# iwant.fyi

**Canonical:** https://apis.io/providers/iwant-fyi/  
**Website:** https://iwant.fyi/  
**APIs profiled:** 4

iwant.fyi is a demand-side commerce service and reverse marketplace for AI agents: buyers (or agents acting for them) post structured purchase intent — a "Want" with budget, condition floor, location and per-vertical specs — and receive supply ranked across native sellers, Shopify, Klarna and live dealer inventory in one call, with the constraints enforced rather than treated as keywords. It is the reference implementation of the open, Apache-2.0 iwant.fyi demand-side protocol (v1.1), reachable over a hosted MCP server, an A2A endpoint that needs no key, a JSON HTTP fallback under /api/v1 and a legacy REST marketplace API, with six official SDKs, signed standing-want webhooks, published JSON Schemas and a conformance kit.

## Kin Score — 60.6 / 100 (strong)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+2.6 from 58.0).

| Facet | Score |
|---|---|
| Discoverability | 80.0 |
| Contract Quality | 59.6 |
| Contract Governance | 18.2 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 78.6 |
| Access Clarity | 65.8 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 32.4 (matched via fallback).

## Agent readiness — 43.0 (agent-ready)

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

## APIs (6)

- **iwant.fyi Demand-Side Protocol HTTP Fallback** — The canonical protocol surface for agents that do not speak MCP — POST /wants, GET /wants/{id}, POST /search, POST /outcomes, GET /verticals, GET /constraints, GET /health, GET ...
- **iwant.fyi MCP Server** — Hosted streamable-HTTP Model Context Protocol server at https://iwant.fyi/api/mcp (protocol 2025-06-18). initialize and tools/list are public, and ten demand.* tools — search, f...
- **iwant.fyi A2A Agent** — Agent-to-Agent endpoint at https://iwant.fyi/api/a2a (JSON-RPC message/send and tasks/get) that needs no key: send plain text describing what the user wants and receive ranked m...
- **iwant.fyi Agents API** — The Agents API from iwant.fyi — 2 operation(s) for agents.
- **iwant.fyi MCP API** — The Mcp API from iwant.fyi — 1 operation(s) for mcp.
- **iwant.fyi Wants API** — The Wants API from iwant.fyi — 2 operation(s) for wants.

## MCP servers (1)

- **iwant.fyi MCP Server** — Remote MCP server at iwant.fyi over HTTP requiring an API key; 26 tools listed.

## Agentic access (1)

- **Iwant Fyi Agentic Access** — 8 operations · 4 acting

## Security (2)

- **Iwant Fyi Authentication** — http/none · 3 schemes
- **Iwant Fyi Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Iwant Fyi Plans Pricing**

## Tags

Agentic Commerce, Marketplace, AI Agents, Purchase Intent, Shopping, Automotive, MCP, A2A, Open Protocol, x402, Agent-Native

---

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