WhichPost MCP server

• Registry nameapp.whichpost/whichpostverified in the MCP registry

The registry name sits under whichpost.app. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-27
• Tools18
• Server calls itselfwhichpost
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-27 the server answered initialize and tools/list without a sign-in. First answer in 101 ms.

• Its tools do every use case we checked: rank creators by the paying customers they brought; compare cost per paying customer across creator posts.
• Checked on 1 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
• What an agent can do with it2 of 2 use cases
• Answeredmeasuring1 of the 7 daily checks it takes to print a share
• Median first answer290 ms
• Space in an agent's context≈ 2,527 tokensthe definitions of all its tools (18), which an agent carries on every turn
• Tool definitionsA · 96 of 100
• Typed results18 of 18 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 4 of 18

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• about_whichpost

  What WhichPost does, who it is for and who it isn't for, what a team gets from a report, and where to start. Public information; needs no sign-in.

• how_it_works

  How WhichPost works in plain language: the three setup steps, the revenue sources it connects to (Stripe, RevenueCat, Superwall), the post platforms it reads (TikTok, Instagram, YouTube Shorts, X), how each creator gets a decision, and…

• get_pricing

  WhichPost's plans and prices in US dollars (Creator Audit, Monitoring, Studio, Agency), what each is for, and current offers. Public information; needs no sign-in.

• get_faq

  Answers to common questions: Stripe key safety, what is read, setup, how a post is credited without a link, accuracy and ranges, what a product needs, promo codes, and what happens when the data isn't enough. Optionally one topic. Public…

• privacy_and_security

  How WhichPost handles data: read-only keys, what is read and kept, no device or viewer tracking, where data is processed, and what a connected assistant can and can never see. Public information; needs no sign-in.

• check_fit

  A quick, fixed questionnaire: from the revenue source, creators per month, new sign-ups or installs a day and a few yes/no answers, it says whether WhichPost is a good fit now, which plan suits, and the next step. The same answers always…

• list_workspaces

  The WhichPost workspace this connection can read. A connection sees one workspace, chosen by the founder when connecting. Returns its name, how many reports it has and a link to the newest one.

• list_campaigns

  Every campaign report in the connected workspace, newest first: when it was made, the posting dates, how many creators, the headline answer and the report link. Use a report_id from here with the other tools to look at an older report.

• get_latest_report

  The headline answer of the newest report, or of the one named by report_id: paying users from creator posts with their likely range, spend, cost per paying user with its range against the founder's target, revenue so far from those paying…

• list_creators

  Each creator in a report: posts, views, spend, paying users with their likely range, cost per paying user with its range, revenue so far from their paying users after refunds with its range, per 1,000 views and as return on spend (when…

• explain_creator

  Why one creator got their decision, in plain language and from the report's own numbers, and what would sharpen it. Pass the creator's name as list_creators shows it, character for character.

• compare_creators

  Two to five creators side by side (paying users, cost per paying user and revenue so far, each with its range, and their decisions), and whether their ranges are far enough apart to tell which one is cheaper yet.

• campaign_health

  What more data would narrow a report's ranges or settle its open calls: creators to test again, free trials still running, posts whose views aren't read yet, a short history before the first post, the report's checks, and the report's own…

• get_sample_report

  A labelled sample report built from simulated data, so anyone can see what WhichPost answers before connecting their own data: paying users with their likely range, cost per paying user, and a decision per creator. Needs no sign-in. The…

• mark_event

  Adds an event to the connected workspace (a launch, press, a newsletter, an ad push, a promotion or something else) for one day or a date range in the workspace's time zone, so sales around it aren't credited to creators in the next…

• list_events

  The launches, press, newsletters, ad pushes, promotions and other events marked in the connected workspace, oldest first, with their dates in the workspace's time zone. Sales around them count as sales without posts.

• data_status

  Which revenue source (Stripe, RevenueCat or Superwall) and post source the connected workspace uses, whether each is working and when it last updated, and how many posts' views are being read. Never keys or credentials.

• refresh_report

  Creates a new report for the connected workspace from its latest data (Stripe or RevenueCat, the creators' posts and marked events), the same as the report button on the website. It takes up to a minute, uses one of the workspace's daily…

• app.whichpost/whichpost-publicanswers, 7 toolsverified in the MCP registry