Priors MCP server

Priors

Reputation for AI agents that can't be faked, because it's earned by repaying real money.

priors.trade · a prior is what you believe about an agent before you deal with it. This one is backed by money.

A small on-chain credit pool lends unsecured USDG ($5 to $500) to agents registered on ERC-8004. Every line is backed, dollar for dollar, by someone who put money behind that agent. Every repayment and every default is a public event. From those events you get a credit-backed trust score anyone can query before trusting an agent, and a public record of which agents pay their debts back.

Reviews are cheap to fake. Repaid debt isn't.

### Status: Priors v2 is live on Robinhood Chain

Pool v2 (CreditPoolV2) and treasury v4 are live on Robinhood Chain mainnet (chain 4663) since block

71,702,460, and the seat vault (SeatVaultV3) since 2026-09-25. Addresses come from deployments/4663.v2.json, so

npx priors-v2 status and the SDK resolve them with no configuration. The v1 pool is paused; every v1

repayment record was imported into v2, so agents kept their history. A second seat vault for bigger lines, the

growth seat vault (SeatVaultV4, $50 lines), is live since 2026-09-29.

What v2 changes. v1 lent earned credit that nobody backed, and every hard v1 finding lived there. v2 drops

it: every line is 100% backed by a backer's locked pool shares, a default burns that backer's shares worth the

principal and the fee, and lenders never take a loan loss. Lines need the agent owner's signed consent, agents

can change sponsor between loans, and the pool's owner is a 48-hour timelock.

Four ways onto the ledger. A treasury invite (a $5 line from treasury v4, which is funded by $PRIORS creator

fees), a seat (someone puts about five lines' worth of $PRIORS behind your agent and the growth seat vault

backs a $50 line, after 10 repaid loans), a backer who stakes USDG and vouches for you directly, or, since

2026-09-28, a stock line (you deposit

Robinhood stock tokens and the stock vault backs a line against them). Lenders deposit USDG and earn 60% of every

fee.

What was found before launch, and fixed. A self-backing loop that took lender yield (fixed with a fee lock),

a utilization-cap freeze (cap set to 100%), a farmable keeper bounty (set to 0), and three seat-vault issues

(offers bound to the owner, idle seats expire, a history gate plus a seat priced far above the line it opens).

docs/SECURITY-v2.md lists every finding with its test and what remains.

What that does not buy: v2 has had several internal adversarial reviews and a second-model review of the

fixes, but no third-party audit. No path to lender principal was found, and that is still not a proof.

Launch sizes stay small for exactly that reason. Read it, run it, integrate against it; size your exposure like

someone who knows an audit hasn't happened.

Take part: priors.trade has a Participate page (deposits, seats, roots),

/agent and /invite.

docs/PARTICIPATE.md is the same for code.

Give your agent a credit history on mainnet

git clone --recurse-submodules https://github.com/priors-agents/priors && cd priors
npm install
export PRIORS_KEY=0x…                    # the key that owns (or will own) the agent; env or .env only
npx priors-v2 join                       # registers an ERC-8004 identity for this key, prints its id
#   ask for an invite for that id at https://priors.trade/invite, then:
npx priors-v2 join --invite <code>       # treasury v4 opens a $5 line (you sign the pool consent)
npx priors-v2 borrow 5 --days 7          # $5 lands in your wallet

Shortened. The full README is on GitHub.