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Mark O’Brien

@bookmarkobrien.bsky.social
6.7K followers 164 following 1.7K posts

Associate literary agent at Azantian Literary Agency, previously at NetGalley, Writers House, Triada US, and more. Queer, neuroscoundrel, he/him. #1 fan of my perfect cat Monroe and onion rings. Freelance edits: bookmarkobrien.com

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Mark O’Brien @bookmarkobrien.bsky.social · 29/09/2026
Posting on the information superhighway should be like Jeopardy! You posted a cat photo? Points on the board. You participated in the Daily Discourse? Sorry, that’ll cost you.
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Mark O’Brien @bookmarkobrien.bsky.social · 26/09/2026
Ms. Monroe has acquired a new box
My perfect tabby cat Monroe sitting in the corner of her new box, her big eyes as wide as possible, licking her chops as she surveys her queendom
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Mark O’Brien @bookmarkobrien.bsky.social · 25/09/2026
My perfect tabby cat Monroe cuddling in my bed with my leg, looking up at me as I scratch the back of her head how she likes it
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Claire Willett @clairewillett.bsky.social · 19/09/2026
every day of my life I think about the people using “she” to describe this computer program who still need to be convinced to use it for trans women
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Tom Ewing @tomewing.bsky.social · 19/09/2026
Narnia books as Isekai Manga
1. My Sweet Tooth Made Me The Villainess’ Slave
2. In Another World, The Dwarves Picked Me To Lead The Revolution
3. All At Sea With My Level 0 Sailing Skills
4. On A Mission In Another World And I Can’t Remember The Cheat Codes
5. That Time I Got Reincarnated As A Horse
6. Help! My Uncle’s In Love With The Demon Queen!
7. Reincarnated In Another World Just As The Game’s Ending
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Mark O’Brien @bookmarkobrien.bsky.social · 18/09/2026
Two roads diverged in a yellow wood, and I pretty much picked one and moved on with it
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sephirAmy @sephiramy.bsky.social · 17/09/2026
how about some good news: new cat just dropped!!!!
a photo of a small, spotted wild cat, with orange fur and brown circular markings, staring up with big golden eyes.Meet the First New Cat Species Discovered in 100 Years

A small, spotted tiger cat from Bolivia may just be the beginning of a wave of new small cat species.

This 10-year-old male tiger cat is the first of his species (named Leopardus tilcayo) known to science. He is approximately 18 inches from head to end of body and weighs only 3 pounds, making him smaller than the average domestic cat. This video was captured at the Senda Verde Animal Refuge in Bolivia’s Yungas region, where he currently resides.
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Mark O’Brien @bookmarkobrien.bsky.social · 16/09/2026
I'm booking freelance edits for full manuscripts as soon as October. I've worked in book publishing for eleven years at places like Writers House, Triada US, Stonesong, Entangled, and NetGalley, and I have edited #1 best sellers and major award winners. Reach out here! bookmarkobrien.com
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Mark O’Brien @bookmarkobrien.bsky.social · 16/09/2026
Whenever I refer to “the haters,” know that I am talking about my biological family
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Mark O’Brien @bookmarkobrien.bsky.social · 14/09/2026
Keith Riegert, president of the Stable Book Group and CEO of Perfect Bound, has been a vocal advocate for the use of Al in publishing—despite calling himself a "hardcore techno-pessimist." He tells PW, "I do this because you use Al or you die at this point."Meme of a selfie of a bandaged guy in a hospital bed above a text that says “I lived bitch”
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Mark O’Brien @bookmarkobrien.bsky.social · 13/09/2026
Monroe read your posts, and she has concerns.
My perfect tabby cat Monroe looking at the camera with big wide beautiful eyes
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Welcome to Night Vale @nightvaleradio.bsky.social · 09/09/2026
Go off king! Oh wait sorry that was unclear. King, you are being stripped of your crown and exiled. There, much more direct.
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Frog and Toad Bot @frogandtoadbot.bsky.social · 05/09/2026
He got out of bed and had something to eat. Then Toad crossed out: Eat Breakfast.
Toad sits at his breakfast table, studying his to-do list.

