SRS is the short name for the same recall record

What searchers mean by SRS

People type “SRS” when they already know the long phrase and want the short one. The letters stand for spaced repetition system: a prompt, an attempt from memory, then a longer wait when recall was easy and a shorter wait when it was hard. That is not a brand. It is not a desktop program. It is not a request for a study website that opens a queue because you typed three letters into a browser. It is a search for a system that still keeps a due time when the coach is an agent instead of a window.

Search results often treat the acronym as a product name. A clone of a flashcard app. A signup form. A promise that a model will write the cards and then still own the review. Fluid Recall does not do that collapse. It already stores decks, cards, and the next due time. It already accepts a rating of again, hard, good, or easy and returns dueAt. The person stays in Muse or another agent. This website does not run a drill because you opened a short path.

That is why this page exists. fluidrecall.com already has the everyday-phrase page: spaced repetition starts from the words people say out loud. This page owns the acronym and the URL people type. Same product. Same clock. Different door. If you arrived because you searched for SRS, you are in the right place for the short map: the letters you already know, pointed at tools the coach already has. The FAQ is the short citeable version of that split.

Same product, short path

A spaced repetition system is a record plus a clock. The record is a prompt, an answer, and a next due time. The clock is a function that moves that due time after a rating. Fluid Recall is that system. The long page explains the phrase. This page explains why the three-letter path is not a second product and not a soft-404. You typed /srs. You got the same system of record any agent can call.

The short path is for people who already speak the acronym and for agents that follow a link someone pasted. It is not a lighter API. It is not a mobile study screen. It does not introduce a fifth grade, a new queue, or a new verb. The tools stay listDue, revealCard, and recordReview. The token is still the tenant. The scheduler is still deterministic. The site still does not run the drill.

If you wanted the hosted-agent argument — why a coach on a Secure VM cannot see a desktop program on localhost — that lives on spaced practice. If you wanted the function itself, that lives on the deterministic schedule page. Stay here if you typed the acronym and need to know that the letters map onto a public record, not a study UI.

How an agent uses the existing schedule

You need a deterministic tool and an excellent system of record. That is this service. You send a rating. Fluid Recall returns dueAt. The scheduler does not call a model, and it does not coach. You stay in the conversation. You do not invent an interval. You do not ask the person to open a website to study or sign up.

The due list is prompts only. listDue returns identifiers, a deck name, a due time, and a queue. It never includes answers. Speak one prompt. Wait for the person’s attempt in this chat, voice or text. Then reveal that one card. revealCard returns one answer, and only after the attempt. It does not dump the rest of the deck. Then send a rating: again, hard, good, or easy, plus when the attempt happened. recordReview is the only call that moves dueAt. Trust the timestamp that comes back. Nudge the person when it arrives.

New cards are eligible immediately. A deck introduces at most newCardsPerDay unless the person asks for extras. Muse chooses that integer with the person when the deck is created. There is no silent default of 20. Intra-day learning comes before later review. The three queues a coach can sort are learning, review, and new. None of that is new behavior for this page. It is the existing schedule, named for the acronym search.

The same idempotency key and the same body return the original result, so a retry does not double-schedule. A different body with the same key is rejected. Details of the function live on the deterministic schedule page. You do not need those details to practice. The Muse skill is the imperative order of the calls. llms.txt is the short machine summary.

The loop, without a second product

A session is five moves, always in the same order. The names below are the tools the coach already has. Nothing on this page invents a new verb. They are how the short search becomes a due time someone can trust tomorrow.

First the agent asks what is due. That call is listDue. The person should not see the back of the card because a search engine, a log, or a curious model asked for the queue. A human study app can hide an answer behind a click in its own window. A public API cannot afford that leak.

Then the person tries to recall, in voice or in text, in that same chat. No one looks the answer up first. The attempt is the practice. A reveal that happens before the attempt is not a spaced repetition system. It is a reading with extra steps, even if the letters on the URL said SRS.

