Skip to content
verify mcp Beta VerifyMCP is currently in beta. If you notice any issues, get in touch and we’ll put it right.

CATS MCP by usefulapi

REMOTE · CATS-ATS.USEFULAPI.IO

Read CATS candidates, jobs and pipelines, and make explicitly confirmed recruiting changes.

18 Trust /100

Last scanned (1 hour ago)

Scores higher than 4% of remote servers

Reachable. Last reached 5 Nov 2026.

Category CRM and Sales

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security46
Transport & Reachability0
Schema Quality & AI Usability0
  • Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
  • Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
  • Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
  • Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
  • Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified

Unverified: 5 categories

Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 1 Nov 26 −47
    • Endpoint reachability: reachable → not serving MCP ▼ security
    • Tool safety: pass → unverified ▼ security
    • Authorization: pass → unverified ▼ security
    • Schema quality: 100 → unverified ▼ functional
    • Capabilities: pass → unverified ▼ functional
    • Tool coverage: 100 → unverified ▼ functional
  • 31 Oct 26 65

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 5 Nov 2026 · Probed https://cats-ats.usefulapi.io/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=usefulapi.io CN=WE1,O=Google Trust Services,C=US 13 Sept 2026 12 Dec 2026 ECDSA 256 ECDSA-SHA256 d9be3287b0fde9630e825ba1f79bff3f
SANs: usefulapi.io, *.usefulapi.io
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of cats-ats.usefulapi.io. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
io. present 38690 8 Verified
usefulapi.io. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication Inconclusive

We could not reach the endpoint well enough to judge its authorisation posture.

Result Inconclusive
HTTP status 302

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://cats-ats.usefulapi.io/mcp Redirected 302 https://usefulapi.io/cats-ats/
http (plaintext) http://cats-ats.usefulapi.io/mcp Inconclusive 302 http://cats-ats.usefulapi.io/mcp
MCP tools · 34 exposed · ~3,246 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
cats_add_candidate_activity ~178

WRITE: Requires confirm:true. log an activity (a call, meeting, note...) on a candidate's record. It only records the entry in CATS: no email/SMS-send request is made, even for type 'email' or 'text_message'. Creates a new entry each time (not idempotent). POST /candidates/{id}/activities.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.
confirmbooleanyesConfirm this change to the CATS account.
datestring–When it happened (ISO 8601); default now.
notesstringyesThe note text.
regarding_job_idinteger–The job order this activity is about; omit for a general activity.
typestringyesActivity type; use 'other' for a plain note.

No output schema declared.

No examples provided.

cats_change_pipeline_status ~188

WRITE: Requires confirm:true. change the status of a pipeline (move a candidate to another stage of a job's workflow, e.g. Interviewing, Offered, Rejected). Get the pipeline id from cats_list_candidate_pipelines and the status id from cats_list_workflow_statuses. Requires confirm:true. Requests that status triggers (which can e-mail people or change records) be suppressed: every trigger attached to the target status is sent with fire=false. CATS remains responsible for enforcing its trigger semantics; independently configured webhooks may still run. The change is recorded in the pipeline's status history. POST /pipelines/{id}/status.

NameTypeReqDescription
confirmbooleanyesConfirm this change to the CATS account.
pipeline_idintegeryesCATS pipeline id.
status_idintegeryesThe status to move to; must belong to the pipeline's workflow.

No output schema declared.

No examples provided.

cats_create_candidate ~273

WRITE: Requires confirm:true. create one candidate record (personal data) with name, optional contact details and notes. Refuses when CATS finds a duplicate (check_duplicate=true, the default). Creates a new record each time (not idempotent); no email-send request is made to the candidate and no login is created. POST /candidates.

