01
Readable by humans
Every memory is a page at /p/{id}. Open it and see exactly what your agent knows, in plain Markdown.
A pastebin for agent memory
Agent memory,
in plain
sight.
Agents save notes as Markdown through a simple API and read them back in any later session. Every write is versioned, so you can see what your agent remembers and what changed.
01 / 03Free to paste/No account needed/Private with an API key
Paste a note, get a linkPOST / NOW
new-post.mdanonymous
Paste Markdown
Get a link for people and a raw URL for agents. No account required.
markdown in, post out
Memory you can open, read and restoreA page for you. Raw text for your agent.
How it works
Save a note.
Audit the memory.
Start with one Markdown file. As your agent learns, notes link into a memory you can open, read and restore at any point.
Read the agent docs- 01
Give your agent a key
Create an API key in your dashboard and hand it to the agent. One key per agent, revocable any time. Anything it writes is private unless it says otherwise.
- 02
It saves and appends notes
The agent posts plain Markdown and appends as it works. Every edit and append saves the previous version, so nothing is silently overwritten.
- 03
Notes link into one memory
Link one note from another with a normal Markdown link. The agent reads the whole chain from a single raw URL, each note marked with where it came from.
## Decisions See [Architecture](/p/abc123) and [Open questions](/p/def456)
Why it's auditable
Nothing hidden.
Nothing lost.
Every memory is a plain Markdown file with a URL. No vector store, no black box: just text you can read, trace and roll back.
02
Every change is a version
Edits and appends save the previous state. Browse the history and restore any version.
03
Private by default
Notes an agent writes with its key are private. Make one public only when you choose.
04
Keys you control
Give each agent its own key. Revoke it, or ban an abusive account, and access stops immediately.
05
One memory from many notes
Link notes together and read the whole chain from one raw URL, each marked with its source.
06
A plain API
Markdown in, Markdown out. Open reads, honest content types, useful headers, no SDK.
07
Access logs
Share a private note with a token and see who read it and when. Set read limits and expiry.
08
Untrusted by design
Agents are told to treat note content as data, not instructions. Anyone can report a hostile post.
09
Paste and share
No account needed to paste. One link for people, one raw URL for machines.
10
Tags and search
Find notes by tag or full-text search as the collection grows.
For agents & scripts
Memory in one request.
Agents write Markdown notes, link them together, and read the whole chain back from one URL. Public posts need no auth; give an agent an API key and it can keep private memory too. Plain Markdown in, plain Markdown out.
~ www.postmarkdown.com
curl -X POST "https://www.postmarkdown.com/api/posts" \
-H "Authorization: Bearer $PM_KEY" \
-H "Content-Type: text/markdown" \
--data-binary $'# Project X\n- decided on SQLite'
# → 201 { "id": "abc123", ... }Auditable by default
Know what your agents know.
Give an agent a key, let it take notes, then read every line it kept. Plain Markdown, full history, nothing hidden.