Idiolect

Load a writing-voice profile, then draft, rewrite and score prose.

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What the Idiolect connector does

Idiolect AI is a writing-voice personalisation layer, and its MCP server carries that voice into Claude, ChatGPT or any MCP client. The connector loads a profile built from writing you supplied, drafts and rewrites prose to match it, and scores the result on a similarity metric. Sign-in is OAuth 2.1, with no application scopes offered.

Verified connector

Listed by Anthropic as a partner connector in its Connectors Directory.

Connection checked by Agentman on .

Anthropic states this reflects the level of review a connector received, not a security audit.

Idiolect tools (10)

Tool names from Anthropic's directory listing. This server requires sign-in, so we could not read tool descriptions or parameter schemas.

Limits

  • Anthropic's directory under-lists this connector by six tools, and the omitted six contain all four writes. Audit the vendor's connector documentation, not the directory entry, before deciding what this server can do.
  • Idiolect's own enumerations disagree. Four sources give four, six, six and ten. The published local-server source gives five and two depending on mode, against documentation describing that package as a six-tool surface. Every count on this page names the source it came from.
  • No OAuth scope of any kind exists. Neither the resource descriptor nor the authorization server declares scopes_supported, so connecting grants whatever the server implements, now and as it grows. There is no read-only credential.
  • We could not read the remote server's tool schemas or safety annotations. The endpoint returned 401 to an anonymous request. Parameter detail on this page comes from Idiolect's connector documentation and annotations come from its published local-server source — a different deployment, and not evidence about the remote one.
  • A copy of your writing is retained for up to 12 months. Pseudonymized, opt-out in Settings, partially human-reviewed, and explicitly covering writing sent from connected AI assistants. The directory description's "Your writing samples stay private" is true about public exposure and does not describe this retention.
  • Your prose reaches third-party processors in the United States, including OpenAI for generation and Modal for scoring. Do not route confidential material through the connector on the assumption that it stays with Idiolect.
  • The free beta is a switch, not a design. Idiolect documents a complete dormant credits contract with purchase_required and accounting_unavailable error states and says enforcement is disabled. The generation tools carry no idempotency key, unlike create_my_voice.
  • get_credit_status is absent from the directory listing, so an agent configured from it has generation tools and no accounting tool. This is harmless only while the unit cost is zero.
  • Rate limits are 30 calls per five minutes for writing and scoring.
  • Voice Match is not a detector and not authorship proof. Idiolect states this on its methodology page and in its terms. Short fragments, genre shift and too few samples distort the score, and it is withheld entirely below roughly 600 characters across four pieces.
  • The directory description mentions a Pro tier that the current docs do not. Anthropic's entry says "Pro unlocks full ghostwriting"; Idiolect's connector documentation says all 10 tools are free during beta, and its terms refer only to "legacy" Pro subscriptions. Treat the directory copy as stale.
  • The connector's usefulness depends on the model honouring an instruction. Idiolect's server ships MCP instructions telling the assistant to load your voice before writing. That is a request, not an enforcement, and no tool verifies the model complied.

Frequently asked questions

How many tools does the Idiolect MCP server actually have?

Ten, according to Idiolect's own connector documentation, which states plainly that all 10 tools are free during beta. Anthropic's directory lists only four. Idiolect publishes three further enumerations that disagree with both, naming four, six and six tools respectively, so the count you see depends entirely on which page you read.

Which Idiolect tools does Anthropic's directory not list?

Six, and they are the consequential ones. The directory omits create_my_voice, approve_voice_evidence, record_voice_feedback, select_onboarding_method, get_idiolect_state and get_credit_status. Every tool that writes something durable to your Idiolect account is in that omitted set, while all four listed tools read a profile or process text in place.

Can the Idiolect connector post, email or publish anything?

No. Every tool returns text to the calling assistant and nothing else. draft_in_voice takes a format parameter accepting values like linkedin, x_post and newsletter, but that shapes the prose only. Source-reading the published server confirms all outbound requests go to Idiolect's own API, with no social, email or webhook destination anywhere in the dispatch path.

What OAuth permissions does the Idiolect MCP server request?

None that narrow anything. Idiolect's RFC 9728 resource descriptor declares no scopes_supported field at all, and its Scalekit authorization server metadata declares none either. Consent is therefore all-or-nothing: no grant separates loading your voice card from creating a profile that stores writing you supplied.

Does the Idiolect connector store the writing I send through it?

Some of it, and for longer than the connector transport suggests. Idiolect's privacy policy keeps a pseudonymized evaluation copy of your writing for up to 12 months, explicitly covering connected AI assistants, and says some of it is reviewed by their team. You can switch this off in Settings, which also removes entries already held.

Does calling Idiolect draft_in_voice or rewrite_in_voice cost credits?

Not during the free beta. Idiolect's terms state that drafts and rewrites consume neither starter nor purchased credits, and its documented get_credit_status response returns a unitCost of zero with the balance flagged as a preview. That accounting tool is not among the four Anthropic lists, so a directory-configured agent cannot check spend.

Why does Idiolect return a draft but no Voice Match score?

There is not enough of your saved writing to score against. Idiolect's troubleshooting states the threshold as roughly 600 characters across four separate pieces, and that it withholds the number rather than showing one that does not mean anything. You still receive the draft; add more samples to your Voice Profile to get the score.

Are there rate limits on the Idiolect MCP server?

Yes. Idiolect's connector troubleshooting states that writing and scoring are capped at 30 calls every five minutes, and that the limit clears on its own with no action needed. Idiolect's terms separately forbid attempting to disrupt or abuse the Service or its rate limits, so treat the cap as a contractual boundary rather than a soft target.

Can I use Idiolect with Codex or a local MCP client?

Yes, through a separate npm package rather than the remote connector. Idiolect documents codex mcp add with the idiolect-mcp package and a personal API key. That local server is a different and smaller surface: its published source registers five tools in API-key mode and two in the older slug mode, not the remote server's ten.

Sources

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