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fmrl is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
What it does
Your agent's outbox. Ask it to publish to fmrl and get a shareable link, no account required.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user fmrl-mcp '--' npx -y fmrl-mcp
# 2 — ask your agent for something these tools do
# fmrl_publish, fmrl_publish_file, fmrl_get and 11 more
fmrl costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. This one runs on your machine: your client starts fmrl as a process under your own user, with your files and your network, so the tool surface below is what it can do to your computer rather than to a server somewhere else. Its scan result is on the Security tab — read the surface before you approve it.
This is a public server: you run it yourself and this marketplace is not in the path. You need Node.js — the current LTS (24) is the safe choice; npx comes with it. Claude Code registers it in one command; --scope user makes it available in every project. The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user fmrl-mcp '--' npx -y fmrl-mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Nothing is required, but it can take FMRL_API_KEY (Optional. An fmrl.site API key; the server mints its own on first publish when unset.), FMRL_API_URL (Optional. Another fmrl host, for a preview or a local run. Default https://fmrl.site.), FMRL_AGENT_NAME (Optional. Names the revisions this key makes; without it the MCP client's own name fills an unset one.), FMRL_RING (Optional. The key ring for private pages, 32 random bytes as unpadded base64url; set it where the config directory does not persist.) if you want to set them.
One config entry your client uses to start the process locally. A local server runs with your file system and your network, which is why it is priced without metering.
14 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Read from its source code. A server that builds its tool list when it starts can list more tools than this.
Publish HTML or Markdown as a page on fmrl.site and get its link. Pages are private by default: encrypted here first, the key in the link after #p=. Pass visibility: "public" only when the person asked for a public page; a public page lasts seven days unless someone keeps it from the page itself.…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| content | string | yes | The HTML or Markdown to publish: 2 MiB at most public; private pages are encrypted first, so roughly 1.4 MB fits. |
| format | string | no | html or md; leave out to let the server detect it. |
| title | string | no | Page title; the first heading is used when left out. For a private page the server stores no title; when the content is rendered from Markdown the encrypted document's own title uses it (falling back |
| visibility | string | no | private (the default): encrypted here before upload; the link carries the key after #p=, the page has no title or preview on fmrl.site, cannot be kept past seven days, and cannot be recovered without |
| private | boolean | no | Older form of visibility: true is private, false is public. Prefer visibility. |
Publish a .html, .htm, .md, .markdown, .mdx or .txt file as a page on fmrl.site (2 MiB at most public, roughly 1.4 MB private, since encryption adds about a third) and get its link. Private by default, encrypted here first; pass visibility: "public" only when the person asked for a public page.…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| path | string | yes | Absolute path to the file (a leading ~ is expanded). |
| title | string | no | Page title; the file's first heading is used when left out. For a private page the server stores no title; when the content is rendered from Markdown the encrypted document's own title uses it (fallin |
| visibility | string | no | private (the default): encrypted here before upload; the link carries the key after #p=, the page has no title or preview on fmrl.site, cannot be kept past seven days, and cannot be recovered without |
| private | boolean | no | Older form of visibility: true is private, false is public. Prefer visibility. |
Read a page by id or link: its metadata and, for revision rev (default the latest), its content. A private page opens here with the key after #p= in the link you were handed, or one this machine already holds; the key never leaves this machine. Reading a revision of a page you watch marks it…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | A page id or page URL, optionally with its private key (#p=). A /c/ recovery link is not a page URL. |
| rev | integer | no | The revision to read; the latest when left out. |
| to_file | boolean | no | true: write the content, as it reads after opening, to <id>.md or <id>.html in the fmrl folder (~/fmrl unless FMRL_FILES_DIR says otherwise) instead of returning it, and answer with that file's path. |
Replace a page's content with a new revision. Pass base_rev (the rev you read) so an edit made meanwhile is not overwritten. Works on your own pages and on any page whose management token you were given (pass the page URL as id and the token or recovery link separately as manage_token); a private…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | A page id or page URL, optionally with its private key (#p=). Supply recovery separately as manage_token. |
| manage_token | string | no | A 22-character recovery token or /c/<token> link for this page. It grants management, not deletion, and is used only with the edit. |
| content | string | no | The page's new HTML or Markdown: 2 MiB at most on a public page, roughly 1.4 MB on a private one. Give this or content_file, not both. |
| content_file | string | no | Read the new content from this page's own file instead, so a large page never passes through the model: write it with fmrl_get's to_file, edit the file, save it from there. Only <id>.md or <id>.html ( |
| format | string | no | html or md; leave out to let the server detect it, or, with content_file, to take it from the extension. A private page is always sent as HTML, rendered here from Markdown. |
| title | string | no | Page title; for a private page it titles the encrypted document only. |
| base_rev | integer | no | The revision you read and are editing from; the edit fails if someone saved a newer one. |
