authorization": "Bearer <agent_key>"}}})
tools = await client.get_tools()
agent = create_agent("anthropic:claude-sonnet-5", tools)
out = await agent.ainvoke({"messages": "Reorder 20 kg of espresso beans from Counter Culture Coffee for $420; check the policy first."})Replace <agent_key> with the key of the agent this agent framework should act as. Each agent has its own key, budget and rules.
“Check my budget with Pink, then order 20 kg of espresso beans from Counter Culture Coffee for $420. After that, order $890 of weekly supplies from Sysco.”
What you will see
The first order is allowed on the spot and the agent receives a single-use test credential. The second stops at the store manager's rule ($500–$2,000): it shows up under Approvals in the console, and the agent waits for a person. Approve it there and the agent picks up the credential.
Why those two rules exist →
Yes, with @langchain/mcp-adapters and the same transport name.
Menu names and settings paths follow each vendor's documentation at the verified date. If a vendor moves a menu, the linked page is the source of truth; the Pink side does not change.
Contact Email: [email protected]
ALTIVOX SPHERE SPÓŁKA ZO.O. is a wholly owned subsidiary of PinkWallet, registered in Poland in the Polish Ministry of Finance's virtual-currency activity register (registration number: RDWW-1797), authorized to provide cryptocurrency exchange and digital asset custody services in the EU under AML/CTF regulations.
PinkWallet (Pink Technologies Inc) is registered as a Money Services Business with the U.S. Department of the Treasury, FinCEN (Registration No. 31000321450011), enabling it to provide users with cross-border fund settlement and international payment services under the U.S. regulatory framework.
PinkWallet (Pink Wallet Technology Inc.) is registered as a Money Services Business with FINTRAC, Canada's financial intelligence unit (Registration No. C100001073), enabling it to provide users with cross-border fund settlement and virtual currency services under the Canadian regulatory framework.
