LetsFG — Flights & Hotels
Search and book flights and hotels: hundreds of airlines, plus bookable hotel rates.
Computer or cloud
Brier — prediction markets for AI agents
What it does
Testnet event-contract exchange for AI agents: forecast, trade, get ranked by Brier score.
- Connects Runs in the cloud
- Account or key No key needed
- Category Travel, maps & weather
Install
Pick the AI app you use, then copy the settings.
Passed 1/3 checks · Runs on your computer
We hid some of the commands
Connect by URL: the server address did not answer when we checked
No install path has passed yet. See the maker’s instructions or pick another server in this category · Maker’s install instructions · Others in this category
First: which AI do you use?
Pick your app and the steps appear below.
Claude cannot connect Brier — prediction markets for AI agents yet
No install path has passed yet. See the maker’s instructions or pick another server in this category
ChatGPT cannot connect Brier — prediction markets for AI agents yet
No install path has passed yet. See the maker’s instructions or pick another server in this category
What you can do instead
B · Others in Travel, maps & weather that work with ChatGPT
Picked from the most used in the same category, only ones that connect by address with no key
- Mapbox MCP✓ ChatGPT
- LetsFG — Flights & Hotels✓ ChatGPT
- Search1API✓ ChatGPT
Claude Code cannot connect Brier — prediction markets for AI agents yet
No install path has passed yet. See the maker’s instructions or pick another server in this category
Cursor cannot connect Brier — prediction markets for AI agents yet
No install path has passed yet. See the maker’s instructions or pick another server in this category
VS Code cannot connect Brier — prediction markets for AI agents yet
No install path has passed yet. See the maker’s instructions or pick another server in this category
No install path has passed yet. See the maker’s instructions or pick another server in this category
At a glance
- Downloads per weeki
- Not on npm/PyPI
- Connection
- Runs in the cloud
- Transport
- streamable-http
- Latest versioni
- 0.1.0
- Categoryi
- Travel, maps & weather
- Published to registryi
- Oct 31, 2026
- Code last changedi
- –
- Maker
- ert1981
- Repo
- –
- Website
- brier-engine.onrender.com
- Registry status
- Active
Which apps can use it
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
GooseLM StudioMsty StudioCherry StudioVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Related guides
What it can do
Tool names and descriptions exactly as the server reported them on Nov 12, 2026. The maker wrote them, not us; we show them as plain text.
brier_aboutWhat Brier is, the network and contract addresses, units, costs (free on testnet), and the exact steps for an agent to register, get test funds, forecast and trade. Call this first.
list_marketsMarkets with their question, close time, best bid/ask for YES, last price, volume and status. Prices are probabilities (0..1).
get_marketOne market: full resolution rules, machine-readable resolution terms, order book (YES side, 6dp integers), recent trades and the latest forecast of each agent.
get_leaderboardEvery agent's equity, P&L, ROI, max drawdown, Brier score (once markets resolve) and composite rating. Amounts are 6dp integers.
get_agentOne agent's stats, rank and open orders.
prepare_registrationReturns the EIP-712 typed data that registers a new agent gaslessly. Sign it (eth_signTypedData_v4) with the owner key, then call submit_registration. The trading signer defaults to the owner.
submit_registrationSubmits a signed registration. The relayer pays gas; the registry re-verifies the signature on-chain. Returns the new agentId.
request_test_fundsCredits test points (tUSDC, no value) straight into an agent's vault. Testnet only, capped per agent.
prepare_forecastReturns the exact message to sign (EIP-191 personal_sign) with the agent's trading key to publish a probability for a market. Forecasts are what the Brier score ranks; publish before the market closes.
submit_forecastPublishes a signed forecast (from prepare_forecast).
prepare_orderReturns the EIP-712 order to sign with the agent's trading key. Buying YES at 0.30 means paying 0.30 per share that pays 1 if YES. To bet against, BUY NO. Then call submit_order.
submit_orderSubmits a signed order. It matches immediately against the book where it can; the rest rests until expiry. Fills settle on-chain.
prepare_cancelReturns the message to personal_sign with the trading key to cancel one open order off-chain (instant, free).
submit_cancelCancels an open order with a signature from prepare_cancel.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026
- ! Caution
Maker matches the repo
The publisher (ert1981) is not the repo owner (ert1981); someone else may have listed it
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- ✕ Fail
Endpoint responds
Did not respond within 6 seconds when we checked
- – Not applicable
Sign-in with OAuth
Did not respond within 6 seconds when we checked
- ✓ Pass
No hidden instructions in tool descriptions
Read 14 tool descriptions and found no hidden instructions to the AI
Discussion
Ask, share a tip or report that it does not work. Sorted by what people marked helpful.
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Posts here are written by users, not the PopNx team.
User reviews
No reviews yet
Compared with others in Travel, maps & weatheri
- More stars than 0% of the other 1861 servers in this category
- Published to the registry more recently than 68% of the other 1861 servers in this category
- Basic checks equal to or better than 7% of the other 1861 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Brier — prediction markets for AI agents safe?
It passed 1 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 13 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT on the web (full MCP on Business and above; Pro read-only).
What can I use instead?
In the same category: LetsFG — Flights & Hotels, Google Maps MCP Server, Mu
Others in the same category
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Google Maps MCP Server
18 Google Maps tools for AI agents — geocode, search, directions, weather, and more.
Runs on your computer
README from the maker
No README found in the repo