NameTypeReqDescription
check_duplicateboolean–Refuse to create when a duplicate exists (default true).
citystring––
confirmbooleanyesConfirm this change to the CATS account.
country_codestring–ISO 3166 two-letter country code.
current_employerstring––
emailstring–Primary e-mail address (stored only, never mailed).
first_namestringyes–
key_skillsstring––
last_namestringyes–
notesstring––
owner_idinteger–CATS user id of the record owner.
phonestring–Phone number with country code.
phone_typestring–Phone type (default mobile).
postal_codestring––
sourcestring–Where the candidate came from.
statestring––
titlestring–Current job title.

No output schema declared.

No examples provided.

cats_create_task ~182

WRITE: Requires confirm:true. create a task in CATS, optionally about a candidate, contact, company or job and assigned to a user. Creates a new task each time (not idempotent); CATS may notify the assignee. POST /tasks.

NameTypeReqDescription
about_idinteger–Id of that record.
about_typestring–Kind of record the task is about; omit for a general task. Needs about_id.
assigned_to_idinteger–CATS user id of the assignee (see cats_list_users).
confirmbooleanyesConfirm this change to the CATS account.
date_duestring–Due date (ISO 8601); omit for ASAP.
descriptionstringyesWhat has to be done.
priorityinteger–1 (lowest) to 5.

No output schema declared.

No examples provided.

cats_filter_candidates ~188

Filter candidates by fields (read-only, although it is a POST): first_name, last_name, title, emails.primary, address.city/state/postal_code, country_code, current_employer, key_skills, notes, dates (date_created, date_modified), owner_id, is_hot... Each condition is {field, filter, value}; filters: exactly, contains, between {gte,lte}, greater_than, less_than, is_empty, geo_distance. Paged. POST /candidates/search.

NameTypeReqDescription
conditionsarrayyesOne or more conditions.
matchstring–How several conditions combine: all = AND (default), any = OR.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_filter_pipelines ~137

Filter pipelines by id, candidate_id, job_id, status_id, rating, date_created or date_modified (read-only, although it is a POST). Each condition is {field, filter, value}. Paged. POST /pipelines/search.

NameTypeReqDescription
conditionsarrayyesOne or more conditions.
matchstring–How several conditions combine: all = AND (default), any = OR.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_get_candidate ~36

One candidate by id (personal data). GET /candidates/{id}.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.

No output schema declared.

No examples provided.

cats_get_company ~32

One company by id. GET /companies/{id}.

NameTypeReqDescription
company_idintegeryesCATS company id.

No output schema declared.

No examples provided.

cats_get_contact ~36

One client contact by id (personal data). GET /contacts/{id}.

NameTypeReqDescription
contact_idintegeryesCATS contact id.

No output schema declared.

No examples provided.

cats_get_job ~37

One job order by id, with its description. GET /jobs/{id}.

NameTypeReqDescription
job_idintegeryesCATS job id.

No output schema declared.

No examples provided.

cats_get_pipeline ~40

One pipeline (a candidate on a job) by id. GET /pipelines/{id}.

NameTypeReqDescription
pipeline_idintegeryesCATS pipeline id.

No output schema declared.

No examples provided.

cats_get_pipeline_status_history ~92

The status changes of a pipeline over time (status, who, when). GET /pipelines/{id}/statuses.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
pipeline_idintegeryesCATS pipeline id.

No output schema declared.

No examples provided.

cats_get_site ~40

The CATS site (account) this API key belongs to: id, mode (recruiter or employer) and subdomain. GET /site.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

cats_get_task ~32

One task by id. GET /tasks/{id}.

NameTypeReqDescription
task_idintegeryesCATS task id.

No output schema declared.

No examples provided.

cats_list_activities ~84

The site-wide activity log (calls, emails logged, meetings, notes) with the record each is about, paged. GET /activities.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_candidate_activities ~96

The activity log of a candidate (calls, meetings, notes, pipeline changes), paged. GET /candidates/{id}/activities.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_candidate_attachments ~104

File names, sizes and whether each file is a resume, for a candidate's attachments. Metadata only: file contents are never downloaded. GET /candidates/{id}/attachments.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_candidate_pipelines ~97

The jobs a candidate is in the pipeline for, with rating, workflow and current status id. GET /candidates/{id}/pipelines.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_candidate_tasks ~82

Tasks attached to a candidate. GET /candidates/{id}/tasks.

