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Payment HTTP Authentication Scheme (draft-httpauth-payment, Tempo Labs and Stripe)

IETFspecificationcontext entry

Verified 2026-10-14. Status as of 2026-10-14. All entries.

Seams: S4

Status

Individual draft-httpauth-payment-01 (2026-09-09), Standards Track intended, no Working Group (WG), expires 2027-03-13; authors from Tempo Labs and Stripe. The datatracker record of 2026-10-13 gives revision 01 (time 2026-09-09 16:08 UTC) and no later revision.

Relevance

On receipts, -01 reads "Servers SHOULD include a Payment-Receipt header on successful responses"; the receipt table has four fields (status, method, timestamp, reference) and no signature field.

Committed next

None declared in the sources read.

Sources

Neighbours in the map

Neighbours of Payment HTTP Authentication Scheme (draft-httpauth-payment, Tempo Labs and Stripe) in the map Each circle is an entry of the map and links to its page; the colour is the kind of body behind it, a filled circle is a core entry and a dashed circle a context entry. The entry in the middle, with the entries it overlaps and the entries named by the same seams. Overlaps (1)Share a seam (13)x402 (Linux Foundation, core)x402 IETF vcon (Virtualized Conversations WG) (IETF, core)IETF vcon S4 AAIF Agentic Commerce Working Group (AAIF, core)AAIF Agentic Commerce W… S4 Browser vendor positions on WebMCP (WebKit, Mozilla, Chrome, Edge) (Independent, core)Browser vendor position… S4 EMILIA Protocol (individual drafts and open-source gate) (Independent, context)EMILIA Protocol S4 Agent Payments Protocol (AP2) (Industry, core)Agent Payments Protocol S4 Agentic Commerce Protocol (ACP) (Industry, core)Agentic Commerce Protoc… S4 EMV Agentic Payments Framework for Specifications (draft for public feedback) (Industry, core)EMV Agentic Payments Fr… S4 FIDO Alliance agentic authentication and payments work (Industry, context)FIDO Alliance agentic a… S4 Personal Agent Consent & Trust Protocol (PACT), published by Decagon with Instinct (Industry, core)Personal Agent Consent… S4 Personal Agent Protocol (PAP, "Poppy"), published by Sierra with Meta (Industry, core)Personal Agent Protocol S4 Shopify, MCP surfaces for buyer agents, developers and merchants (Industry, context)Shopify S4 Universal Commerce Protocol (UCP) (Industry, core)Universal Commerce Prot… S4 Verifiable Intent (Industry, core)Verifiable Intent S4 Payment HTTP Authentication…

Solid lines: overlaps declared by one of the two entries. Dashed lines, coloured by seam: entries named by the same seam (S1 to S4) in the seams note. Every node is a link.

Evidence and coverage

Read
On 2026-10-13: the datatracker record.
Not read
Full -01 text, payment method and intent specifications on mpp.dev, software development kit (SDK) licensing, IETF list discussion, Tempo pages. mpp.dev was not read again on 2026-10-14: its robots.txt carries the signal ai-input=no.
Not found
Not found, 2026-10-03, in -01: agent protocol, card network, AP2, x402, Verifiable Intent; in the eight lists: the draft name. The Stripe page on the Machine Payments Protocol (MPP), read 2026-10-14, describes MPP as "co-authored by Stripe and Tempo" and does not mention this draft; a statement by a primary source that links the draft to MPP: not found there.