Is classmarker-mcp live?

Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.

What tools does classmarker-mcp have?

15 tools: classmarker_get_question, classmarker_add_access_codes, classmarker_create_parent_category, classmarker_update_parent_category, classmarker_create_category, classmarker_update_category, classmarker_list_groups_links_exams, classmarker_recent_group_results, ….

Is classmarker-mcp safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

_ registry / mcp streamable-http · checked 1h ago

classmarker-mcp

https://classmarker.usefulapi.io

Registry code: 60322f34a2607cb1

api record

Tools for ClassMarker, hosted by usefulapi.io. Read-only tools never change data; ask the user before a tool that creates, changes or deletes ClassMarker data. Free plan: 100 tool calls per month. Run classmarker_usage_status to see the calls used this month. If the user asks for something none of these tools can do, tell the user and, with their OK, run classmarker_request_feature to record the request. Pro (unlimited calls, $9/month or $90/year): when the user wants more calls or reaches the limit, run classmarker_upgrade; it returns a Stripe Checkout link for the user to open.…

endpoint: https://classmarker.usefulapi.io/mcp
protocol: streamable-http ·2025-06-18
authentication: none observed
public key: none — nobody has proven they own this listing · is it yours? claim it
karma: 0 · newcomer

_ is it live, free and safe measured by this hub

Is classmarker-mcp live?: Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.
Is classmarker-mcp free to use?: Not measured yet.
What tools does classmarker-mcp have?: 15 tools: classmarker_get_question, classmarker_add_access_codes, classmarker_create_parent_category, classmarker_update_parent_category, classmarker_create_category, classmarker_update_category, classmarker_list_groups_links_exams, classmarker_recent_group_results, ….
Is classmarker-mcp safe to connect?: The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

reachable

live

uptime, 30 days

100%

90 days 100%· all time 100%

latency

408ms

last good check

priced tools

of 15 tools

_ answered our checks, 90 days 1 checks · signed record

2026-10-11 22:38 unknown → live

_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts

through this hub

calls served

successful

paid through this hub

0 USDC

what callers paid

_ what it can do 15 tools

15 never probed 0 of 15 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

classmarker_get_question unknown never probed

Get one question-bank question by id (ids from classmarker_list_questions). Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/questions/{question_id}.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "question_id"
  ],
  "properties": {
    "question_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The question id.",
      "exclusiveMinimum": 0
    }
  }
}

arguments 15 lines

classmarker_add_access_codes unknown never probed

WRITE: add access codes (1-100 per call, up to 255 characters each; a list holds at most 20,000) to a link's access-code list, so those people can start the exam. The access_list_id comes from classmarker_list_groups_links_exams (links[].access_list_id). Only adds; removing codes is not offered. Does not count against the 30 requests per hour limit. API: POST /v1/accesslists/{access_list_id}.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "access_list_id",
    "codes"
  ],
  "properties": {
    "codes": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 255,
        "minLength": 1
      },
      "maxItems": 100,
      "minItems": 1,
      "description": "1-100 access codes to add."
    },
    "access_list_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The access list id (links[].access_list_id).",
      "exclusiveMinimum": 0
    }
  }
}

arguments 27 lines

classmarker_create_parent_category unknown never probed

WRITE: create a new top-level question category. Returns its parent_category_id. Counts as one of ClassMarker's 30 requests per hour per API key. API: POST /v1/categories/parent_category.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "parent_category_name"
  ],
  "properties": {
    "parent_category_name": {
      "type": "string",
      "maxLength": 255,
      "minLength": 1,
      "description": "Name of the new parent category."
    }
  }
}

arguments 15 lines

classmarker_update_parent_category unknown never probed

WRITE: rename an existing parent category (overwrites its name). Counts as one of ClassMarker's 30 requests per hour per API key. API: PUT /v1/categories/parent_category/{parent_category_id}.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "parent_category_id",
    "parent_category_name"
  ],
  "properties": {
    "parent_category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The parent category id (from classmarker_list_categories).",
      "exclusiveMinimum": 0
    },
    "parent_category_name": {
      "type": "string",
      "maxLength": 255,
      "minLength": 1,
      "description": "The new name."
    }
  }
}

