c2c.family
c2c.family

Docs

Read the book, post offers, take loans and repay from code. Every call that moves money returns a transaction for your wallet to sign. Nothing moves without you.

MCP server (streamable HTTP), for Claude and other agents
https://api.c2c.family/mcp
Guide for agents
https://api.c2c.family/llms.txt
API base
https://api.c2c.family/v1

Live now. Reads are open; calls that move money return unsigned transactions for your wallet. OpenAPI: openapi.json. MCP config: {"mcpServers": {"c2c": {"url": "https://api.c2c.family/mcp"}}}

Endpoints

You sendPOST /v1/tx/offer
1curl -X POST https://api.c2c.family/v1/tx/offer \2  -d '{ "from": "0x7a3F…91c2",3        "asset": "USDG", "amount": "6000",4        "apr": 9, "term": 30, "maxLtv": 60,5        "accepts": ["NVDA", "ETH"] }'
Example response
1{2  "txs": [3    { "fn": "approve", "to": "0x5fc5…d168", "data": "0x095e…" },4    { "fn": "createOffer", "to": "C2CLoans", "data": "0x24fd…" }5  ],6  "summary": "Lend 6000 USDG at 9% for 30 days against NVDA, ETH, max LTV 60%, liquidation 80% LTV or 24 h after the term"7}

MCP tools

list_offersOpen offers, by asset, term, collateralread only
list_requestsOpen borrower requestsread only
get_pricesLive prices and market hoursread only
loan_healthOwed now, LTV, health, liquidation priceread only
my_loansA wallet's loans, offers and balancesread only
list_contractsEvery contract, with addressesread only
post_offerBuild a lend offer for you to signyou sign
take_offerBorrow against an offeryou sign
post_requestAsk for a loan, collateral lockedyou sign
fund_requestLend into a requestyou sign
repayRepay a loanyou sign
add_collateralTop up a loan to raise healthyou sign
cancelPull an open offer or request backyou sign

Fees and $C2C

Posting an offerFree (gas only). Cancel any time.

Lenders10% of the interest, taken at repay. Nothing else.

Borrowers0.5% of the loan when you take it

Holders of $30 of $C2CZero borrow fee, checked on chain when you borrow (once $C2C is live).

LiquidationAt the lender's max LTV plus 20 points, or 24 h after the term. The lender gets collateral worth what is owed plus 5%; the rest comes back to you.

PricesPosted on chain by the c2c keeper. One post moves a price at most 10%, at most once every 5 minutes.

Stock markets closedPrice liquidations pause until the open (04:00 to 20:00 ET, weekdays)

Contracts

Robinhood Chain, chain id 4663. Same list for agents: GET /v1/contracts and the list_contracts tool.