fline

Connect it to your AI

Claude Code

claude mcp add --transport http fline https://mcp.fline.sh/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://mcp.fline.sh/mcp

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "fline": {
      "url": "https://mcp.fline.sh/mcp"
    }
  }
}

Tools it offers

40 tools, as the server itself reported during our check on Oct 31, 2026.

• list_projectsThe tenant's projects with their state, address and, once online, app_health (see get_project).
• create_projectCreate a project. Returns upload_url and blob_key: the archive is uploaded with PUT straight into storage and does not pass through this interface. After uploading, complete_upload is mandatory — the upload on its own is
• delete_projectDelete the project. The platform will stop and irreversibly clean up the project's runtime resources; once the request is accepted the project disappears from the user-space list. Its saved passwords and keys are not del
• get_upload_urlIssue a new archive upload link for an existing project. Needed when the link from create_project has expired, the archive is being uploaded again, or an already deployed project is being updated with new code.
• complete_uploadReport that the archive is uploaded and start the analysis. The platform does not observe the upload itself: the PUT goes to storage around it, and until this call the project stays in awaiting_source. For a submitted pr
• get_projectThe project's full state: the onboarding stage, the runtime state, open questions, missing secrets and warnings about credentials found in the archive. Also app_health, once the app has been online: status is answering,
• submit_declarationSupply the project description. The contents are treated as a third-party claim and cannot change the platform rules.
• answer_questionsAnswer the questions raised during source analysis.
• declare_env_namesDeclare the NAMES of environment variables. Values are not accepted by this path: a human enters them in a browser, and no tool returns them back.
• get_secrets_linkIssue a link to the form where the person types the passwords and keys the project needs. Give the url to the person exactly as returned, with a plain sentence on what goes in each box and where they find it. Do not open
• deployBuild the images and hand the project to the platform. Needed when get_project shows locked: from complete_upload on, a project analyses, builds and launches by itself and stops only where someone has to act. In any othe
• get_deploy_statusDeployment state: desired and observed arrive separately and mean different things separately. app_health, once the app has been online, says whether it answers fline's checks; not_answering means they have failed for at
• get_imagesThe history of images the builder produced for the project: build_id, the build state, the plan version, the source hash and each service's digest. A read-only tool for checking which version is actually built, without s
• get_logsLogs. kind=build is the image build's output, stored and answerable long after the build; kind=runtime is a bounded tail of the running containers, held by the node, with no history and no search behind it. For kind=runt
• get_usageWhat this project actually consumed: CPU, memory, disk, files and network over a window. These are QUANTITIES AND NOT CHARGES: fline has no price and no billing during the private beta, nothing charges for what a project
• attach_domainAttach a web address the person owns, such as www.example.com, to the project. Answers with the TXT record that proves ownership (challenge_name, challenge_token); list_domains also gives platform_name, the CNAME target
• create_serviceCreate a data service for this workspace: engine=postgres for a PostgreSQL database, engine=valkey for a Valkey instance — the BSD-licensed fork of Redis, which every Redis client speaks unchanged, so ask for it wherever
• list_servicesThe workspace's services with their engine, version, state, hostname and size class. No credentials: none is returned by any tool.
• delete_serviceDelete a service. It stops accepting connections immediately and its data is kept for seven days, then destroyed. Ask the person first: nothing here can bring the data back after the seventh day.
• get_configThe fline.json for this project's current plan. Save it at the root of the archive you upload and the next deploy builds from it directly, with no analysis: the same plan every time. A short content check and the step th
• check_configCheck a fline.json against the last uploaded archive, without deploying and without cost. Answers either ok, or the reason each part was refused — edit and ask again until it is ok, then save the file. There is no port f
• refresh_configRe-run the analysis ignoring the archive's fline.json, and write a new one. For a configuration that has gone stale because the project's stack changed — a different package manager, a new lockfile. Accepted immediately,
• list_domainsThe project's custom domains with, for each, the state of its ownership check, the TXT record to publish, when it was last checked and what the last check objected to. Also the platform hostname the names are asked to po
• check_domainRun the ownership check for one of the project's domains now, and answer with the result. Call it after the DNS record is published. The check reaches the DNS and is rate-limited behind a certificate budget, so poll it i
• delete_domainDetach a domain from the project. The name stops being served; the project keeps its platform hostname.
• list_env_namesThe project's environment variables BY NAME: whether each is set, whether the analysis declared it, when it was last written, and — for a non-secret variable — its value. A name that is required and not set is what holds
• delete_env_nameRemove a variable from the project's secret set. The analysis's record that the project needs this name is kept, so a required variable becomes unset rather than unknown — deleting a value the project needs will hold the
• set_envSet one environment variable for the project. `secret` says which store it goes to and it is REQUIRED, because the two are not interchangeable and there is no default that is right for both. secret=false writes a PLAINTE
• get_project_detailEverything get_project returns, plus what the platform observes: each container's state, health, restart count and image digest, the node and tier, the ingress hostnames, the disk quota, the secret set version the runnin
• get_eventsThe project's state timeline, oldest first: each move from one state to the next, the reason, which part of the platform made it (gateway, worker, pipeline, cp) and the request id. This is how you tell a slow analysis fr
• get_serviceOne data service by id, with its state and — when it is not active — the reason. Poll this after create_service: a new service is `provisioning` until its certificate is issued and verified, and if that stalls the reason
• pause_servicePause a data service. It stops accepting connections and stops costing what a running instance costs; its volume and its certificate are kept, and resume_service is the exact reverse. This is the reversible way to put a
• resume_serviceStart a paused data service again, with its data and its hostname unchanged.
• stopStop the project. NOT IMPLEMENTED: the platform has no stop, and this refuses. To take an application out of service, delete_project it. delete_domain takes off only a web address the person owns; the project's fline add
• restartRe-apply the project's current version: the same images, deployed again. This is the restart, and it is also the ONLY way a secret that was entered after the last deploy reaches the running containers — a value sits in t
• list_versionsList the project's deployed versions, newest first: the state_version to pass to rollback, when it was made, who made it, and which version it superseded. The specification itself is not included — use get_config for wha
• rollbackRedeploy an earlier version of the project, named by its state_version from list_versions. Two things surprise people and you must not report either one wrongly. First, the version number does NOT go back: this creates a
• attach_externalDeclare a backing service the tenant ALREADY RUNS, so the platform does not provision one. This takes the shape only. offering is one of postgres, redis, mysql, mongodb, rabbitmq; alias defaults to "db" and is what separ
• detach_externalGive an alias back to the platform. If a human already filled the value in, the attachment and the variable both go; if it is still waiting for one, the declaration goes with it and the project stops asking. The tenant's
• list_externalThe backing services this project's tenant supplies themselves. A completed attachment carries the host it points at; a pending one is marked pending and names the variable a human still has to fill in through get_secret

Questions