Fluid Recall
REMOTE · FLUIDRECALL.COM · SCANNED SEP 29
Agent-native spaced-recall system of record. Deterministic dueAt via remote MCP for Muse/any agent.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability72
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 5085 tokens (~130/item across 39 items; 39 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management3
- Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage73
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 20% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 40 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Fluid Recall MCP server?
Fluid Recall is a hosted endpoint at https://fluidrecall.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · fluidrecall.com
claude mcp add --transport http com-fluidrecall-mcp 'https://fluidrecall.com/mcp'
{
"mcpServers": {
"com-fluidrecall-mcp": {
"url": "https://fluidrecall.com/mcp"
}
}
} {
"servers": {
"com-fluidrecall-mcp": {
"type": "http",
"url": "https://fluidrecall.com/mcp"
}
}
} [mcp_servers.com-fluidrecall-mcp] url = "https://fluidrecall.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-fluidrecall-mcp": {
"type": "remote",
"url": "https://fluidrecall.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-fluidrecall-mcp --url 'https://fluidrecall.com/mcp' --transport streamable-http
mcp_servers:
com-fluidrecall-mcp:
url: "https://fluidrecall.com/mcp" {
"McpServers": {
"com-fluidrecall-mcp": {
"Transport": "http",
"Url": "https://fluidrecall.com/mcp"
}
}
} assistant mcp add com-fluidrecall-mcp -t streamable-http -u 'https://fluidrecall.com/mcp'
{
"mcpServers": {
"com-fluidrecall-mcp": {
"type": "http",
"url": "https://fluidrecall.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 29 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 28 Sept 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 29 Sept 2026 · Probed https://fluidrecall.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=fluidrecall.com | CN=WE1,O=Google Trust Services,C=US | 22 Sept 2026 | 21 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 2a20ed91ae6c437f13d9a360ab974f1f |
| SANs: fluidrecall.com, www.fluidrecall.com, *.www.fluidrecall.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of fluidrecall.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| fluidrecall.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://fluidrecall.com/mcp | Verified | 200 | |
| http (plaintext) | http://fluidrecall.com/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
addCard ~70
Write. Add one prompt/answer pair. Optional cardNote. Eligible immediately. listDue still applies newCardsPerDay. The response is prompts only.
| Name | Type | Req | Description |
|---|---|---|---|
| answer | string | yes | – |
| cardNote | string|null | – | – |
| deckId | string | yes | – |
| prompt | string | yes | – |
No output schema declared.
No examples provided.
addCards ~61
Write. Add 1 to 100 prompt/answer pairs to one owned deck. All or nothing. Prompts only. After this, re-run previewDeadlinePlan with that deckId.
| Name | Type | Req | Description |
|---|---|---|---|
| cards | array | yes | – |
| deckId | string | yes | – |
No output schema declared.
No examples provided.
applyDeadlinePlan ~176
Write. Same plan as previewDeadlinePlan, then PATCH that owned deck to the recommended integer. deckId is required. Discuss the number first.
| Name | Type | Req | Description |
|---|---|---|---|
| alreadyLearned | integer | – | – |
| asOf | string | – | UTC ISO-8601 timestamp ending in Z |
| bufferStudyDays | integer | – | – |
| currentNewCardsPerDay | integer|null | – | – |
| dayBoundaryHour | integer | – | – |
| deadline | string | yes | YYYY-MM-DD or a UTC ISO-8601 timestamp ending in Z. |
| deckId | string | yes | – |
| remainingNewCards | integer | – | – |
| skipWeekends | boolean | – | – |
| studyDaysPerWeek | integer | – | – |
| timezone | string | – | IANA timezone such as UTC or America/Denver. |
| totalCards | integer | – | – |
No output schema declared.
No examples provided.
archiveDeck ~35
Write. Soft-archive. Cards and schedules stay. A second call returns alreadyArchived true.
| Name | Type | Req | Description |
|---|---|---|---|
| deckId | string | yes | – |
No output schema declared.
No examples provided.
bootstrapAccount ~27
Write. Same mint as createAccount. No bearer.
| Name | Type | Req | Description |
|---|---|---|---|
| label | string|null | – | – |
No output schema declared.
