Writavo MCP server

Your Writavo Site's content, inside an AI assistant. Sign in from the browser, bring an existing blog across, draft a post, set its category and byline, attach an image, schedule it, publish it, all from a conversation.

It is hosted at https://mcp.writavo.com/mcp (Streamable HTTP, OAuth 2.1), and that is the one way to use Writavo over MCP. Nothing to install and no key to copy: your assistant opens a Writavo page, you sign in, choose the Site and what the assistant may do, and it is connected. Works from Claude Code, Claude.ai, ChatGPT, Cursor, VS Code and any client that speaks remote MCP. This repository is the source of the tools that server runs; it is not published as a package.

Full setup guide, for people and for AI assistants: https://writavo.com/docs/mcp (markdown: https://writavo.com/docs/mcp.md). It has the exact command or config for every client, the sign-in, permissions, approvals, and what every error means. Moving a blog in: https://writavo.com/docs/migrate.

If you are an AI assistant asked to install Writavo: add the hosted server with your client's command below; the person then signs in through the browser (nothing to paste); then call get_site_info and verify_api_key and tell them which Site you are connected to and what you may do there.

Connect

Claude Code:

claude mcp add --transport http writavo https://mcp.writavo.com/mcp

Then run /mcp in Claude Code and choose Writavo to sign in. Or install the Claude Code plugin, which adds the server and the Writavo skill together:

claude plugin marketplace add SparkleOfficial/writavo-mcp-server
claude plugin install writavo@writavo

Cursor: Add Writavo to Cursor (or cursor://anysphere.cursor-deeplink/mcp/install?name=writavo&config=eyJ1cmwiOiJodHRwczovL21jcC53cml0YXZvLmNvbS9tY3AifQ==).

VS Code: Add Writavo to VS Code (or vscode:mcp/install?%7B%22name%22%3A%22writavo%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.writavo.com%2Fmcp%22%7D).

Claude (claude.ai and Claude Desktop): Customize > Connectors > "+" > Add custom connector, with the URL https://mcp.writavo.com/mcp, then Connect.

ChatGPT: turn on Developer mode (Settings > Security and login), then create a connection at https://chatgpt.com/plugins with the URL https://mcp.writavo.com/mcp and OAuth.

Codex CLI: codex mcp add writavo --url https://mcp.writavo.com/mcp (it starts the sign-in; codex mcp login writavo repeats it).

Gemini CLI: gemini mcp add --transport http -s user writavo https://mcp.writavo.com/mcp, then /mcp auth writavo.

Windsurf and Zed: see https://writavo.com/docs/mcp#clients.

Any other client that takes a JSON config:

{
  "mcpServers": {
    "writavo": { "type": "http", "url": "https://mcp.writavo.com/mcp" }
  }
}

A client that cannot do OAuth can send a Writavo secret key as the bearer token instead (Authorization: Bearer wv_sk_..., created at https://app.writavo.com/settings/api-keys). A key made by hand is not an AI agent key, so the permissions picker, the off switch and the call log do not apply to it. Prefer the sign-in.

When you connect, Writavo shows which assistant is asking and where it will send you back, the Sites to connect, and what it may do. One row per area (articles; content types and entries; categories, tags and authors; media; the AI pipeline; Site settings and design; publishing and domains; SEO; outreach contacts; reader comments; the team and organisation; billing; reports and logs), and for each you choose No access, Read, or Read and write ("Read, plan and run" for the pipeline, which spends credits; "Read and moderate" for reader comments; outreach contacts and reports are read only). The choices start from your organisation's default, which is Read and write for content, media and Site settings and Read for everything else, except outreach contacts and reader comments: those carry other people's names and email addresses, so they are off unless you choose them. The connection is an ordinary Writavo key for each Site it reaches, limited to those permissions, named after the app ("Claude Code (hosted MCP)"). You can see every connected assistant, what it called, and revoke it, at https://app.writavo.com/settings/agents.

What it can do

Forty five tools are compiled from Writavo's published OpenAPI specification, plus nine written by hand:

