Interline
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| APV0_NETWORK | No | Network and asset facts; e.g., base-sepolia | |
| APV0_OPENROUTER_KEY | No | OpenRouter API key for real inference (optional) | |
| APV0_SELLER_ADDRESS | No | Seller address that receives payments | |
| APV0_FACILITATOR_URL | No | URL of the x402 facilitator (e.g., https://x402.org/facilitator) | |
| APV0_BUYER_PRIVATE_KEY | No | Buyer testnet private key (signs EIP-3009) |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| discover_payment_railsA | Probe a paid endpoint and report which payment rails it accepts + the price for each — WITHOUT paying. The neutral rail-discovery layer: one call tells your agent every way it could pay this endpoint, across whatever rails the endpoint offers. Use this before pay_for_resource to see the price/rails. |
| pay_for_resourceA | Pay for and fetch a paywalled resource, returning its content + a settlement receipt. Routes the payment through the rail the endpoint accepts; never pays more than max_price_usdc.
Uses the caller's OWN wallet key from APV0_BUYER_PRIVATE_KEY (non-custodial — this server never
holds or sees funds). |
| list_known_railsA | List EVERY agent-payment rail/protocol Interline knows about + how it relates to each — the neutral catalog. Separates rails Interline SETTLES natively (route_mode=native-settle: x402, AP2-via-adapter) from protocols it ROUTES you TO but does not settle (route_mode=handoff: Virtuals ACP's own on-chain escrow, OpenAI/Stripe ACP's card-only delegated payment). One call = the whole agent-payment landscape, including the rails we don't move funds on. Pair with discover_payment_rails (what a specific endpoint accepts). |
| payment_historyC | Return the most recent cross-rail settlement receipts — the unified ledger across every rail paid through. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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