arguments 22 lines

classmarker_create_category unknown never probed

WRITE: create a question category under a parent category. Returns its category_id. Counts as one of ClassMarker's 30 requests per hour per API key. API: POST /v1/categories/category.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "category_name",
    "parent_category_id"
  ],
  "properties": {
    "category_name": {
      "type": "string",
      "maxLength": 255,
      "minLength": 1,
      "description": "Name of the new category."
    },
    "parent_category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The parent category id (from classmarker_list_categories).",
      "exclusiveMinimum": 0
    }
  }
}

arguments 22 lines

classmarker_update_category unknown never probed

WRITE: rename a category and/or move it to another parent (overwrites both fields: send the name and parent_category_id you want it to have). Counts as one of ClassMarker's 30 requests per hour per API key. API: PUT /v1/categories/category/{category_id}.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "category_id",
    "category_name",
    "parent_category_id"
  ],
  "properties": {
    "category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The category id (from classmarker_list_categories).",
      "exclusiveMinimum": 0
    },
    "category_name": {
      "type": "string",
      "maxLength": 255,
      "minLength": 1,
      "description": "The category's name (new or unchanged)."
    },
    "parent_category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The parent category id (new or unchanged).",
      "exclusiveMinimum": 0
    }
  }
}

arguments 29 lines

classmarker_list_groups_links_exams unknown never probed
List the groups, links and exams (tests) this API key can access, with the ids the other tools need (group_id, link_id, link_url_id, test_id, and access_list_id for links with an access-code list). Good first call. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1.json.

mcp-tool
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": {} }
arguments 5 lines

classmarker_recent_group_results unknown never probed

Recent finished test results taken in the key's groups (all groups, all exams), oldest first, PAGED by finish time: test-taker name, email, score, percentage, pass/fail, timing, certificate. Contains personal data: use small pages. Max look-back 3 months. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/groups/recent_results.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1,
      "description": "Results per request, 1-200 (default 25; ClassMarker's own default is 200)."
    },
    "include_monitor_events": {
      "type": "boolean",
      "description": "Include each result's detailed monitor_events.events list (default false: only the counts)."
    },
    "finished_after_timestamp": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "UNIX time in SECONDS: only results finished after this are returned (oldest first). Default: 14 days ago. Maximum look-back is 3 months. To page, pass next_finished_after_timestamp from the previous reply.",
      "exclusiveMinimum": 0
    }
  }
}

arguments 22 lines

classmarker_recent_link_results unknown never probed

Recent finished test results taken through the key's links (all links, all exams), oldest first, PAGED by finish time: test-taker name, email, score, pass/fail, timing, access code, extra tracking fields, IP address, certificate. Contains personal data: use small pages. Max look-back 3 months. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/links/recent_results.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1,
      "description": "Results per request, 1-200 (default 25; ClassMarker's own default is 200)."
    },
    "include_monitor_events": {
      "type": "boolean",
      "description": "Include each result's detailed monitor_events.events list (default false: only the counts)."
    },
    "finished_after_timestamp": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "UNIX time in SECONDS: only results finished after this are returned (oldest first). Default: 14 days ago. Maximum look-back is 3 months. To page, pass next_finished_after_timestamp from the previous reply.",
      "exclusiveMinimum": 0
    }
  }
}

arguments 22 lines

classmarker_recent_group_exam_results unknown never probed

Recent finished results for ONE exam in ONE group (ids from classmarker_list_groups_links_exams), oldest first, PAGED by finish time. Contains personal data: use small pages. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/groups/{group_id}/tests/{test_id}/recent_results.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "group_id",
    "test_id"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1,
      "description": "Results per request, 1-200 (default 25; ClassMarker's own default is 200)."
    },
    "test_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The exam (test) id.",
      "exclusiveMinimum": 0
    },
    "group_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The group id.",
      "exclusiveMinimum": 0
    },
    "include_monitor_events": {
      "type": "boolean",
      "description": "Include each result's detailed monitor_events.events list (default false: only the counts)."
    },
    "finished_after_timestamp": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "UNIX time in SECONDS: only results finished after this are returned (oldest first). Default: 14 days ago. Maximum look-back is 3 months. To page, pass next_finished_after_timestamp from the previous reply.",
      "exclusiveMinimum": 0
    }
  }
}

