RB2B · Rate Limits

Rb2B Rate Limits

RB2B publishes exactly one rate limit, and it is published inside an npm package rather than on a documentation site: 50 requests per second per endpoint on the Identity / Enrichment API. No limit is published for the OEM Partner API. No RateLimit-* / X-RateLimit-* / Retry-After header was observed on any response, so a client has no runtime signal — only the documented number and a 429 when it is crossed. The real throughput constraint in practice is the prepaid credit balance, not the per-second ceiling.

Rb2B Rate Limits is the machine-readable rate-limit profile for RB2B on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions, measuring requests_per_second.

Tagged areas include Identity Resolution, Visitor Identification, B2B Data, Lead Generation, and Sales Intelligence.

2 Limits
Identity ResolutionVisitor IdentificationB2B DataLead GenerationSales IntelligenceMarketingData EnrichmentLinkedIn EnrichmentHashed EmailMobile Ad IDFirmographicsWebhookPixelAdTechIdentity GraphMCP

Limits

Identity / Enrichment API requests per-endpoint
requests_per_second
50
OEM Partner API requests unknown

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/rb2b-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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