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Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Communication & messaging

SlickText MCP by usefulapi

Read SlickText contacts, lists, campaigns, analytics and inbox; create and update contacts.

Checks passed
13 / 22

1 failed · 8 not measured

Median response
58 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
24

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 58 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name slicktext-mcp.

  • Pass
    Lists tools

    tools/list returned 24 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 58 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 58 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    71 of 89 parameters have a description (80%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-10T23:33:49.412373Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using SlickText MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http slicktext-mcp-by-usefulapi https://slicktext.usefulapi.io/mcp

Capabilities

Tools 24

slicktext_add_contact_to_lists

WRITE: add one contact to one or more contact lists (it does not change the contact's opt-in status; lists are also campaign audiences). Returns SlickText's count of memberships added. WARNING: SlickText workflows can trigger on this event (Contact Created / Contact Field Changed / Contact Added to List) and may immediately SEND REAL TEXTS or take other actions configured in the brand's workflows. POST /brands/{brand_id}/lists/contacts.

Discovered
slicktext_create_contact

WRITE: add a contact to the brand. By default the contact is created as 'not subscribed' and gets no text. Set opt_in_status='subscribed' ONLY for people who gave explicit permission to receive texts (SlickText has a zero-tolerance policy for unsolicited texts). force_double_opt_in=true makes SlickText SEND A REAL SMS to the number asking the person to confirm. Check slicktext_find_contact first to avoid duplicates. WARNING: SlickText workflows can trigger on this event (Contact Created / Contact Field Changed / Contact Added to List) and may immediately SEND REAL TEXTS or take other actions configured in the brand's workflows. POST /brands/{brand_id}/contacts.

Discovered
slicktext_find_contact

Find contacts by mobile number or email address (exact match). A 10-digit US number is matched as +1XXXXXXXXXX, the way SlickText stores numbers. Use it before creating a contact to avoid duplicates. GET /brands/{brand_id}/contacts?mobile_number=… or ?email=….

Discovered
slicktext_get_analytics

Brand-level analytics. metric: contacts (current totals), contact_growth, contact_add_delete_events, opt_in_status_events, campaigns, messages (messages sent), message_credits, inbox_users (assignments, closures, response times per user), inbox_tags. Optional group (allowed per metric — contacts: source|opt_in_status; contact_growth/campaigns: contact_source; contact_add_delete_events: contact_source|type; opt_in_status_events: contact_source|contact_unsubscribe_source|opt_in_status; messages: source|status|direction|weekday; message_credits: source|status), a start/end range, frequency (hour/day/month/year) and compare (YoY, QoQ, MoM, WoW, DoD, PoP). GET /brands/{brand_id}/analytics/….

Discovered
slicktext_get_brand

Get the SlickText brand this API key belongs to: brand_id, name, website, sending-number registration details, opt-in / double-opt-in messages, inbox settings and the message credit limit. Every other tool works within this brand. GET /brands.

Discovered
slicktext_get_campaign

Get one campaign by id: body, media_url, status, audience_size, schedule and completion. GET /brands/{brand_id}/campaigns/{id}.

Discovered
slicktext_get_campaign_stats

Performance of one campaign: contacts reached, clicks, click_rate, unique clicks, unsubscribes, unsubscribe_rate, orders, revenue, average order value, revenue per message, plus the campaign, its audiences and links. GET /brands/{brand_id}/analytics/campaigns/{id}.

Discovered
slicktext_get_contact

Get one contact by id: name, mobile_number, email, birthdate, address, opt_in_status, source, custom_fields, time zone and dates. GET /brands/{brand_id}/contacts/{id}.

Discovered
slicktext_get_conversation

Get the content of one inbox conversation by its id (the _id from slicktext_list_conversations). For the message-by-message history also call slicktext_list_messages with source=InboxThread and source_id=<conversation id>. GET /brands/{brand_id}/inbox-threads/{id}/content.

Discovered
slicktext_get_credit_usage

Message credits for the current billing period: total_credits (subscription + rollover + purchased), credits_used, credits_available and the credit limit. GET /brands/{brand_id}/usage.

Discovered
slicktext_get_keyword

Get one keyword by id, including the contact_list_ids that people who text it are added to. GET /brands/{brand_id}/keywords/{id}.

Discovered
slicktext_get_list

Get one contact list by id plus its contact count (all statuses: subscribed, not subscribed, unsubscribed, blocked). GET /brands/{brand_id}/lists/{id} and /lists/{id}/contacts/count.

Discovered
slicktext_list_campaigns

List the brand's SMS/MMS campaigns: name, body, status (e.g. draft, scheduled, queued, sent), scheduled/started/finished times, completion_percentage and audience (lists/segments and size). GET /brands/{brand_id}/campaigns.

Discovered
slicktext_list_contacts

List the brand's contacts (subscribers) with name, mobile_number, email, opt_in_status, source, custom_fields and dates. Filters are exact, case-sensitive matches (SlickText has no partial search). Paged: returns count, has_more and next_offset. GET /brands/{brand_id}/contacts.

Discovered
slicktext_list_conversations

List two-way inbox conversations: status (open, pending, closed), the contact, the last message and its direction/time, assigned user, tags and unread state. GET /brands/{brand_id}/inbox-threads.

Discovered
slicktext_list_custom_fields

List the brand's contact custom fields: name, internal_name (the key used in contact filters and writes), data_type and description. GET /brands/{brand_id}/custom-fields.

Discovered
slicktext_list_inbox_tags

List the inbox tags used to label conversations (inbox_tag_id, name, color, description). GET /brands/{brand_id}/inbox-tags.

Discovered
slicktext_list_keywords

List the brand's text-to-join keywords (word, description, active, auto-response and opt-in messages, double opt-in). GET /brands/{brand_id}/keywords.

Discovered
slicktext_list_list_contacts

List the contacts in one contact list (paged). GET /brands/{brand_id}/lists/{id}/contacts.

Discovered
slicktext_list_lists

List the brand's contact lists (contact_list_id, name, description, created). Optional exact name filter. GET /brands/{brand_id}/lists.

Discovered
slicktext_list_messages

List individual SMS/MMS messages sent and received by the brand: to, from, body, direction, source (Campaign, Keyword, InboxThread, API …), status (delivered, undelivered …), credits and the contact. Filters are exact matches; use to/from with a phone number to read one contact's history, or source=InboxThread with source_id = a conversation id. GET /brands/{brand_id}/messages.

Discovered
slicktext_list_segment_contacts

List the contacts that currently match one segment (paged). GET /brands/{brand_id}/segments/{id}/contacts.

Discovered
slicktext_list_segments

List the brand's segments (rule-based contact groups: segment_id, name, description). GET /brands/{brand_id}/segments.

Discovered
slicktext_update_contact

WRITE: change fields of an existing contact (only the fields you pass are sent). opt_in_status can mark a contact unsubscribed or blocked; set it to 'subscribed' ONLY when the person explicitly agreed to receive texts. WARNING: SlickText workflows can trigger on this event (Contact Created / Contact Field Changed / Contact Added to List) and may immediately SEND REAL TEXTS or take other actions configured in the brand's workflows. PUT /brands/{brand_id}/contacts/{id}.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected58 ms24