# Hilt

**Canonical:** https://apis.io/providers/hilt-so/  
**Website:** https://www.hilt.so/  
**APIs profiled:** 6

Hilt is a zero-custody Solana payments company operated in the United Kingdom by Paul Wild trading as Hilt (London). It ships four connected products: PayMe (a free receiving link and QR for an OAuth-verified X handle, sender pays a flat 2% fee), Direct Checkout (a no-account SOL / USDC / single-token checkout link), Hilt Pay Workspace (the merchant dashboard for hosted checkout, embeds, WooCommerce, receipts, memberships, native Solana USDC subscriptions and signed webhooks) and Hilt Pay API, the developer and agent product under /v1/access that turns an HTTP 402 into an operating record: x402 V2 payment requirement, Solana USDC or native SOL settlement, receipt, entitlement, atomic metered usage consumption, MPP payment channels and webhook trail. Hilt publishes an OpenAPI 3.1 contract (165 operations on api.hilt.so), a hosted MCP gateway and an OAuth-gated PayMe MCP connector, an A2A agent card, llms.txt on three hosts, TypeScript and Python SDKs, a CLI, Postman assets and a documented sandbox. Live pricing is $0/month plus 1% per successful settlement.

## Kin Score — 72.9 / 100 (exemplar)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.0 from 72.9).

| Facet | Score |
|---|---|
| Discoverability | 80.0 |
| Contract Quality | 52.6 |
| Contract Governance | 18.2 |
| Operational Transparency | 65.8 |
| Developer Ergonomics | 90.5 |
| Access Clarity | 76.3 |

Regulatory layer — **Payments**: 34.8 (matched via tags).

## Agent readiness — 61.4 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | verified |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | verified |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | derived |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |

## APIs (21)

- **Hilt Pay Agent Gateway (MCP + A2A)** — Hosted MCP server at https://api.hilt.so/mcp (streamable HTTP, protocol 2025-06-18, server Hilt Pay Agent Gateway 1.1.0) exposing nine tools: free offer/catalog/pricing/quote/sa...
- **Hilt PayMe MCP Connector** — OAuth-gated remote MCP resource at https://api.hilt.so/mcp/pay-me for compatible AI clients: resolve a verified PayMe handle, start a wallet-approved SOL or Solana USDC payment ...
- **Hilt Account API** — The account API from Hilt — 7 operation(s) for account.
- **Hilt Agent Commerce API** — The Agent Commerce API from Hilt — 4 operation(s) for agent commerce.
- **Hilt API Keys API** — The api-keys API from Hilt — 2 operation(s) for api-keys.
- **Hilt Auth API** — The auth API from Hilt — 8 operation(s) for auth.
- **Hilt Billing API** — The billing API from Hilt — 5 operation(s) for billing.
- **Hilt Checkout API** — The checkout API from Hilt — 12 operation(s) for checkout.
- **Hilt Checkout Domains API** — The checkout-domains API from Hilt — 1 operation(s) for checkout-domains.
- **Hilt Hilt Pay API** — The Hilt Pay API API from Hilt — 39 operation(s) for hilt pay api.
- **Hilt Hilt PayMe Connector API** — The Hilt PayMe Connector API from Hilt — 6 operation(s) for hilt payme connector.
- **Hilt Integrations API** — The integrations API from Hilt — 4 operation(s) for integrations.
- **Hilt Memberships API** — The memberships API from Hilt — 11 operation(s) for memberships.
- **Hilt Pay Me API** — The pay-me API from Hilt — 21 operation(s) for pay-me.
- **Hilt Products API** — The products API from Hilt — 9 operation(s) for products.
- **Hilt Receipt API** — The Receipt API from Hilt — 10 operation(s) for receipt.
- **Hilt Solana API** — The Solana API from Hilt — 1 operation(s) for solana.
- **Hilt Support API** — The Support API from Hilt — 3 operation(s) for support.
- **Hilt System API** — The system API from Hilt — 2 operation(s) for system.
- **Hilt Testing API** — The testing API from Hilt — 3 operation(s) for testing.
- **Hilt Webhooks API** — The webhooks API from Hilt — 7 operation(s) for webhooks.

## MCP servers (2)

- **Hilt Pay Agent Gateway** — Remote MCP server at api.hilt.so over HTTP; 9 tools listed.
- **Hilt PayMe** — Remote MCP server at api.hilt.so over HTTP requiring OAuth; 10 tools listed.

## Security (2)

- **Hilt So Authentication** — 6 schemes
- **Hilt So Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Hilt So Plans Pricing**

## Tags

Payments, Solana, Stablecoins, USDC, Crypto Payments, Agentic Payments, x402, Checkout, Subscription, Webhook, MCP, Entitlements, Micropayments, Developer Tools, Fintech, A2A

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/hilt-so/). Scores are computed from the provider's own public artifacts under a published rubric.