NameTypeReqDescription
candidate_idintegeryesCATS candidate id.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_candidates ~102

List candidates (personal data: name, emails, address, employer, skills, notes), one page at a time, max 100 per page. Use cats_search_candidates or cats_filter_candidates to find specific people. GET /candidates.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_companies ~74

List client companies (name, address, website, owner), paged. GET /companies.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_contacts ~76

List client contacts (personal data: name, title, emails, company), paged. GET /contacts.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_job_pipelines ~101

The candidates in the pipeline of a job: pipeline id, candidate id, rating and current status id. Paged. GET /jobs/{id}/pipelines.

NameTypeReqDescription
job_idintegeryesCATS job id.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_job_statuses ~77

The statuses a job order can have (Active, OnHold, Closed...). GET /jobs/statuses.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_jobs ~80

List job orders with title, location, company, recruiter, status and workflow ids, dates. Paged. GET /jobs.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_pipelines ~83

List candidate-to-job pipelines (candidate id, job id, rating, workflow id, status id), paged. GET /pipelines.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_tasks ~86

List tasks (description, priority 1-5, due date, assignee, completion, the record it is about), paged. GET /tasks.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_users ~87

List the CATS users (recruiters) with id, name, title and access level. Use the ids as owner or assignee. GET /users.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_list_workflow_statuses ~114

The statuses of one pipeline workflow (id, title, prerequisites, triggers). Use the ids with cats_change_pipeline_status. GET /pipelines/workflows/{id}/statuses.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
workflow_idintegeryesWorkflow id, from cats_list_workflows or a pipeline's workflow_id.

No output schema declared.

No examples provided.

cats_list_workflows ~79

The pipeline workflows (sets of statuses such as Contacted, Interviewing, Offered). GET /pipelines/workflows.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).

No output schema declared.

No examples provided.

cats_search_candidates ~90

Free-text search over candidates (name, email, skills, resume text...), paged. GET /candidates/search?query=.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
querystringyesSearch text.

No output schema declared.

No examples provided.

cats_search_companies ~81

Free-text search over companies, paged. GET /companies/search?query=.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
querystringyesSearch text.

No output schema declared.

No examples provided.

cats_search_contacts ~81

Free-text search over client contacts, paged. GET /contacts/search?query=.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
querystringyesSearch text.

No output schema declared.

No examples provided.

cats_search_jobs ~81

Free-text search over job orders, paged. GET /jobs/search?query=.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-100 (default 25).
querystringyesSearch text.

No output schema declared.

No examples provided.

Install

How do I install the CATS MCP by usefulapi server?

CATS MCP by usefulapi is a hosted endpoint at https://cats-ats.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · cats-ats.usefulapi.io

# add to Claude Code
claude mcp add --transport http io-usefulapi-cats-ats 'https://cats-ats.usefulapi.io/mcp'
Common questions

What is the CATS MCP by usefulapi server?

CATS MCP by usefulapi is listed in the public MCP registry as io.usefulapi/cats-ats. Read CATS candidates, jobs and pipelines, and make explicitly confirmed recruiting changes. This page covers its hosted endpoint (https://cats-ats.usefulapi.io/mcp).

Is the CATS MCP by usefulapi server safe to use?

CATS MCP by usefulapi scores 18 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the CATS MCP by usefulapi server expose?

CATS MCP by usefulapi exposes 34 tools: cats_get_site, cats_list_users, cats_list_candidates, cats_get_candidate, cats_search_candidates, and 29 more. Their descriptions and schemas cost roughly 3,246 tokens of context every time the server is loaded.

Does the CATS MCP by usefulapi server require authentication?

Its publisher declares no required credentials for CATS MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.

Is the CATS MCP by usefulapi server still maintained?

CATS MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.