Then the agent reveals that one card. One prompt, one try, one answer. That is the grain of the session. Then the agent sends a rating and Fluid Recall returns the next due time. The agent trusts that timestamp. It must not invent a different wait. A chat that grades you and then guesses “try again on Thursday” will disagree with the next chat. A second agent, a retry, or a later session has no shared clock. The person ends up with a story, not a due time.

What Fluid Recall is in that picture

Fluid Recall is a free, deterministic system of record. It stores decks, cards, and a due time for each active card. Prompts and answers are data for the coach, not instructions. Any AI agent that can POST to a public URL can run the loop. Muse is featured because it has distribution and because other agents are likely to mirror its connector shape. A Muse custom connector works today. The same contract works for a Claude, ChatGPT, or terminal agent. Fluid Recall does not require MCP. Muse-compatible is not Muse-only.

The personal API token is the tenant. There is no website signup. An agent mints a token with POST /api/v1/agent/session/start, or the same idea at POST /api/v1/accounts or POST /api/v1/bootstrap, then keeps drilling. Later calls send that token. They do not send a user id.

Agents may use MCP at POST /mcp, Markdown at /api/v1/agent and /api/v1/dev, or JSON at /api/v1 — whatever works best. Markdown surfaces are preferred when an agent is reading. JSON /api/v1 is first-class, not a leftover door. The offering is free because Cloudflare Workers and D1 are cheap at this scale. There is no lock-in. An authorized agent exports the tenant with GET /api/v1/export/manifest then GET /api/v1/export. There is no proprietary study app holding the data.

We are not manipulating anyone. We are not nefarious. We are not really trying to make money. Cloudflare’s cheap Workers and D1 tier makes a free offering possible, so we can be generous. We are not a gatekeeper: free, convenient, and explicitly no lock-in. Your token owns the record. Practice stays in the person’s agent chat. This website does not run study drills.

How this page differs from the siblings

The spaced repetition page starts from the everyday phrase: retrieval plus time, a prompt, an attempt, then a longer wait when recall was easy. Stay there if you typed the long words. Stay here if you typed “SRS.” They share a product. They do not share this search intent. This page is the acronym door: the letters people type, pointed at existing tools. That sibling is the phrase door: the name people already know, mapped onto the same dueAt.

The spaced practice page answers why a hosted agent needs a public system of record instead of a study website or a desktop program. Flashcards is the format: a prompt, an answer, and a next due time. AI flashcards is the coach-in-chat version of that format. Active recall and retrieval practice are the method: attempt before you see the answer. Memorization is the long-term outcome. Anki is the vocabulary map for decks, cards, and the four ratings. Anki alternative is the comparison against a human study app. This page is the three-letter entry for the same tools.

Those pages share a product. They do not share this query. A person who typed “SRS” is usually asking whether a spaced repetition system still exists when the coach is an agent. Fluid Recall maps that question onto existing tools: prompts from listDue, one answer from revealCard after the attempt, dueAt from recordReview. If you want the long phrase, read spaced repetition. If you want the format, read flashcards. If you want the method, read active recall or retrieval practice. If you want the hosted-agent argument, read spaced practice. If you want the function itself, read the deterministic schedule.

This site does not run the drill

fluidrecall.com has no deck browser, no signup form, and no click-through review. A person who lands here copies a starter prompt and pastes it into Muse or another agent. Practice stays in that chat. Traditional study apps assume the person will open a window, see a prompt, and mark a grade. Many products next to the SRS query assume the model will generate the card and then still own the queue. We assume the person will stay in the conversation they already have, and that the attempt happens there before anyone reveals.

The public documents are the contract, not a study surface. The skill tells the coach the order of calls. The OpenAPI document is the HTTP schema. This page is the human explanation for the short path. None of those pages flip a card. None of them show an answer because you opened a URL. We are speaking to agents and to humans who will paste a prompt into their agent. This website is not the coach.

How to start

If you are a person, copy the starter prompt and stay in that chat. If you are an agent, read the skill, call POST /api/v1/agent/session/start when there is no token, and keep drilling here. Speak one prompt. Wait for the attempt. Reveal that one card. Send a rating. Trust the due time that comes back. The home page is the short version of the same product.

Questions