arguments 38 lines

classmarker_recent_link_exam_results unknown never probed

Recent finished results for the exam of ONE link (ids from classmarker_list_groups_links_exams), oldest first, PAGED by finish time. Contains personal data: use small pages. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/links/{link_id}/tests/{test_id}/recent_results.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "link_id",
    "test_id"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1,
      "description": "Results per request, 1-200 (default 25; ClassMarker's own default is 200)."
    },
    "link_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The link id.",
      "exclusiveMinimum": 0
    },
    "test_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The exam (test) id.",
      "exclusiveMinimum": 0
    },
    "include_monitor_events": {
      "type": "boolean",
      "description": "Include each result's detailed monitor_events.events list (default false: only the counts)."
    },
    "finished_after_timestamp": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "UNIX time in SECONDS: only results finished after this are returned (oldest first). Default: 14 days ago. Maximum look-back is 3 months. To page, pass next_finished_after_timestamp from the previous reply.",
      "exclusiveMinimum": 0
    }
  }
}

arguments 38 lines

classmarker_list_categories unknown never probed
List the question-bank categories with their parent categories and ids (needed for creating and updating questions). Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/categories.json.

mcp-tool
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": {} }
arguments 5 lines
classmarker_list_questions unknown never probed
List the questions of the question bank, 200 per page (page 1, 2, ...): question text, type, category, points, options, correct options, status. A full page means more may follow, so ask for the next page. Counts as one of ClassMarker's 30 requests per hour per API key. API: GET /v1/questions.json?page=N.

mcp-tool
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "page": { "type": "integer", "maximum": 10000, "minimum": 1, "description": "Page number, 1-based (default 1)." } } }
arguments 12 lines

classmarker_create_question unknown never probed

WRITE: add a new question to the question bank. Only multiplechoice, multipleresponse, truefalse and essay can be created. Returns the new question_id. For truefalse, give only correct_options ["A"] (True) or ["B"] (False). Counts as one of ClassMarker's 30 requests per hour per API key. API: POST /v1/questions.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "question_type",
    "question"
  ],
  "properties": {
    "points": {
      "type": "number",
      "maximum": 1000,
      "minimum": 0,
      "description": "Points for a correct answer (for an essay: the maximum score)."
    },
    "options": {
      "type": "object",
      "description": "Answer options keyed by letter A-J (up to 10), e.g. {\"A\": \"Apply oil\", \"B\": \"Soak in water\"}. Needed for multiplechoice and multipleresponse; not allowed for truefalse and essay.",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string",
        "maxLength": 5000,
        "minLength": 1
      }
    },
    "question": {
      "type": "string",
      "maxLength": 10000,
      "minLength": 1,
      "description": "The question text."
    },
    "category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "Category id (from classmarker_list_categories).",
      "exclusiveMinimum": 0
    },
    "grade_style": {
      "enum": [
        "partial_with_deduction",
        "partial_without_deduction",
        "off"
      ],
      "type": "string",
      "description": "multipleresponse only: partial credit with or without deduction, or off (all-or-nothing)."
    },
    "question_type": {
      "enum": [
        "multiplechoice",
        "multipleresponse",
        "truefalse",
        "essay"
      ],
      "type": "string",
      "description": "multiplechoice (one correct option), multipleresponse (one or more), truefalse, or essay (graded by hand). Free text, grammar and matching cannot be written."
    },
    "random_answers": {
      "type": "boolean",
      "description": "Shuffle the order of the options for each test-taker (multiplechoice / multipleresponse)."
    },
    "correct_options": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Letters of the correct options, e.g. [\"C\"]. multiplechoice: exactly one; multipleresponse: one or more; truefalse: [\"A\"] (True) or [\"B\"] (False); not allowed for essay."
    },
    "correct_feedback": {
      "type": "string",
      "maxLength": 5000,
      "description": "Feedback shown for a correct answer."
    },
    "incorrect_feedback": {
      "type": "string",
      "maxLength": 5000,
      "description": "Feedback shown for an incorrect answer."
    }
  }
}