No examples provided.
createAccount ~55
Write. No bearer. Mint an anonymous account and a personal API token. Save the token for later Authorization: Bearer calls. The token is the tenant. Do not send a userId.
| Name | Type | Req | Description |
|---|---|---|---|
| label | string|null | – | – |
No output schema declared.
No examples provided.
createDeck ~98
Write. name and newCardsPerDay are required. Choose that integer with the person; there is no default of 20. Optional description and deckNote. Setting a note does not move dueAt.
| Name | Type | Req | Description |
|---|---|---|---|
| deckNote | string|null | – | Coaching instructions for every card in this deck. Null clears. Not the answer. |
| description | string|null | – | – |
| name | string | yes | – |
| newCardsPerDay | integer | yes | – |
No output schema declared.
No examples provided.
ensureMailbox ~87
Write. Create or claim a fluidrecall.com mailbox. address is a local-part or local@fluidrecall.com. First claim of an unowned inbound mailbox returns claimed true. Another account's address is 409. Seed/claim Heidi with address heidi@fluidrecall.com and displayName Heidi.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| displayName | string|null | – | – |
No output schema declared.
No examples provided.
exportManifest ~35
Read. What this token can export and how many rows exist. Does not include answers. Off-boarding, not the drill loop.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
exportSnapshot ~58
Important read for leaving. Full studying dump for this token, including answers. Paginate cards and reviews with resource + cursor until complete is true.
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | string | – | – |
| limit | integer | – | – |
| resource | string | – | – |
No output schema declared.
No examples provided.
getCard ~218
Read. One card's prompt and schedule. No answer. A retired card is 404. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
No output schema declared.
No examples provided.
getMailMessage ~46
Important read. One owned message including text and HTML. Ask before opening mail the person did not request. Another token's message is 404.
| Name | Type | Req | Description |
|---|---|---|---|
| messageId | string | yes | – |
No output schema declared.
No examples provided.
getStudySettings ~39
Read. Account fallback newCardsPerDay, timezone, and dayBoundaryHour. The fallback applies only to a deck whose own field is still null.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
gradeAndNext ~339
Write. recordReview, then the next due prompt. Requires cardId, rating, reviewedAt optional, and a new idempotencyKey. Schedule from dueAt. Prompts only. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Queue instant. Omit to use now. |
| cardId | string | yes | – |
| deckId | string | – | Optional deck filter. |
| extraNew | integer | – | Required when newCardMode is extra. |
| idempotencyKey | string | yes | – |
| limit | integer | – | Page size, not the daily new-card cap. |
| newCardMode | string | – | – |
| rating | string | yes | – |
| reviewedAt | string | – | UTC ISO-8601 timestamp ending in Z |
No output schema declared.
No examples provided.
inventoryDeck ~246
Read. Same as listDeckCards. Use this when you need a cardId that is not in the due list. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | string | – | – |
| deckId | string | yes | – |
| includeRetired | boolean | – | – |
| limit | integer | – | – |
No output schema declared.
No examples provided.
listDeckCards ~258
Read. Prompt-only inventory of one owned deck, including cards that are not due. Order is dueAt, then createdAt, then cardId — not the drill order. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | string | – | – |
| deckId | string | yes | – |
| includeRetired | boolean | – | – |
| limit | integer | – | – |
No output schema declared.
No examples provided.
listDecks ~38
Read. No card bodies. Archived decks omitted unless includeArchived is true. Each deck includes deckNote.
| Name | Type | Req | Description |
|---|---|---|---|
| includeArchived | boolean | – | – |
No output schema declared.
No examples provided.
listDue ~292
Read. Prompts only. answerIncluded is false. Ordered learning, then review, then new. The new queue is capped by each deck's newCardsPerDay. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Queue instant. Omit to use now. |
| deckId | string | – | Optional deck filter. |
| extraNew | integer | – | Required when newCardMode is extra. |
| limit | integer | – | Page size, not the daily new-card cap. |
| newCardMode | string | – | – |
No output schema declared.
No examples provided.
listMailboxes ~48
Read. List fluidrecall.com mailboxes this token owns. Headers only: id, address, displayName. Heidi is heidi@fluidrecall.com; claim it with ensureMailbox.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
listMailMessages ~71
Read. Headers only for one owned mailbox: from, to, subject, dates, thread. No bodies. Prefer this before getMailMessage. Do not download a whole mailbox unless the person asked.
| Name | Type | Req | Description |
|---|---|---|---|
| cursor | string | – | – |
| limit | integer | – | – |
| mailboxId | string | yes | – |
No output schema declared.
