LeadFlags

Name: LeadFlags
Price: 249 EUR

Paid APIWeb

What LeadFlags is

LeadFlags is a lead-scoring API and web service that screens inbound leads before they reach a CRM or call queue. It applies predefined rules to submitted details and returns a score, quality level, risk flags, positive signals, and a suggested routing action. The same input produces the same result, and the scoring method does not use AI, enrichment, or profiling. Inputs can include a name, email, phone number, message, source, country, job title, industry, company size, or website. The JSON API accepts flexible data without a fixed schema, recognizes field aliases, and allows mapping overrides for nonstandard keys. It can identify missing or invalid contact details, disposable email, suspicious messages, and inconsistencies between fields. LeadFlags describes itself as CRM-agnostic and says it can sit before any CRM or workflow; HubSpot and Salesforce are examples. Requests require an X-API-Key header. Plans start at €39/mo, with higher lead limits and support options on paid tiers. Enterprise plans add controls such as an IP allowlist and custom score thresholds. The service is available on web and through an API.

Who it suits

LeadFlags suits marketing agencies, call centers, and lead sellers or buyers that want consistent rules for screening inbound leads. It may fit teams routing leads into different CRMs or workflows that prefer deterministic scoring rather than AI-based assessment.

What it does well

Returns scores, quality levels, risk flags, positive signals, and routing actions.
Uses consistent predefined rules without AI, enrichment, or profiling.
Accepts flexible JSON and supports field aliases and mapping overrides.
Can be used before any CRM or workflow.
Enterprise plans include IP allowlisting and custom score thresholds.

What to know first

No free plan is offered.
Starter is limited to 1,000 leads per month.
API requests require an X-API-Key; Bearer authorization is not supported.

Limits

Starter covers up to 1,000 leads per month and has a 60-request-per-minute example rate limit. Growth covers up to 10,000 leads per month with a 300-request-per-minute example limit; Scale covers up to 50,000 with a 1,000-request-per-minute example limit. Annual billing offers a 20% discount.

Plans

Plan	Billed and limits	Price
Scale	249 € / month; annual billing offers −20% discount · Up to 50,000 leads / month · Higher rate limits · Priority support · Basic SLA for availability	€249 a month
Starter	39 € / month; annual billing offers −20% discount · Up to 1,000 leads / month · Full scoring and flags · Email support · Production-ready service	€39 a month
Growth	99 € / month; annual billing offers −20% discount · Up to 10,000 leads / month · Priority processing · Fast support · Early access to new scoring logic	€99 a month
Enterprise	Custom billing and terms · 100,000+ leads · Dedicated SLA and support · IP allowlist · Custom score thresholds	On request

As leadflags.com lists them, read 15 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://leadflags.com/.
Choose a paid plan, starting with Starter at €39/mo for up to 1,000 leads per month.
Send JSON requests to the API with an X-API-Key header.
Use field aliases or optional mapping overrides for nonstandard input keys.
Connect the results to a CRM or workflow, such as HubSpot or Salesforce.

Verdict

Choose LeadFlags if inbound lead screening needs to follow consistent predefined rules and return actionable routing signals. It offers flexible JSON input and CRM-agnostic use, but teams seeking a free plan or AI-based predictive scoring should look elsewhere.

Questions

How much does LeadFlags cost?

Starter costs €39.00 per month, Growth €99.00 per month, and Scale €249.00 per month. Enterprise uses custom billing and terms; annual billing offers a 20% discount.

Is there a free plan?

No, LeadFlags is paid and has no free plan.

What does its scoring return?

The API returns a score, quality level, risk flags, positive signals, and a recommended action for routing.

Does LeadFlags use AI or profile leads?

No. Its scoring uses predefined rules, and the documentation says it does not use AI, enrichment, or profiling.

Which platforms and CRMs does it support?

LeadFlags is available through web and API and describes itself as CRM-agnostic. HubSpot and Salesforce are named as examples.

What authentication does the API use?

API requests require an X-API-Key header. Bearer authorization is not yet supported.

Facts from LeadFlags's own pages

API access: API requests use JSON and require an X-API-Key header; the docs say Bearer authorization is not yet supported. · leadflags.com, 7 Oct 2026
Authentication: API requests require an X-API-Key header obtained from the dashboard. · leadflags.com, 15 Oct 2026
Bearer limitation: Bearer authorization is documented as coming soon; X-API-Key is currently the supported method. · leadflags.com, 15 Oct 2026
CRM positioning: LeadFlags describes itself as CRM-agnostic and intended to sit before any CRM, call center or workflow. · leadflags.com, 15 Oct 2026
Cross-field checks: The API can flag mismatches such as name versus email, email domain versus website and source versus email type. · leadflags.com, 15 Oct 2026
Custom thresholds: Enterprise requests can pass mid and low query parameters to customize score cutoffs. · leadflags.com, 15 Oct 2026
Deterministic scoring: The documentation says identical input produces identical output using predefined, transparent rules. · leadflags.com, 15 Oct 2026
Enterprise controls: Enterprise plans list an IP allowlist, dedicated SLA and support, and custom score thresholds. · leadflags.com, 7 Oct 2026
Features: LeadFlags identifies signals such as missing or invalid contact details, disposable email, suspicious messages, and inconsistencies between fields. · leadflags.com, 7 Oct 2026
Flexible input: The API accepts JSON without a fixed schema, recognizes field aliases, and allows optional mapping overrides for nonstandard keys. · leadflags.com, 7 Oct 2026
Flexible schema: The API accepts arbitrary JSON without a fixed schema and detects fields through aliases. · leadflags.com, 15 Oct 2026
Independent design: The About page says the service operates independently from CRMs and marketing tools. · leadflags.com, 15 Oct 2026
Integrations: LeadFlags describes itself as CRM-agnostic and says it can be used before any CRM or workflow; the site mentions HubSpot and Salesforce as examples. · leadflags.com, 7 Oct 2026
Intended users: The site names marketing agencies, call centers, and lead sellers and buyers as audiences for consistent lead scoring. · leadflags.com, 7 Oct 2026
IP allowlist: Enterprise can restrict accepted API traffic to authorized IP addresses. · leadflags.com, 15 Oct 2026
JSON API: The service exposes POST /api/score-lead and requires JSON request bodies. · leadflags.com, 15 Oct 2026
Limit: API authentication: Integrators cannot currently use Bearer authorization because the documentation says it is not yet supported. · leadflags.com, 15 Oct 2026
Limit: no published licence: The opened official documentation and About pages do not state an open-source licence or self-hosting option. · leadflags.com, 15 Oct 2026
Limit: support guarantee: The docs state ordinary email support has no guaranteed response time. · leadflags.com, 15 Oct 2026
LinkedIn audience signal: The public LinkedIn LeadFlags page showed one follower when the post was indexed. · linkedin.com, 15 Oct 2026
LinkedIn launch: LeadFlags’ LinkedIn post announces that the product is live as a deterministic lead-quality scoring API. · linkedin.com, 15 Oct 2026
LinkedIn lock-in claim: The launch post describes the service as having no CRM lock-in. · linkedin.com, 15 Oct 2026
LinkedIn output: The launch post says results include a normalized score, quality level, explanatory flags and a recommended action. · linkedin.com, 15 Oct 2026
LinkedIn schema claim: The LinkedIn post says the API has no fixed schema for inbound lead data. · linkedin.com, 15 Oct 2026

Where LeadFlags stands on Freedom251

Lead Scoring Software#19 of 24