arguments 80 lines

classmarker_update_question unknown never probed

WRITE (overwrites): replace an existing question-bank question. Send the COMPLETE question (type, text, options, correct options, points, feedback), not only the changed fields; read it first with classmarker_get_question. Only multiplechoice, multipleresponse, truefalse and essay questions can be updated. Counts as one of ClassMarker's 30 requests per hour per API key. API: PUT /v1/questions/{question_id}.json.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "question_id",
    "question_type",
    "question"
  ],
  "properties": {
    "points": {
      "type": "number",
      "maximum": 1000,
      "minimum": 0,
      "description": "Points for a correct answer (for an essay: the maximum score)."
    },
    "options": {
      "type": "object",
      "description": "Answer options keyed by letter A-J (up to 10), e.g. {\"A\": \"Apply oil\", \"B\": \"Soak in water\"}. Needed for multiplechoice and multipleresponse; not allowed for truefalse and essay.",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string",
        "maxLength": 5000,
        "minLength": 1
      }
    },
    "question": {
      "type": "string",
      "maxLength": 10000,
      "minLength": 1,
      "description": "The question text."
    },
    "category_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "Category id (from classmarker_list_categories).",
      "exclusiveMinimum": 0
    },
    "grade_style": {
      "enum": [
        "partial_with_deduction",
        "partial_without_deduction",
        "off"
      ],
      "type": "string",
      "description": "multipleresponse only: partial credit with or without deduction, or off (all-or-nothing)."
    },
    "question_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "The question id (from classmarker_list_questions).",
      "exclusiveMinimum": 0
    },
    "question_type": {
      "enum": [
        "multiplechoice",
        "multipleresponse",
        "truefalse",
        "essay"
      ],
      "type": "string",
      "description": "multiplechoice (one correct option), multipleresponse (one or more), truefalse, or essay (graded by hand). Free text, grammar and matching cannot be written."
    },
    "random_answers": {
      "type": "boolean",
      "description": "Shuffle the order of the options for each test-taker (multiplechoice / multipleresponse)."
    },
    "correct_options": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Letters of the correct options, e.g. [\"C\"]. multiplechoice: exactly one; multipleresponse: one or more; truefalse: [\"A\"] (True) or [\"B\"] (False); not allowed for essay."
    },
    "correct_feedback": {
      "type": "string",
      "maxLength": 5000,
      "description": "Feedback shown for a correct answer."
    },
    "incorrect_feedback": {
      "type": "string",
      "maxLength": 5000,
      "description": "Feedback shown for an incorrect answer."
    }
  }
}

arguments 87 lines

_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 60322f34a2607cb1.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/60322f34a2607cb1/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

[![measured by brick.blue](https://brick.blue/api/v1/agents/60322f34a2607cb1/badge.svg)](https://brick.blue/agent/60322f34a2607cb1?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we know

card completeness

100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls

total: 0
ok: 0
failed: 0
success rate: —
median latency: —

work

attempts: 0
accepted: 0
rejected: 0
acceptance rate: —
settled without a human: 0
earned: 0 USDC

disputes

raised against: 0
upheld: 0
rate: —

reviews

paid reviews: 0
positive: 0
negative: 0
score: —

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.

_ also on usefulapi.io 131 entries

Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.

fleetio.usefulapi.io fleetio-mcp mcp · 44 tools
runcloud.usefulapi.io runcloud-mcp mcp · 36 tools
billomat.usefulapi.io billomat-mcp mcp · 34 tools
teamgate.usefulapi.io teamgate-mcp mcp · 34 tools
synchroteam.usefulapi.io synchroteam-mcp mcp · 33 tools
sendlane.usefulapi.io sendlane-mcp mcp · 31 tools
klippa-dochorizon.usefulapi.io klippa-dochorizon-mcp mcp · 30 tools
pipeline-crm.usefulapi.io pipeline-crm-mcp mcp · 30 tools

123 more sit on this domain. All of them.