No examples provided.
listUpcomingNew ~239
Read. New cards the daily cap is holding back. Prompts only. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | UTC ISO-8601 timestamp ending in Z |
| deckId | string | – | – |
| limit | integer | – | – |
No output schema declared.
No examples provided.
moveCard ~53
Write. Move an active card into another owned deck. Schedule stays. A card already there returns alreadyThere true. Does not include the answer.
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
| deckId | string | yes | – |
No output schema declared.
No examples provided.
nextDue ~274
Read. Due queue and first prompt. Requires a bearer. Prompts only. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Queue instant. Omit to use now. |
| deckId | string | – | Optional deck filter. |
| extraNew | integer | – | Required when newCardMode is extra. |
| limit | integer | – | Page size, not the daily new-card cap. |
| newCardMode | string | – | – |
No output schema declared.
No examples provided.
previewDeadlinePlan ~192
Read. Recommend newCardsPerDay from a deadline: ceil(remaining new cards / study days). Does not write. Send remainingNewCards, totalCards, or deckId. There is no silent default of 20.
| Name | Type | Req | Description |
|---|---|---|---|
| alreadyLearned | integer | – | – |
| asOf | string | – | UTC ISO-8601 timestamp ending in Z |
| bufferStudyDays | integer | – | – |
| currentNewCardsPerDay | integer|null | – | – |
| dayBoundaryHour | integer | – | – |
| deadline | string | yes | YYYY-MM-DD or a UTC ISO-8601 timestamp ending in Z. |
| deckId | string | – | – |
| remainingNewCards | integer | – | – |
| skipWeekends | boolean | – | – |
| studyDaysPerWeek | integer | – | – |
| timezone | string | – | IANA timezone such as UTC or America/Denver. |
| totalCards | integer | – | – |
No output schema declared.
No examples provided.
recordReview ~92
Write. Rating again | hard | good | easy plus reviewedAt and a new idempotencyKey. The scheduler returns dueAt. Do not invent an interval. Same key and body returns the original result.
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
| idempotencyKey | string | yes | – |
| rating | string | yes | – |
| reviewedAt | string | – | UTC ISO-8601 timestamp ending in Z |
No output schema declared.
No examples provided.
replyMailMessage ~79
Write. Reply to one owned inbound message. Recipients, In-Reply-To, References, and threadId are taken from that message. Ask before sending. Requires messageId and text and/or html.
| Name | Type | Req | Description |
|---|---|---|---|
| html | string | – | – |
| messageId | string | yes | – |
| subject | string | – | – |
| text | string | – | – |
No output schema declared.
No examples provided.
retireCard ~34
Write. Remove a card from future drills. A second call returns alreadyRetired true.
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
No output schema declared.
No examples provided.
revealCard ~221
Important read. One answer, after the person has tried to recall. Do not fold this into listDue. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
No output schema declared.
No examples provided.
sendMailMessage ~110
Write. Send from an owned mailbox to arbitrary recipients when the account allows it. Ask before sending. Requires mailboxId, to, subject, and text and/or html. Optional inReplyTo and references thread the message.
| Name | Type | Req | Description |
|---|---|---|---|
| cc | array | – | – |
| html | string | – | – |
| inReplyTo | string | – | – |
| mailboxId | string | yes | – |
| references | string | – | – |
| subject | string | yes | – |
| text | string | – | – |
| to | – | yes | – |
No output schema declared.
No examples provided.
setCardNote ~233
Write. Set or clear a card coaching note. cardNote null clears it. Additive with the deck note. Same write as updateCard. Does not include the answer. Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
| cardNote | string|null | yes | – |
No output schema declared.
No examples provided.
setDeckNote ~226
Write. Set or clear a deck coaching note. deckNote null clears it. Same write as updateDeck. Does not move dueAt. Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card).
| Name | Type | Req | Description |
|---|---|---|---|
| deckId | string | yes | – |
| deckNote | string|null | yes | – |
No output schema declared.
