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ReferralHero MCP by usefulapi

REMOTE · REFERRALHERO.USEFULAPI.IO

Read ReferralHero campaigns, subscribers, referrals and rewards; add subscribers and points.

62 Trust /100

Last scanned (3 hours ago)

Scores higher than 46% of remote servers

Reachable. Last reached 25 Oct 2026.

Category Marketing and SEO

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 Security78
Transport & Reachability0
Schema Quality & AI Usability79
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 4824 tokens (~172/item across 28 items; 28 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management3
  • Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
  • An AI judge read all 29 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
  • Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
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.

  • 25 Oct 26 0
    • Stability: unverified → 0.03 ▲ functional
    • Server version: 1.0.0 → 1.0.3 functional
  • 24 Oct 26 62

    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 25 Oct 2026 · Probed https://referralhero.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 referralhero.usefulapi.io. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
io. present 38690, 57355 8, 8 Verified
usefulapi.io. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result Enforced and verified
Enforced On tool calls
HTTP status 302

WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://referralhero.usefulapi.io/.well-known/oauth-protected-resource/mcp"

Bearer realm="OAuth", resource_metadata="https://referralhero.usefulapi.io/.well-known/oauth-protected-resource/mcp"

Protected resource metadata

Document https://referralhero.usefulapi.io/.well-known/oauth-protected-resource/mcp
Retrieved Yes
Resource https://referralhero.usefulapi.io/mcp
Authorisation server https://referralhero.usefulapi.io

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

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://referralhero.usefulapi.io/mcp Redirected 302 https://usefulapi.io/referralhero/
http (plaintext) http://referralhero.usefulapi.io/mcp Inconclusive 302 http://referralhero.usefulapi.io/mcp
MCP tools · 28 exposed · ~4,564 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
referralhero_add_coupons ~95

WRITE: add coupon codes to an existing coupon group. It only adds codes. POST /lists/{uuid}/coupons.

NameTypeReqDescription
coupon_group_idstringyesCoupon group id (see referralhero_list_coupon_groups).
couponsarrayyesCoupon codes to add.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_add_points ~207

WRITE: add points to an existing subscriber (not idempotent: each call adds again). May unlock point-based rewards. The subscriber is identified by the campaign's unique identifier. POST /lists/{uuid}/subscribers/add_points.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
emailstring–Subscriber email (when email is the campaign's unique identifier).
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
pointsintegeryesPoints to add.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_add_subscriber ~499

WRITE: add a subscriber (or a referred person) to a campaign. Give the campaign's unique identifier (email, phone, wallet or custom id). By default ReferralHero sends the subscriber a confirmation (double opt-in) email and any welcome automation of the campaign: set double_optin=false to suppress the confirmation email. Set referrer (a referral code or the referrer's email) to credit a referral. POST /lists/{uuid}/subscribers.

NameTypeReqDescription
advocate_namestring–Name of the advocate.
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
conversion_categorystring–Subscriber type for reports and segments.
conversion_valuenumber–Monetary value of the referral.
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
devicestring–Device used to sign up, for analytics.
domainstring–URL used for the subscriber's referral link.
double_optinboolean–false = do not send the confirmation email. Default: the campaign's setting (usually sends it).
emailstring–Subscriber email (when email is the campaign's unique identifier).
extra_fieldstring–Extra field value.
extra_field_2string–Extra field 2 value.
namestring–Subscriber name.
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
pointsinteger–Starting points (contest campaigns only).
referrerstring–Referral code or email of the referrer to credit.
self_reported_sourcestring–Where the subscriber says they heard about the campaign.
sourcestring–Source, for analytics.
statusstring–custom_event_pending = set the referral status to pending (multi-step goals).
stripe_customer_idstring–Stripe customer id to link.
tagsarray–Tags to assign.
transaction_idstring–Unique id of the purchase this referral came from.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_confirm_referral ~268

WRITE: confirm a verified referral when its third conversion event happens (campaigns whose goal tracks three events; otherwise ReferralHero returns an error). Confirming can unlock the referrer's rewards and send reward emails. Identify the referral by subscriber_id, or by the campaign's unique identifier. POST /lists/{uuid}/subscribers/{id}/confirm or /subscribers/confirm.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
conversion_valuenumber–Referral conversion value.
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
emailstring–Subscriber email (when email is the campaign's unique identifier).
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
subscriber_idstring–Subscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_create_campaign ~66

WRITE: create a new ReferralHero campaign (list) with a name and a default referral URL. It adds a campaign and changes nothing existing. POST /lists.

NameTypeReqDescription
namestringyesCampaign name.
websitestringyesDefault referral URL (https://...).

No output schema declared.

No examples provided.

referralhero_create_coupon_group ~110

WRITE: create a coupon group for a campaign, optionally with its first coupon codes. It only adds a group. POST /lists/{uuid}/coupon_groups.