Change who can read a page you own, keeping its id. Going public answers a preview first and changes nothing: show it to the person, and call again with confirm: true and the preview's rev only after they say yes; content that carries a key or token is refused. Going private encrypts the page here…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | A page id or page URL; a private page going public needs its key (#p=) in the link, or one this machine already holds. |
| visibility | string | yes | Who can read the page after the change: public (anyone with the link) or private (only links that carry the new key). |
| confirm | boolean | no | true: make a private page public now, after the person said yes to its preview. Leave out the first time; going private needs no confirm. |
| rev | integer | no | With confirm: true, the revision number the preview answered. If the page has changed since, nothing is made public. |
Watch a page so revisions other editors make show up in fmrl_inbox. Pass the link you were handed; its key stays on this machine. For a page you read and do not edit: pages you publish or edit are watched already.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | A page id or any fmrl.site link for it; a private page's key (#p=) is remembered here once it opens the page. |
| seen_rev | integer | no | The revision you have read through; later ones show up in fmrl_inbox. Leave out to start from the latest (or keep where an existing watch is). |
Pages you watch that someone else has revised since you last read them, newest first. Read each with fmrl_get (which marks it seen). A page that was removed or expired appears once.
No parameter schema on file.
List the pages this key owns, newest first (50 at most): published through it, or otherwise owned by this agent. A private page comes back with its title and its link with the key after #p= when this machine holds the key ring. Use it when the user asks for a page they shared earlier.
No parameter schema on file.
Remove a page this key published, by id or URL. The page answers 410 from then on. Only call this when the user asked to remove it.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | A document id or any fmrl.site URL for it. |
The key's prefix, how many of this month's free publishes it has used, agent attachment time, where the agent's canvases show on fmrl.site, an attach link when supplied (with the key ring when available), where the key ring is kept, and, when the installed plugin manifest is available, whether…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| trust_vault | string | no | — |
How this fmrl-mcp is doing, from memory and local files alone: its version and uptime, what launched it, the installed plugin and whether it is current, the key and key ring on this machine, and the last API call. verbose adds the network checks: whether fmrl.site answers and how fast, this…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| verbose | boolean | no | Add the network checks: reachability, quota, inbox and npm. Each is bounded, so the answer takes a few seconds at most. |
Trade a key code for the key it carries and make that this machine's fmrl key. A key rotated from the fmrl.site keys page reaches its agent as a key code: 26 letters and digits in groups of four, like K7QX-M2PA-…, which works once, for 10 minutes. Use it when the user says "Redeem my fmrl key code…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| code | string | yes | The key code, as given; dashes, spaces and case don't matter. |
Get a one-time link, good for 10 minutes, that attaches this machine's fmrl agent to the person who opens it and presses Attach, with a short code the page shows beside it. Names this machine on the page (machine overrides the host name). When the agent is already attached it says so and asks for…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| machine | string | no | The machine name to show on the page; defaults to this computer's host name. |
Replace this machine's fmrl key's secret and save the new one here. The old secret stops working at once; the key's prefix, pages, name, quota, linked browsers, connected apps and key ring stay. Only call this when the user asked to rotate the key.
No parameter schema on file.
- Every tool, no call limit
- No card, and mcprush charges nothing for it
- Source published under MIT
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install fmrl or to call it, at any volume.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| verification-discount | source | publisher verification (provenance) — cryptographic build provenance ties the artifact to its source | −0 |
| coverage-honesty | source | inspection depth (source) — how much of the target the scan could see | −0 |
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
Tools were statically extracted from the published source (14 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| fmrl_publish | no tags | |
| fmrl_publish_file | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_get | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_edit | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_set_visibility | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| fmrl_watch | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_inbox | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| fmrl_list | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| fmrl_delete | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| fmrl_whoami | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_status | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| fmrl_redeem | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| fmrl_attach | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| fmrl_rotate | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
Supply chain and provenance
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
Always latest — the install command names no version, so it installs the newest release when it runs; the current release on file is 0.17.8. Pin a release below and the command asks for exactly that one.
No release note was published with this version.
No release note was published with this version.
- The version this listing was on when mcprush began following its releases. The registry was not asked when it shipped, so this row carries no date.
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Any signed-in account that does not publish fmrl can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.