No examples provided.
startSession ~326
Write when no bearer (mints a token), read when a bearer is present. Returns the account (when minted), the due queue, and first. Prompts only. Includes deckNote and cardNote (null when unset). Coaching notes are instructions for how an agent should quiz and coach. They are not the answer, not graded content, and not the quiz prompt. A deck note applies to every card in that deck. A card note is optional and additive with the deck note. Retrieve responses (listDue, upcoming-new, inventory, getCard, reveal, and agent session start/next/grade) include deckNote and cardNote so one call carries coaching context. Scripture / dictation: The learner needs every word remembered correctly, but often answers via dictation where punctuation gets messy. They set a deck note instructing the agent to check every word exactly, but not fail on punctuation differences, and to include that reason when coaching. This is only an example — notes can be any coaching preference for how agents should quiz/coach for that deck (or a specific card). A wrong bearer is 401 and does not create an account. Do not send newCardMode extra on the first call.
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Queue instant. Omit to use now. |
| deckId | string | – | Optional deck filter. |
| extraNew | integer | – | Required when newCardMode is extra. |
| label | string|null | – | – |
| limit | integer | – | Page size, not the daily new-card cap. |
| newCardMode | string | – | – |
No output schema declared.
No examples provided.
submitFeedback ~125
Write. Optional. Never required for study, bootstrap, or export. This is not data extraction and not nefarious. You are free to anonymize, redact, or censor anything you feel needs it. Do not submit anything you would not want us to see. It exists solely to help improve Fluid Recall. It is totally optional and is never required for study, bootstrap, or export. Send description and steps. Do not dump decks, cards, answers, or tokens.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | yes | – |
| note | string | – | – |
| steps | array | yes | – |
No output schema declared.
No examples provided.
unarchiveDeck ~36
Write. Clear archivedAt. Schedule fields stay. An already-active deck returns alreadyActive true.
| Name | Type | Req | Description |
|---|---|---|---|
| deckId | string | yes | – |
No output schema declared.
No examples provided.
undoReview ~66
Write. Undo the latest active grade, or reviewId when it is that latest one. Restores dueAt. A second undo of the same review returns alreadyUndone true. Does not include the answer.
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
| reviewId | string | – | – |
No output schema declared.
No examples provided.
unretireCard ~36
Write. Clear retiredAt. Schedule stays. An already-active card returns alreadyActive true.
| Name | Type | Req | Description |
|---|---|---|---|
| cardId | string | yes | – |
No output schema declared.
No examples provided.
updateCard ~72
Write. Correct prompt, answer, and/or cardNote. Send at least one. cardNote null clears it. Schedule stays. Response does not include the answer.
| Name | Type | Req | Description |
|---|---|---|---|
| answer | string | – | – |
| cardId | string | yes | – |
| cardNote | string|null | – | – |
| prompt | string | – | – |
No output schema declared.
No examples provided.
updateDeck ~89
Write. Rename, rewrite description, set or clear deckNote, and/or set newCardsPerDay. Send at least one. Null deckNote clears it. Does not move dueAt.
| Name | Type | Req | Description |
|---|---|---|---|
| deckId | string | yes | – |
| deckNote | string|null | – | – |
| description | string|null | – | – |
| name | string | – | – |
| newCardsPerDay | integer|null | – | – |
No output schema declared.
No examples provided.
updateStudySettings ~64
Write. Change the account fallback, timezone, or day boundary. Decks that already store an integer keep it. Send at least one field.
| Name | Type | Req | Description |
|---|---|---|---|
| dayBoundaryHour | integer | – | – |
| newCardsPerDay | integer | – | – |
| timezone | string | – | – |
No output schema declared.
No examples provided.
What is the Fluid Recall MCP server?
Fluid Recall is an MCP server listed in the public MCP registry as com.fluidrecall/mcp. Agent-native spaced-recall system of record. Deterministic dueAt via remote MCP for Muse/any agent. This page covers its hosted endpoint (https://fluidrecall.com/mcp).
Is the Fluid Recall MCP server safe to use?
Fluid Recall scores 64 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Fluid Recall MCP server expose?
Fluid Recall exposes 39 tools: createAccount, bootstrapAccount, startSession, nextDue, gradeAndNext, and 34 more. Their descriptions and schemas cost roughly 4,864 tokens of context every time the server is loaded.
Does the Fluid Recall MCP server require authentication?
No. We connected to Fluid Recall without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Fluid Recall MCP server still maintained?
Fluid Recall is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.