From "A List"
In *Frog and Toad Together*
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The Verge @theverge.com · 02/09/2026
As a new Harry Potter trailer makes the rounds, it bears repeating that there’s no way to watch this show without supporting J.K. Rowling’s bigotry and the structural violence she’s inflicting on the trans community.
theverge.com
There is no ethical consumption of HBO’s Harry Potter series
You can’t without supporting Rowling’s transphobic bigotry.
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Mark O’Brien @bookmarkobrien.bsky.social · 27/08/2026
Me, a literary agent who does not read nor represent horror novels and thrillers, says so on his agency’s website, and does not include those genres as options on his QueryManager, when checking my queries every day and seeing more horror novels and thrillers: “Oh.”
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Mark O’Brien @bookmarkobrien.bsky.social · 27/08/2026
My perfect tabby cat Monroe lying on the windowsill, front paw outstretched, gazing out the window at the trees, her reflection visible in the glass if you look closely
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Toss @stevenspoints.bsky.social · 26/08/2026
I really cannot think of a greater honor than to have the Muppets say this about you upon your passing
Instagram post from the official Muppets account: Few humans have earned the title of honorary Muppet more than the legendary Tim Curry. As a performer he was unparalleled - witty, charming, unnerving, and deeply funny. We will always consider it one of our greatest treasures to have been part of Long John Silver’s crew. Thank you for everything, Tim.
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William Shakespeare @shakespeare.lol · 25/08/2026
[Exit Queen.]
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Alex Zalben @azalben.bsky.social · 25/08/2026
Dolly Parton, among a thousand other amazing things she did in her life, gifted over 330 million books to kids through her Imagination Library program. Her passing is a tremendous loss to the world, but you can support the program today to keep it going imaginationlibrary.com
imaginationlibrary.com
Dolly Parton's Imagination Library | USA, UK, IE, CA, AU
Dolly Parton’s Imagination Library is a book gifting program that mails free books to children from birth until they begin school in participating areas.
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Frog and Toad Bot @frogandtoadbot.bsky.social · 23/08/2026
He banged his head against the wall, but he still could not think of a story.
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Mark O’Brien @bookmarkobrien.bsky.social · 11/08/2026
Impressed (derogatory) with the gall of querying writers who do not follow any of my submission guidelines but do, regardless, feel entitled to follow up with me every single day, sometimes more than once a day. You better twirl those red flags.
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Mark O’Brien @bookmarkobrien.bsky.social · 08/08/2026
Every queer person should get a free monthly felony
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William B. Fuckley @opinionhaver.bsky.social · 08/08/2026
Could an LLM extend a meaningful invitation to vampire for purposes of threshold crossing?
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Mark O’Brien @bookmarkobrien.bsky.social · 08/08/2026
Fun bit: telling your gay partner you’d still like them if they were gay. It kinda just always hits. And it’s free!!!
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Mark O’Brien @bookmarkobrien.bsky.social · 08/08/2026
unfortunately i am invisible now due to having been disappeared :(
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Karen K. Ho @karenho.bsky.social · 06/08/2026
it's always odd when "you should expose yourself to more diverse ideas" always means a certain kind of conservatism instead of like, Indigenous art, new fusion foods, math paradoxes, or the Dvorak keyboard layout
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Mark O’Brien @bookmarkobrien.bsky.social · 06/08/2026
Fixed a toilet on my own…
Small baby monkey in white pajamas and a pink headband getting their picture taken against a backdrop of flowers, posing while gazing into the camera, as if to say, “Who, lil ol’ me?”
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Mark O’Brien @bookmarkobrien.bsky.social · 04/08/2026
Post Malone implies the existence of Pre Malone
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Mark O’Brien @bookmarkobrien.bsky.social · 03/08/2026
Close-up of my perfect tabby cat Monroe fast asleep on a green comforter on my bed
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Mark O’Brien @bookmarkobrien.bsky.social · 03/08/2026
real silly girl hours
My perfect tabby cat Monroe lying on the carpet with a rainbow-colored toy wrapped loosely around her ear and held between her front paws
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Veerender Singh Jubbal @veerenderjubbal.bsky.social · 01/08/2026
