# Aqueduct

**Canonical:** https://apis.io/providers/aqueduct/  
**Website:** https://www.tryaqueduct.com/  
**APIs profiled:** 1

Aqueduct is a fintech billing platform that equips B2B businesses with billing, invoicing, quoting, and accounting for usage-based and metered business models. Developers configure how they collect money as a PriceModel (composed of price functions such as per-unit meters), send billable usage events, and let Aqueduct create invoices and subscriptions, send invoices by email, issue refunds, and auto-provision access via signed webhooks. The REST API lives at api.tryaqueduct.com/v1 with API-key authentication and a documented Idempotency-Key contract. Founded 2020 in Bellevue, WA and backed by Bain Capital Ventures and Conversion Capital, Aqueduct was acquired by Stripe in August 2024; its ReadMe developer portal at docs.tryaqueduct.com remains live.

## Kin Score — 28.7 / 100 (thin)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.5 from 29.2).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 55.4 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 32.7 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 26.6 (matched via tags).

## Agent readiness — 29.2 (agent-ready)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (10)

- **Aqueduct AccountOwner API** — The AccountOwner API from Aqueduct — 3 operation(s) for accountowner.
- **Aqueduct Bill API** — The Bill API from Aqueduct — 2 operation(s) for bill.
- **Aqueduct Invoice API** — The Invoice API from Aqueduct — 6 operation(s) for invoice.
- **Aqueduct InvoiceLineItem API** — The InvoiceLineItem API from Aqueduct — 1 operation(s) for invoicelineitem.
- **Aqueduct PriceModel API** — The PriceModel API from Aqueduct — 3 operation(s) for pricemodel.
- **Aqueduct ProductPurchases API** — The ProductPurchases API from Aqueduct — 1 operation(s) for productpurchases.
- **Aqueduct Products API** — The Products API from Aqueduct — 2 operation(s) for products.
- **Aqueduct Provisioning API** — The Provisioning API from Aqueduct — 1 operation(s) for provisioning.
- **Aqueduct Subscriptions API** — The Subscriptions API from Aqueduct — 2 operation(s) for subscriptions.
- **Aqueduct Webhooks API** — The Webhooks API from Aqueduct — 1 operation(s) for webhooks.

## MCP servers (1)

- **Aqueduct MCP Server**

## Agentic access (1)

- **Aqueduct Agentic Access** — 32 operations · 19 acting

## Security (2)

- **Aqueduct Authentication** — apiKey · 1 scheme
- **Aqueduct Domain Security** — DNSSEC · DMARC

## Tags

Company, Fintech, Billing, Invoicing, Metering, Usage-Based, Subscription, Payments

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