Developers

Cited diligence in your code — or your agent.

A REST API and a remote MCP server over the same reports, monitoring alerts and lead data as the app. Scoped workspace keys, one error envelope, and nothing metered without a quote first.

Make your first call API reference

Two ways in

Pick the surface that fits your workflow.

REST · 49 operations · 7 scopes

Company diligence REST API

Search companies, run diligence as jobs, read report sections with freshness, page through alerts, search leads and the trigger feed, and reveal or export contacts on credits.

Read the API docs

MCP · 16 tools · Streamable HTTP

MCP server for AI agents

Connect Claude, Cursor or your own agent to one URL. Metered tools return a price quote and a quote_id until the agent comes back with confirm: true and that quote_id.

Connect the MCP server

Time to first call

Key to first response in a minute.

01
Create a key
Start free, then open Settings → API keys. Pick only the scopes you need.
02
Make one call
Search a company name across your workspace, the tracked corpus and public registries — no credits spent.
03
Or hand it to an agent
Add the MCP server to Claude Code, Claude Desktop or Cursor with the same key and ask in plain language.

first call · curl

export MARKETPRIOR_API_KEY=mp_...   # Settings → API keys

curl "https://marketprior-diligence.fly.dev/v1/companies/search?q=Acme" \
  -H "Authorization: Bearer $MARKETPRIOR_API_KEY"

response · json

{
  "workspace_companies": [ … ],
  "corpus_matches": [ … ],
  "registry_candidates": [ { "candidate_key": "…", "name": "…", "country": "…" } ]
}

or: MCP · marketprior-diligence.fly.dev/mcp

claude mcp add --transport http marketprior https://marketprior-diligence.fly.dev/mcp \
  --header "Authorization: Bearer mp_..."

FAQ

Developer questions.

See pricing for credits, the data sources behind every section, and trust & security.

Should I use the REST API or the MCP server?

Use the REST API when your code drives the workflow — pipelines, CRMs, scheduled pulls. Use the MCP server when an AI assistant or agent should decide which call to make. Both use the same API keys, scopes, paywall, credits and rate limit.

Does the API cost extra?

No separate API fee. Calls draw on the same plan as the dashboard: a diligence run on a new company spends one assessment, contact reveals and exports spend lead credits, everything else is included.

Is there an OpenAPI document?

Yes, at https://marketprior-diligence.fly.dev/v1/openapi.json. The endpoint and tool references on these pages are generated from the same contract, so they only list what is built.

Get an API key.

Start free and make your first call in the time it takes to read this page.

Start free API reference