Sam Altman
@sama •7h
cool use case of chatgpt work i heard last night:
connect your family calendars and explain your kids' interests.
every morning for the drive to school, have it make a podcast that talks about one kid's soccer game that afternoon, one kid's upcoming birthday, some news, etc.
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Alex Hirsch & AlexHirsch
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What if you just talked to your children
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Mark O’Brien @bookmarkobrien.bsky.social · 30/07/2026
I used to read the almanac for fun 💅🏻
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Mark O’Brien @bookmarkobrien.bsky.social · 30/07/2026
What’s the suburban equivalent of “this book made me miss my subway stop”?
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Mark O’Brien @bookmarkobrien.bsky.social · 25/06/2026
I’m being impersonated by a scammer. Like any reputable agent, I will never refer querying writers to a freelance editor. Nor will I contact writers directly from a Gmail account. My agency has some tips for identifying these sorts of scams: www.azantianlitagency.com/scams
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Mark O’Brien @bookmarkobrien.bsky.social · 30/07/2026
It’s always panem et circenses, never panem lightly toasted et a little bit of butter
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Faefyx Collington @faefyx.bsky.social · 29/07/2026
I had a great chat with John Parker on @thegailyshow.org yesterday. Check out the second half for: the EEOC refusing to investigate trans cases, the right’s fury over MyGender Dolls, and anti-trans crusaders turning on women’s rights (as we always said they would). www.youtube.com/live/knPxQzk...
youtube.com
Children’s Theatre Company. Journalist Faefyx Collington on EEOC & Flint Del Sol.
YouTube video by The Gaily Show
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Mark O’Brien @bookmarkobrien.bsky.social · 29/07/2026
My eleven-year anniversary of working in book publishing is on Saturday, and I’m very proud. It is the honor of my life to work with so much incredible art.
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Mark O’Brien @bookmarkobrien.bsky.social · 28/07/2026
Good Monroe morning
My perfect tabby cat Monroe lying in my bed, looking at the camera
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Mark O’Brien @bookmarkobrien.bsky.social · 28/07/2026
Sometimes people will ask me how to become a literary agent, and as I always tell them, step one is finding something else to do
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Mark O’Brien @bookmarkobrien.bsky.social · 24/07/2026
There’s a super special top-secret extra bonus layer of hell for strangers who sign me up for their newsletters
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Cat Manning @catacalypto.bsky.social · 23/07/2026
me logging onto bluesky
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TOM @tomwalker.bsky.social · 17/07/2023
KOKO THE GORILLA: Koko birkin bag. Practical Koko possession bag RESEARCHER: No, Koko. You can’t have a Birkin bag. KOKO: Good Birkin good Koko give beautiful Koko deserve gorilla RESEARCHER: Koko, we simply can’t afford a Birkin bag. It is an unjustifiable expense. KOKO: jealousy professor
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Janet Hill @saskajanet.bsky.social · 22/07/2026
The annual Marge Simpson Convention is on and I’m on the outside, looking in
A group of blue/purple Delphinium flower spikes is visible above a wall of neatly pruned cotoneaster hedge.
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Mark O’Brien @bookmarkobrien.bsky.social · 21/07/2026
Drag name: Lucy Goosey
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Mark O’Brien @bookmarkobrien.bsky.social · 21/07/2026
I would like to be reincarnated as someone who doesn't have an anxiety disorder, please. No worries if not!
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Mark O’Brien @bookmarkobrien.bsky.social · 18/07/2026
One day I'm going to write about classism in book publishing from my POV as a college dropout who's lived 95% of his life in poverty and has worked in the industry for eleven years. Some outlet should pay me for this, actually.
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Mark O’Brien @bookmarkobrien.bsky.social · 17/07/2026
And if I said I used four exclamation points in a three-line work email just now, what then?
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Mark O’Brien @bookmarkobrien.bsky.social · 16/07/2026
Professional achievements: •working with my incredible clients •11 years in book publishing next month •I am the Wikipedia editor who added this image to the article for Becky Albertalli
AOC holding a copy of Becky Albertalli’s debut novel, Simon vs. the Homo Sapiens Agenda
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Mark O’Brien @bookmarkobrien.bsky.social · 16/07/2026
Humans should get the zoomies too
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