PaywallCompass MCP server

• Registry namecom.paywallcompass/siteverified in the MCP registry

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

• Stateanswerschecked 2026-10-19
• Tools10
• Server calls itselfPaywallCompass (paywallcompass.com)
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 929 ms.

• Answeredmeasuring1 of the 7 daily checks it takes to print a share
• Median first answer1143 ms
• Space in an agent's context≈ 1,217 tokensthe definitions of all its tools (10), which an agent carries on every turn
• Tool definitionsB · 75 of 100

• Parameters without a description: in 5 of 10
• Not saying whether it only reads or can destroy: 10 of 10

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.

• dataset_columns

  The columns, which of them are numeric, the row count and the provenance banner of the PaywallCompass dataset. Call this first to learn the schema.

• dataset_search

  Rows of the PaywallCompass dataset whose cells contain the query (case-insensitive), up to 50.

• dataset_row

  The rows of the PaywallCompass dataset where a column equals a value exactly (case-insensitive).

• dataset_compare

  The rows of the PaywallCompass dataset whose column is any of the given values, in the order given — for "X vs Y" questions.

• dataset_stats

  count, min, max, mean, median and sum of a numeric column of the PaywallCompass dataset (grouping commas and currency are handled; non-numeric rows are excluded and counted).

• dataset_top

  The highest (or lowest) rows of the PaywallCompass dataset by a numeric column — "which is the most/least X".

• dataset_provenance

  The source, the date it was computed, the licence and the citation for the PaywallCompass dataset. Read this to attribute a figure correctly.

• enquiry_describe

  Read first. States plainly what submit_enquiry does on PaywallCompass: it starts an enquiry with human providers who quote directly. Nothing is bought, ordered or paid; no quote is guaranteed; it is free. Also returns who receives the…

• enquiry_fields

  Every field of the PaywallCompass enquiry: key, label, type, whether required, help text and the allowed options where there are any. Pass answers to submit_enquiry keyed by field key.

• submit_enquiry

  Submits an enquiry to PaywallCompass — NOT a purchase, NOT a guaranteed quote. Step 1: call with the answers (keyed by field key from enquiry_fields) and consent=true; it validates and returns a summary, the consent line and a…