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Head to head · Lead search · October 2026 research run

Explorium AgentSource vs RocketReach API

RocketReach API scores 51.2 (D) on agent readiness against Explorium AgentSource's 48.1 (D), and leads in 3 of 7 scored categories. Explorium AgentSource leads on payments & pricing. Both do lead search.

Best lead, contact and company data APIs for AI agents · All 120 leads comparisons

Explorium AgentSourceExplorium Ltd. · HTTP API D48.1/100#821 of 950 RocketReach APIRocketReach, LLC · HTTP API D51.2/100#755 of 950

Which one, for what

Explorium AgentSource D

Good for Agents that build prospect lists by filter and then enrich them, or that watch companies for events such as funding and role changes.

Ahead on

  • Payments & pricing, 40 against 10

Watch for

No status page was found, and no SLA is published

RocketReach API D

Good for Teams that already hold a RocketReach plan and want an agent to search people and companies, reveal emails and phones, and verify single addresses over MCP.

Ahead on

  • Reliability, 64 against 42
  • Agent ergonomics, 72 against 63

Watch for

The pricing page is drawn by script and was not read, and the docs tell users without a paid plan to email for an API plan

Score by category

CategoryWeight this runExplorium AgentSourceRocketReach APIEdge
Reliability16%204264RocketReach API +22
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27672Explorium AgentSource +4
Agent ergonomics13%16.26372RocketReach API +9
Security & auth14%17.53734Explorium AgentSource +3
Payments & pricing10%12.54010Explorium AgentSource +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.82831RocketReach API +3
Transparency & trust7%8.85958Explorium AgentSource +1
Negative events≤15-20
Total48.1 · D51.2 · D

Facts side by side

FactExplorium AgentSourceRocketReach API
KindHTTP APIHTTP API
VendorExplorium Ltd.RocketReach, LLC
Hosted endpointhttps://api.explorium.aihttps://api.rocketreach.co/api/v2
TransportsHTTP, Streamable HTTP, SSE (legacy)HTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPay per usePaid
x402nono
LicenceProprietary service under the Explorium Terms of Use. The mcp-explorium repository of connection files is MITProprietary service under RocketReach's Terms of Service. The Python SDK on GitHub is MIT
Tools exposed119
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-02none
Terms last updated2026-06-142024-01-31
Privacy policy last updated2026-06-282026-09-30
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesyes
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesyes
Arbitration or class-action waivernot found in the textyes

Verdicts

Explorium AgentSource

AgentSource v2 has a public OpenAPI 3.1 file, Markdown docs, a 200 queries a minute limit with Retry-After, public credit prices and a 100-credit trial. No status page or published SLA was found, each company shares one API key with no scopes, and the vendor's two published price tables disagree.

RocketReach API

The hosted MCP server has nine documented tools, OAuth 2.1 with dynamic client registration and machine-readable error codes, and searches cost no credits. Plan prices were not readable, the docs send API plan requests to email, the terms require a human account holder, and the account tool returns the account's API key to the model.

Before you call either

Explorium AgentSource

  1. Send the key in the api_key header to https://api.explorium.ai and use /v2 paths. v1 is deprecated
  2. Point MCP clients at https://mcp-v2.explorium.ai/mcp. The site's agent files still name the v1 server at mcp.explorium.ai
  3. Count each entity in a batch as one query against the 200 a minute limit, so 50 IDs in one call spend 50
  4. Call the statistics endpoint first to size an audience for free. Fetch costs 1 credit a result, or 2 with the Bombora intent filter
  5. Call /v2/autocomplete before filtering on category, tech stack or job title, and never mix two category types in one request

RocketReach API

  1. Search first with person_search or company_search, which cost no credits, then look up only the profile IDs needed
  2. Treat status: "pending" as normal. Poll check_person_status after at least 3 seconds, and polling is free
  3. Do not echo the account tool's output to users or logs. It includes the account's API key
  4. Send the key in the Api-Key header. The api_key query parameter is deprecated
  5. Bulk lookup takes 1 to 100 queries and needs a webhook. Results arrive at the webhook, signed in X-RocketReach-Signature
  6. Do not loop on unknown from email_verify, or on lookup_failed and not_found. The last two are terminal

Questions

Which is better for AI agents, Explorium AgentSource or RocketReach API?

RocketReach API scores 51.2 (D) on agent readiness against Explorium AgentSource's 48.1 (D), and leads in 3 of 7 scored categories. Explorium AgentSource leads on payments & pricing.

Do Explorium AgentSource and RocketReach API need an API key?

Explorium AgentSource needs an API key. RocketReach API takes an API key or an OAuth sign-in.

Can an agent call Explorium AgentSource and RocketReach API without installing anything?

Yes. Explorium AgentSource has a hosted endpoint at https://api.explorium.ai and RocketReach API at https://api.rocketreach.co/api/v2.

Other comparisons with Explorium AgentSource or RocketReach API

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