NameTypeReqDescription
activeboolean–Whether the group is active (default true).
couponsarray–Coupon codes to put in the group.
namestringyesCoupon group name.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_delete_subscriber ~123

WRITE, DESTRUCTIVE: permanently delete a subscriber from a campaign, with their referral standing. This cannot be undone. DELETE /lists/{uuid}/subscribers/{id}.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved permanently deleting this subscriber.
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_get_coupon_group ~84

One coupon group with all its coupons (code, available, sent_at). GET /lists/{uuid}/coupon_groups/{id}.

NameTypeReqDescription
coupon_group_idstringyesCoupon group id (see referralhero_list_coupon_groups).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_get_leaderboard ~92

The leaderboard of a campaign: its top subscribers (10 to 100) with referral counts, points and position. GET /lists/{uuid}/leaderboard.

NameTypeReqDescription
countinteger–How many top subscribers, 10-100 (default 10).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_get_subscriber ~115

One subscriber by id: contact data, referral code and link, points, position, referrals by level, status, fraud risk level, tags. Only verified subscribers are found. GET /lists/{uuid}/subscribers/{id}.

NameTypeReqDescription
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_get_subscriber_by_email ~80

Find one subscriber of a campaign by email. Only verified subscribers are found. GET /lists/{uuid}/subscribers/retrieve_by_email.

NameTypeReqDescription
emailstringyesThe subscriber's email.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_get_subscriber_by_referral_code ~104

Find the subscriber who owns a referral code (the mwr value in a referral link). Only verified subscribers are found. GET /lists/{uuid}/subscribers/retrieve_by_mwr.

NameTypeReqDescription
referral_codestringyesThe referrer's referral code (the mwr parameter of a referral link).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_campaign_rewards ~86

The rewards configured for a campaign (title, description, referrals needed to win each). This is the reward setup, not who earned what: see referralhero_list_unlocked_rewards for that. GET /lists/{uuid}/bonuses.

NameTypeReqDescription
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_campaigns ~77

List the active ReferralHero campaigns (lists) in the account: uuid, name, subscriber count and creation time. The uuid is needed by every other tool. 10 per page. GET /lists.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.

No output schema declared.

No examples provided.

referralhero_list_coupon_groups ~95

Coupon groups of a campaign (id, name, active flag, coupons with availability), 50 per page. GET /lists/{uuid}/coupon_groups.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_referrals ~206

The people a subscriber referred, 50 per page. scope: all (pending, unconfirmed and confirmed, default), level_1_confirmed, level_2_confirmed, level_3_confirmed (confirmed only, by referral level), level_2_all or level_3_all (every status at that level). GET /lists/{uuid}/subscribers/{id}/{referred|level_N_referrals|level_N_all_referrals}.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
scopestring–Which referrals (default all).
sort_bystring–Sort order.
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_subscriber_rewards ~147

Rewards one subscriber has unlocked, with status, value and coupon code. The reward id is what referralhero_update_reward_status needs. GET /lists/{uuid}/subscribers/{id}/rewards.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
statusstring–Only rewards in this status.
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_subscribers ~192

List the subscribers of a campaign, 50 per page, with referral code, referral link, points, position, people referred, status and referrer. Sort and filter by the extra fields. GET /lists/{uuid}/subscribers.

NameTypeReqDescription
extra_fieldstring–Only subscribers whose extra field has this value.
extra_field_2string–Only subscribers whose extra field 2 has this value.
option_fieldstring–Only subscribers whose option field has this value.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
sort_bystring–Sort order.
stripe_customer_idstring–Only the subscriber linked to this Stripe customer id.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_list_unlocked_rewards ~153

Rewards unlocked by subscribers across a whole campaign: reward name, status (sent, resent, canceled, pending, flagged), value, subscriber email and id, coupon code, transaction. Filter by status to find rewards still to pay out. GET /lists/{uuid}/rewards.

NameTypeReqDescription
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.
per_pageinteger–Results per page, 1-50 (default 10).
statusstring–Only rewards in this status.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_promote_subscriber ~153

WRITE: promote a subscriber to the campaign's winners list (contests and giveaways). Only verified subscribers can be promoted; an already promoted subscriber returns an error. POST /lists/{uuid}/subscribers/{id}/promote.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_qualify_referral ~140

WRITE: mark a referral as qualified, so it counts toward the referrer's rewards. POST /lists/{uuid}/subscribers/{id}/qualify.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_search_subscribers_by_name ~73

Search subscribers by name across all campaigns of the account, 50 per page. GET /subscribers/search_by_name.

NameTypeReqDescription
namestringyesName to search for.
pageinteger–Page number, from 1 (default 1). Pass the previous reply's next_page.

No output schema declared.

