ARBITER
Deterministic semantic arbitration for AI agents. Measure and rank a fixed candidate field against a query, intent or perspective, returning a score for every candidate. Also serves deterministic embeddings.
1 of 2 routes settlement-verified · $0.001 USDC/request · 2 endpoints · Intelligence · base network · x402 protocol
Verified routes
POST /v1/compare· $0.001 · Verified with a $0.01 test payment on 16 Sep 2026 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- Actual General Intelligence, Inc.
- Hosted at
api.grip.fyi- Category
- Intelligence
- Price
- $0.001 USDC per request
- Endpoints
- 2
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-09-16
- Listed on PayAPI Market
- 2026-09-16
Try ARBITER
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i -X POST "https://api.grip.fyi/v1/compare"About this API
ARBITER is listed in the Intelligence category with pricing at $0.001 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-09-16. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 2 endpoints. Only the verified route has been tested by PayAPI Market. Other routes are unverified.
Questions about this API
What does ARBITER do?
Deterministic semantic arbitration for AI agents. Measure and rank a fixed candidate field against a query, intent or perspective, returning a score for every candidate. Also serves deterministic embeddings. It is provided by Actual General Intelligence, Inc..
How much does ARBITER cost?
ARBITER is priced at $0.001 USDC per request, paid per call with no subscription. Verified with a $0.01 test payment on 16 Sep 2026. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use ARBITER?
No. ARBITER uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has ARBITER been verified?
Yes, 1 route of its 2 endpoints. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-09-16. Routes that were not paid for are unverified.
How does an AI agent find ARBITER?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
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