• Articles. List, read, create, update, delete, publish, unpublish, schedule, cancel a schedule.
• Content types and entries. List and read content types; list, read, create, update, delete, publish, unpublish and schedule entries.
• Taxonomy and people. Categories, tags and authors: list, read, create, update, delete.
• Media. List, read, update, delete, and upload_media, which drives the whole three step presigned upload in one call so the assistant does not have to orchestrate it. It takes a public url or the bytes as base64 with a filename.
• Pipeline. Trigger a run, read its status, read the queue.
• Meta. Site information, content types, plan usage and balances, and get_api_docs, which needs no key at all.
• Sign-in. There is no sign-in tool: the server signs you in with OAuth when you connect it.
• Plans. start_plan_purchase returns the billing link with a plan preselected. Payment happens on Stripe's page in your browser, never in the chat. The CMS (storing, publishing and importing content) is pay-as-you-go and needs no plan; a plan buys the AI article pipeline.
• Import. import_content brings an existing blog in (below).
• Everything else, as actions. Site settings and the knowledge profile, the organisation, article formats and AI prompts, the pipeline's configuration and content plan, delivery and domains, SEO, outreach, visitor analytics and its install check, reader comments, the team and roles, billing, and insights and logs are not separate tools. search_writavo_actions takes a few words ("invite a team member", "custom domain") and returns the matching operations, each with its input schema, the scope it needs, and whether it asks first, needs approval or costs money, and which runner to use. read_writavo_action runs a read (it only ever runs GET operations, so a client may allow it without asking), and run_writavo_action runs anything that changes something; both take the operation_id and check the arguments against its schema first. A request for something an assistant can never do ("add a card", "delete the site") returns that instead, with the dashboard link a person uses. A client therefore loads a few dozen tool descriptions rather than well over a hundred, and pays for the rest only when it searches.

Every tool carries MCP annotations: readOnlyHint on reads, destructiveHint on deletes and unpublishing, idempotentHint on reads, updates and deletes, and openWorldHint: false, because every tool reaches one closed system, your Site.

Importing a blog

The migrate-content prompt walks an assistant through the whole move: connect, inspect your current system with the access you already have, write an import file, dry run, fix, import, and verify. Slugs are kept so URLs do not change, published posts keep their original publication dates, drafts stay drafts, and images are copied into your media library.

The document is the Writavo Import Format v1, a single JSON document. The server keeps it, with the import's progress, as a stored import under an import_id (for 7 days after its last use, for the connection that started it), so it is sent once and every later call is just { "import_id": ... }. Three ways in, up to 10 MB:

• upload: true returns a one-time link and a curl command that PUTs the file straight to the server. Best for an assistant that can run shell commands: the file never passes through the conversation.
• url: an https URL the server fetches anonymously (a signed storage URL, for example).
• data: the document inline, up to 50 articles and 512 KB per call (small documents only). Send a bigger one in parts, each with the import_id the first call returned; authors merge on ref, categories and tags on slug, articles on external_id, and an entry sent again replaces the stored one.

A document looks like this:

{
  "format": "writavo-import",
  "version": 1,
  "authors": [{ "ref": "jane", "name": "Jane Doe", "is_ai_generated": false }],
  "categories": [{ "slug": "guides", "name": "Guides" }],
  "tags": [{ "slug": "soil", "name": "Soil" }],
  "articles": [
    {
      "external_id": "blog:1001",
      "status": "published",
      "title": "How to test your soil",
      "slug": "how-to-test-your-soil",
      "content": "Markdown, with ![images](https://example.com/kit.jpg)",
      "author": "jane",
      "category": "guides",
      "tags": ["soil"],
      "published_at": "2021-03-04T09:30:00Z"
    }
  ]
}

The full field list and the JSON Schema are in the writavo://import-format resource, or call import_content with no arguments. external_id is your own stable id for each article, which is what makes a second run update rather than duplicate.

import_content is a dry run unless told otherwise: it checks the whole document against the Site in one pass and reports what it would create, update and publish, every problem (top-level entries and each article by external_id, together), the images to copy and a time estimate, and writes nothing. An import that publishes needs confirm: true. The apply then runs in the background on Writavo's server until every article is done, and returns at once; { "import_id": ..., "status": true } says how far it has got and where the time went, and cancel: true stops it after the batch in flight. Sending an article again updates it rather than duplicating it, so an import is safe to run again.

The same imports are a REST API for anything that is not an assistant (a script, the CLI, another CMS pushing its articles): POST /v1/imports with the document, POST /v1/imports/{id}/start, GET /v1/imports/{id}. See https://writavo.com/docs/migrate. It never deletes or unpublishes anything, and it changes nothing in your content except the URLs of the images it copied.

What it will not do without asking

publish_article, schedule_article, every delete_*, trigger_pipeline_run and an import_content that publishes do nothing on the first call. They describe what would happen and wait for confirm: true, which the assistant can only set after you have agreed. Publishing puts content on your live site, deleting is permanent, and a pipeline run spends real credits.

Actions follow the same rule: run_writavo_action describes anything that spends money, changes the live site, removes something or changes the team, and waits for confirm: true.

