streamable-httpApache-2.0updated 3mo ago
The iwant.fyi demand-side protocol defines how AI agents express structured purchase intent on behalf of users, receive matched supply across multiple sources, and report outcomes back. It is MCP-native, transport-flexible, and intentionally agnostic about who matches the demand, who fulfills it, and how money moves.
¿Qué puedes hacer con iwant fyi demand side commerce?
iwant.fyi demand-side protocol
The iwant.fyi demand-side protocol defines how AI agents express structured purchase intent on behalf of users, receive matched supply across multiple sources, and report outcomes back. It is MCP-native, transport-flexible, and intentionally agnostic about who matches the demand, who fulfills it, and how money moves.
Why
Existing agentic commerce protocols are supply-side: ACP and UCP define how an agent completes a purchase at a merchant; AP2 handles payment authorization; MCP is general tool/data access. None of them defines how an agent expresses what its user wants in a structured, machine-matchable form, or how that demand persists across sessions and gets fulfilled across multiple sources.
The iwant.fyi demand-side protocol fills that gap.
Spec
- v1.1 (Draft) — Current. Additive, backward-compatible with v1.0: signed webhooks for Standing Wants (§16), partial-result transparency (§6.1), retryable error taxonomy (§11.2), idempotency keys (§8.4), capability discovery (§8.2), deterministic ordering + cursor (§6.3).
Read it rendered with anchors at iwant.fyi/protocol/v1.
JSON Schema for the core objects: schemas/1.1/ (also served live at
https://iwant.fyi/.well-known/iwantfyi/schemas/1.1/).
Conformance
A test kit verifies any implementation against spec §15:
npx @iwantfyi/conformance-kit --mcp https://iwant.fyi/api/mcp --http https://iwant.fyi/api/v1 --api-key <key>
Source: conformance-kit/ · npm: @iwantfyi/conformance-kit (Apache-2.0). The
reference implementation also self-reports at /api/v1/conformance.
Reference implementation
iwant.fyi — https://iwant.fyi/api/mcp
The iwant.fyi MCP server is the reference implementation. It advertises spec conformance and is the canonical surface to test against.
Official SDKs (all Apache 2.0)
| Framework | Package | Repo |
|---|---|---|
| TypeScript / generic | @iwantfyi/sdk |
staugs/iwantfyi-sdk |
| LangChain (Python) | iwantfyi-langchain |
staugs/iwantfyi-langchain |
| Composio (Python) | iwantfyi-composio |
staugs/iwantfyi-composio |
| CrewAI (Python) | iwantfyi-crewai |
staugs/iwantfyi-crewai |
Three open-source example agents at staugs/iwantfyi-examples.
Status
v1.1 is published as a draft for public comment. Feedback, issues, and proposed extensions are welcome via GitHub issues or directly to hi@iwant.fyi.
License
The specification is published under the Apache License 2.0. Implementations are not required to be open source.
Instalación
Añade iwant fyi demand side commerce a tu cliente. Elige el que uses.
claude mcp add --transport http iwant-fyi-demand-side-commerce https://iwant.fyi/api/mcpcodex mcp add iwant-fyi-demand-side-commerce --url https://iwant.fyi/api/mcp{
"mcpServers": {
"iwant-fyi-demand-side-commerce": {
"url": "https://iwant.fyi/api/mcp"
}
}
}Add to `~/.cursor/mcp.json`, or `.cursor/mcp.json` for a single project.
{
"servers": {
"iwant-fyi-demand-side-commerce": {
"type": "http",
"url": "https://iwant.fyi/api/mcp"
}
}
}Add to `.vscode/mcp.json` in your workspace.
{
"mcpServers": {
"iwant-fyi-demand-side-commerce": {
"url": "https://iwant.fyi/api/mcp"
}
}
}Add to `claude_desktop_config.json`, then restart Claude Desktop.
{
"mcpServers": {
"iwant-fyi-demand-side-commerce": {
"serverUrl": "https://iwant.fyi/api/mcp"
}
}
}Add to `~/.codeium/windsurf/mcp_config.json`.
Puntuación
39 / 100
Incompleta
- Documentación17/25
- Mantenimiento22/25
- Confianza13/20
- Capacidad0/15
- Instalación12/15
- Documents what it does and how to connect
- Has a resolvable package or endpoint
- Exposes at least one tool, prompt or resource
- README has substantive content
- Includes a code example
- Documents its configuration
- Mentions credentials or security posture
- Last commit 85 days ago
- Has a release history
- Repository is not archived
- Licensed Apache-2.0
- Namespace verified in the official MCP registry
- Claimed by its owner
- Published under an organisation
- 0 tool(s) documented
- Provides prompt templates
- Provides resources
- 6 documented install method(s)
- Published to a package registry
- Offers a hosted endpoint — no local install
Historial de versiones
| Versiones | Publicada |
|---|---|
| 1.1.0Última | 9 jun 2026 |
| 1.0.1 | 7 jun 2026 |
| 1.0.0 | 6 jun 2026 |