No examples provided.

referralhero_track_conversion_event ~306

WRITE: report a conversion event for a referral (campaigns whose goal tracks two or three events). Updates the referral from pending to confirmed (two events) or unconfirmed (three). If the referral is unknown but a referrer is given, the referral is created. May unlock rewards. POST /lists/{uuid}/subscribers/track_referral_conversion_event.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
conversion_valuenumber–Referral conversion value.
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
emailstring–Subscriber email (when email is the campaign's unique identifier).
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
product_idstring–Product id (for product-based rewards).
referrerstring–Unique identifier of the referrer (needed to create a missing referral).
stripe_customer_idstring–Stripe customer id.
tagsarray–Tags to assign.
transaction_idstring–Transaction id for the event.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_track_transaction ~275

WRITE: record a purchase/transaction for a subscriber (amount required) so revenue-based rewards and reports count it (not idempotent unless a transaction_id is reused). The subscriber is identified by the campaign's unique identifier. POST /lists/{uuid}/subscribers/add_transactions.

NameTypeReqDescription
amountnumberyesAmount of the transaction.
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
emailstring–Subscriber email (when email is the campaign's unique identifier).
lifetime_spendnumber–The subscriber's total lifetime spend.
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
product_idstring–Product id (for product-based rewards).
reward_valuenumber–A reward value to attach to the transaction.
transaction_idstring–Your unique transaction id.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_unlock_promoted_reward ~157

WRITE: unlock a promoted-winner or one-off reward for a subscriber. This delivers the reward and may email the subscriber and use coupon codes. POST /lists/{uuid}/subscribers/{id}/unlock_promoted_reward.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved delivering this reward to the subscriber now.
reward_idstringyesId of the promotion reward (see referralhero_list_campaign_rewards).
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_unqualify_referral ~151

WRITE: mark a referral as unqualified (for example fraud or a refund), so it no longer counts toward the referrer's rewards. POST /lists/{uuid}/subscribers/{id}/unqualify.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_update_reward_status ~155

WRITE: set the status of an unlocked reward to sent, resent or canceled. Marking sent/resent can trigger the reward delivery email to the subscriber. Get the reward_id from referralhero_list_subscriber_rewards or referralhero_list_unlocked_rewards. POST /lists/{uuid}/subscribers/update_reward_status.

NameTypeReqDescription
confirmbooleanyesMust be true: the user has approved this reward status change (sent/resent can email the reward; canceled withdraws it).
reward_idstringyesId of the unlocked reward.
statusstringyesNew status.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

referralhero_update_subscriber ~355

WRITE: change fields of a subscriber (overwrites the given fields): name, contact identifiers, extra fields, points (contest campaigns), tags, address, referral status (qualified/unqualified). Only fields you pass change. Only verified subscribers can be updated. POST /lists/{uuid}/subscribers/{id}.

NameTypeReqDescription
addressstring–Address.
citystring–City.
confirmbooleanyesMust be true: the user has approved this change. It can unlock rewards and make ReferralHero email or text the subscriber or referrer (automations).
countrystring–Country.
crypto_wallet_addressstring–Wallet address (when it is the unique identifier).
emailstring–Subscriber email (when email is the campaign's unique identifier).
extra_fieldstring–New extra field value.
extra_field_2string–New extra field 2 value.
namestring–New name.
other_identifier_valuestring–Custom identifier value (when a custom id is the unique identifier).
phone_numberstring–Subscriber phone number (when phone is the unique identifier).
pointsinteger–New points total (contest campaigns only).
referral_statusstring–Mark the referral qualified or unqualified.
stripe_customer_idstring–Stripe customer id.
subscriber_idstringyesSubscriber id, e.g. sub_2bad325a25d7 (the id field of a subscriber).
tagsarray–Tags to assign.
uuidstringyesCampaign (list) uuid, the 12-character id starting with MF (see referralhero_list_campaigns).

No output schema declared.

No examples provided.

Install

How do I install the ReferralHero MCP by usefulapi server?

ReferralHero MCP by usefulapi is a hosted endpoint at https://referralhero.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 · referralhero.usefulapi.io

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

What is the ReferralHero MCP by usefulapi server?

ReferralHero MCP by usefulapi is listed in the public MCP registry as io.usefulapi/referralhero. Read ReferralHero campaigns, subscribers, referrals and rewards; add subscribers and points. This page covers its hosted endpoint (https://referralhero.usefulapi.io/mcp).

Is the ReferralHero MCP by usefulapi server safe to use?

ReferralHero MCP by usefulapi scores 62 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 ReferralHero MCP by usefulapi server expose?

ReferralHero MCP by usefulapi exposes 28 tools: referralhero_list_campaigns, referralhero_get_leaderboard, referralhero_list_campaign_rewards, referralhero_create_campaign, referralhero_list_subscribers, and 23 more. Their descriptions and schemas cost roughly 4,564 tokens of context every time the server is loaded.

Does the ReferralHero MCP by usefulapi server require authentication?

Yes. ReferralHero MCP by usefulapi asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

Is the ReferralHero MCP by usefulapi server still maintained?

ReferralHero MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 25 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.