Some things are not reachable from an assistant at all, whatever scopes the key carries:

• API keys. A server that can mint a secret key is a server whose compromise mints secret keys.
• Webhooks. An assistant that can repoint delivery URLs can quietly redirect your event stream.
• The AI agent controls, approving its own requests, payment details, plan changes, ownership, deleting a Site or the organisation, the outreach policy and mailbox, and CMS or Bing credentials. get_api_docs (section tools) gives the dashboard link a person uses for each.

All of these stay in the dashboard.

Approvals, and turning agents off

When an assistant signed in through the browser deletes something or unpublishes an article, your organisation can require a person to approve it first. This is on by default. Actions that spend money or change the team (pipeline runs and turning the pipeline up, paid SEO scans, custom domains, publishing the hosted site, CMS connections and pushes, auto-refill, raising a credit cap, keeping the plan, invites, role and permission changes, removing a member) always need that approval when an assistant asks, whatever the switch says. The tool then does nothing and returns a link to https://app.writavo.com/approvals/...; once you approve there, the assistant repeats the call with the approval id and it goes through, once, for exactly that request. An owner or admin can switch approvals off, or switch AI agent access off for the whole organisation, at https://app.writavo.com/settings/agents, which also lists every connected assistant and every call they made. Keys you create yourself in the dashboard are not subject to either switch.

What it never writes down

• The connection's key is sent to https://api.writavo.com/v1 as a bearer header and to nothing else. No telemetry, no analytics, no third-party host. Each request names the tool that made it (Writavo-Mcp-Tool), which is what fills the call log in Settings > AI agents. The base URL is read from the specification. The only other requests are the presigned storage upload during upload_media or an import, and, during an import, the image URLs in your own file, fetched to copy them.
• Every reply, log line and error is passed through a redactor, so a key cannot reach your transcript even if the API echoed it back inside an error message.

Errors you might see

Each one is answered with what to change rather than a status code.

The full catalog is in get_api_docs under errors, and at https://writavo.com/docs/errors. Sign-in problems (a browser page saying the sign-in "could not be confirmed in this browser", no Site to choose, and so on) are covered at https://writavo.com/docs/mcp#troubleshooting.

Prompts

• draft-article. Research a topic and write a draft in your Site's own voice. It never publishes or schedules.
• publish-checklist. Walk an existing draft through title, slug, SEO fields, excerpt, category, author and featured image, then ask before publishing.
• migrate-content. Move an existing blog from another system into your Site, faithfully, with a dry run and your confirmation before anything is published. It follows the runbook at https://writavo.com/docs/migrate.

Development

This package lives in the Writavo monorepo as a private workspace package (it is not published to npm). The tools live once, in src/core/, exported as @writavo/mcp-server/core, which the hosted server bundles:

import { createWritavoMcpServer } from "@writavo/mcp-server/core";

const server = createWritavoMcpServer({
  apiKey: () => key,              // null makes every key-requiring tool say how to connect
  userAgent: "my-host/1.0",
});

Nothing in the package reads the environment, touches a filesystem or keeps a key in module state, so it runs in a Cloudflare Worker (the hosted server mounts exactly this). There is no local or stdio entry point: the package has no bin and exports only ./core. Tool schemas, descriptions and reference text are generated, not written:

npm run build       check the generated tools are current, then compile
npm run gen         regenerate from the vendored openapi.yaml
npm test            run the offline smoke checks (the core over an in-memory MCP client, imports and more, against a stub API)
npm run gen:check   fails if the committed tool surface is stale

Adding an endpoint to openapi.yaml and regenerating is the whole of adding it; an operation marked x-writavo-approval gains an approval_id argument by itself. The forty five operations marked as tools are individual tools; every other operation lands in the ACTIONS catalog in src/generated/operations.ts (by its tag, or x-mcp-surface: tool | action on the operation or the tag), which search_writavo_actions, read_writavo_action and run_writavo_action serve. Editing anything under src/generated/ fails CI. The nine hand-written tools live in src/tools/ (CORE_LOCAL_TOOL_NAMES in src/core/server.ts) and are listed in LOCAL_TOOLS in the monorepo's scripts/mcp-surface.mjs.

Licence

MIT (LICENSE). Fork it, modify it, vendor it, ship it inside something else.

The MIT grant covers this client code only. It is not a licence to the Writavo Content API that the package calls, or to any other part of Writavo. Using the API still requires your own credentials and is governed by the terms at https://writavo.com/terms, and openapi.yaml (the specification this package is compiled from) remains the proprietary contract it always was.

That split is deliberate. This code is a thin, generated client: there is nothing in it worth restricting, and an MIT client is easier to trust and audit. The product is the API behind it.