Recta

Start here. Call Recta before your agent moves stablecoins or BTC from one blockchain to another (a bridge or cross-chain transfer): give it the route you would use anyway, and it answers, for free, whether a cheaper route exists at the same chain state and proves the saving. If there is none, nothing is charged. Networks: arbitrum, arc, avalanche, base, bitcoin_l1, bnb_chain, ethereum, hyperevm, ink, linea, monad, optimism, polygon, robinhood_chain, solana_mainnet, tron_mainnet, unichain. Assets: BTC, USDC, USDC_BINANCE_PEG, USDG, USDT, USDT_BINANCE_PEG, USDT_OP_BRIDGED. The exact corridors are in the service descriptor. Returns the full guide (llms.txt): what Recta is, the fee (5 % of the verified saving, nothing if none) and the call flow.

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Call before relying on Recta in a run: whether it is ready to evaluate now, and its contract version.

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Call to check whether a planned cross-chain transfer is covered: the supported corridors (source and destination networks and assets), the bridges compared (Across, CCTP, Stargate, USDT0 and others), amount ranges, limits and the JSON Schema of every request and response.

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Call first, before a cross-chain stablecoin or BTC transfer: whether Recta covers the corridor, which routes it compares, which route you can declare as yours, and the contracts a route would touch. Unsigned, free, never reveals a route or a saving.

How many recorded decisions on this corridor found a saving against each route you could declare (counts and dates only). Unsigned and free; use it to decide whether a signed evaluation is worth it.

Returns the full body of the evaluation request for a corridor, an amount and the route you would use anyway (baseline_provider): you fill only your sender, recipient and gas ceilings, then sign it with recta_prepare_signed_request and recta_send_signed_request.

Unsigned trial of an evaluation: send the evaluation request body (from recta_request_template, with your sender and recipient filled) and get whether a cheaper provable route exists for this exact transfer, the saving (lower bound, USDC) and Recta's 5 % of it. Names no route, stores nothing, charges nothing; 3 a day per address. To get the route, sign the same body with recta_prepare_signed_request and recta_send_signed_request.

Step 1 of a free quote for a cross-chain transfer. Computes the exact message the agent's EVM wallet must sign (EIP-191 personal_sign) for one Recta request, and the headers to send. Holds no key and calls nothing. Then call recta_send_signed_request with the same method, path, idempotency_key, body and issued_at, plus the signature. Start with POST /v1/golden-corridor/commercial-evaluations (body: recta_request_template; its "sender" must be the signing address). If you have no wallet tool that can personal_sign, this server cannot sign for you: No signing code needed: the npm package @recta/client builds, checks and signs the request for you, and @recta/mcp (`npx -y @recta/mcp`, key in RECTA_PRIVATE_KEY of a dedicated wallet, kept on your machine) is a local MCP server that does it as tools. Evaluations are free and need no funds.

Step 2: sends the request signed by the agent's own wallet to a Recta route and returns its HTTP status and JSON body. POST /v1/golden-corridor/commercial-evaluations returns, free, the cheapest provable route against the route the agent would use anyway, or an abstention. Executing a decision's route creates a fee of 5 % of the verified saving, capped by the permit the agent signs; no saving, no fee.