Reverse DNS

What it grounds

Ground agents in real-time PTR records so IP-to-hostname answers reflect live DNS truth — vital for sender verification and network forensics.

Ways to ground with it

Ground security & research agents

Let an agent call Reverse DNS to pull a domain's real records or health before it reasons about risk — verifiable signal instead of a confident guess.

Enrich a workflow with real records

Wire reversednslookup into a compliance or research agent so each domain it evaluates is backed by live data it can cite.

Auditable lookups

Every record the agent uses carries Reverse DNS as its origin, so findings are traceable.

Connect over MCP

Point your agent framework at the VerveContext endpoint. Every enabled source — this one included — becomes a tool the model can call. No per-source plumbing.

context.json

{
  "mcpServers": {
    "vervecontext": {
      "url": "https://api.vervecontext.com/v1/mcp",
      "headers": { "x-api-key": "vc_live_••••" }
    }
  }
}

# “reversednslookup” is now a tool your agent can call

Facts your agent can cite

Each call returns structured fields your agent can read — and trace back to this source.

ip
hostname
ptr
found

Reverse DNS, answered

How to ground an agent in it over MCP.

How do I give my agent Reverse DNS?

Enable it on VerveContext and point your agent framework at the VerveContext MCP endpoint. Reverse DNS then appears to the model as a tool named reversednslookup, which it calls when a task needs it — no per-source plumbing.

Which agents and frameworks can use it?

Any MCP client — Claude, Cursor, LangChain, and custom agents all speak the Model Context Protocol. Reverse DNS is exposed as a standard tool, so nothing source-specific is required.

Can the agent cite Reverse DNS?

Yes. Reverse DNS is verifiable factual grounding — every value the agent pulls can carry Reverse DNS as its source, so a person (or another system) can trace where the fact came from.

How many credits does a Reverse DNS call cost?

Each call costs 5 credits. Scoped keys let you grant an agent only the sources it should reach, and usage logs show exactly what was pulled to ground each answer.

How current is the data?

Reverse DNS is served live from APIVerve's production data engine and pulled at the moment the agent calls it, so answers reflect the world now rather than the model's training cutoff.

Where does the data come from, and what shows on my bill?

VerveContext runs on APIVerve, our production data engine; Reverse DNS is one of 300+ sources on the same key. Invoices and card statements show APIVERVE.

Ground security & research agents

Enrich a workflow with real records

Auditable lookups

Reverse DNS, answered

Ground your agents in Reverse DNS. Connect over MCP, enable the source, and every answer carries its receipts.

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