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context-transfer-protocol
ctp-spec
Shell2025–2025
context-transfer-protocol / ctp-spec

ctp-spec

CTP is an open JSON standard for transferring AI context between platforms, agents, and models. It provides a structured and portable way of handing off role behaviour, instructions, and relevant metadata such as contacts, companies, and files.

2Distinct people
2Mentions
0Explicit recommenders
11GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

CTP is an open JSON standard for transferring AI context between platforms, agents, and models. It provides a structured and portable way of handing off role behaviour, instructions, and relevant metadata such as contacts, companies, and files.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by hour2 dated mentions

Observed mentions: 2025-09-07 17:56:03 UTC to 2025-09-07 18:00:38 UTC.

012025-09-07 17:00:00 UTC to 2025-09-07 18:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsSep 7, 17:002025-09-07 18:00:00 UTC to 2025-09-07 19:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsSep 7, 18:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Sep 7, 17:002025-09-07 17:00:00 UTC2025-09-07 18:00:00 UTC110
Sep 7, 18:002025-09-07 18:00:00 UTC2025-09-07 19:00:00 UTC101

What Hacker News says

2 sources
gerdydog·Sep 7, 2025Submission

It should be easy to transfer context between models

I often use multiple models throughout the week. Sometimes I like to run the same prompt across them to compare quality, but one really annoying part is having to rebuild the context each time. I’m surprised there isn’t already a standard for this, so I put together a simple JSON format that could make context transfer easier: https://github.com/context-transfer-protocol/ctp-spec I would love feedback on whether something like this actually makes sense, or ways it could be improved. I think models should make portability of context straightforward. P.S. Contributions welcome — feel free to push updates.
1 points · Open discussion

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