Substack by Cotlet (/mcp/v1/substack)
MCP server · cotlet.dev · found in a public list · checked since 2026-10-24
Live, handshake completed · latest check
Writes, publishes and schedules Substack posts and manages subscribers, Notes and stats.
Our summary of what its own text says it does: automated, not reviewed by a person (placement-ai/6). What this means
Placed in Website, blog and docs content: Write and publish content in CMSs, blogs, help centres and documentation sites.
https://cotlet.dev/mcp/v1/substack MCP endpoint (Streamable HTTP)The name is the registry's label, not ours. Not reviewed by a person. See 24 endpoints from cotlet.dev.
Our checks
An unpaid request daily, from eastern North AmericaLast 2 checks, oldest to newest; room for 28 more
2 passed, 0 failed, 28 not run.
Checked daily. Daily: 5 to 99 payers, and every new service until it has been probed 3 times.
Response times
| Window | Checks | Timeouts | Median | 90th | 95th | 99th | Fastest | Slowest |
|---|---|---|---|---|---|---|---|---|
| 24 hours | 1 | 0 | — | — | — | — | — | — |
| 7 dayssince 2026-10-24 | 2 | 0 | — | — | — | — | — | — |
| 30 dayssince 2026-10-24 | 2 | 0 | — | — | — | — | — | — |
Milliseconds, from eastern North America, timing the whole MCP handshake (initialize to the tools/list answer). Timeouts count at the 10000 ms limit. A dash means too few checks for that figure. As of . Definitions and method.
Details
Tools listed by the server
add_subscribercancel_scheduled_postcotlet_appscotlet_browser_clickcotlet_browser_closecotlet_browser_navigatecotlet_browser_opencotlet_browser_presscotlet_browser_readcotlet_browser_screenshotcotlet_browser_scrollcotlet_browser_selectcotlet_browser_typecotlet_browser_uploadcotlet_get_callcotlet_report_issuecotlet_request_appscotlet_upload_filecotlet_whoamicreate_draftcreate_post_tagcreate_subscriber_tagdelete_commentdelete_postduplicate_postexport_subscribersfollow_userget_audience_insightsget_conversationget_daily_statsget_feedget_postget_post_engagementget_post_statsget_post_trafficget_publication_statsget_unread_countslike_commentlike_postlist_activity+27
- Tools
- 67
- This list since
- 2026-10-25
- First listed to us
- 2026-10-24
- List changes, 90 days
- 1
Names as the server reported them at our latest completed handshake (mcp-handshake/2); a listed tool is not a tested one. Definitions
Access
- Our latest check
- Nothing asked
- Stated
- Credentials needed, by its MCP Registry entry (a secret header)
- Payment model
- not known
- Currency
- not known
"Nothing asked" describes one plain request, not every operation. Statements are claims, not our measurements. Definitions
Interface it declares
- Protocol
- MCP 2025-06-18
- Capabilities
- resourcestools
- Transports
- streamable-http
As its initialize reply stated it at our check on (mcp-handshake/2): a claim, not tested. Definitions
Calls it declares
cotlet_whoamicotlet_apps appcotlet_request_apps apps*cotlet_get_call call_id*cotlet_upload_file name content_typecotlet_report_issue kind* title* description* app tool call_id clientcotlet_browser_open urlcotlet_browser_navigate url*cotlet_browser_readcotlet_browser_screenshotcotlet_browser_scroll direction screens elementcotlet_browser_click element*
From the tool list it returned to our check (request-shape/2). * marks a required parameter; after → the fields it says it returns. What it declares, not that a call works.
Listing
In the capability tree: Business and productivity / Notes and knowledge / Website, blog and docs content (primary); Messaging and communication / Email / Newsletters and campaigns. Placed by three checks by a small AI model: placed, found blind from its tasks, and verified against its own text (placement-ai/6, tree/3) on 2026-10-25. Wrong place? Tell us.
In the directory: meets our listing criteria (listing-criteria/6): ✓ says what it does; ✓ its latest check passed.
Recent probes
| When | Result | Time to headers |
|---|---|---|
cloudflare:EWR |
Live, handshake completed HTTP 200 | 717 ms |
cloudflare:EWR |
Live, handshake completed HTTP 200 | 734 ms |
What these figures do not show
- A passing check means the server completed the MCP handshake with us (initialize, then tools/list, with no credentials; mcp-handshake/2) or asked for credentials first (HTTP 401). It does not show that the server's tools work or what they return. Tool names are as the server listed them.
- Listed in the Official MCP Registry; this data comes from the Official MCP Registry. Its listing's description is not republished.
- Limited evidence: monitored for 1 day (less than 30).
Something wrong here?
Operate this service and want it reviewed, corrected or removed? Email hello@agentservicedirectory.com or use the opt-out page. A wrong place in the tree? Tell us.
Machine-readable: /api/v1/services/cand_1c7b8bc057e52836