usefulapi

openFDA MCP server. Search openFDA drug, device, food and adverse-event datasets.

Claude

Open Settings → Connectors → Add custom connector
Paste this URL:
https://openfda.usefulapi.io/mcp
Authenticate with openFDA when prompted

Cursor · VS Code · Windsurf · Cline

Add to your MCP config, then reload & authorize:

{
  "mcpServers": {
    "openfda": {
      "url": "https://openfda.usefulapi.io/mcp"
    }
  }
}

live14 toolsFree 100 tool calls / monthPro $9/mo · $90/yr

Tools 14

Tool	Type	What it does
`search_drug_events`	read	Search drug adverse-event reports (FAERS) Search the FDA Adverse Event Reporting System (FAERS): reports of drug side effects, adverse reactions and medication errors submitted to the FDA. Returns individual case reports. openFDA drug/event endpoint.
`search_drug_labels`	read	Search drug product labels (SPL) Search Structured Product Labeling (SPL): the official prescribing information for drugs — indications, warnings, dosage, adverse reactions, drug interactions and more. openFDA drug/label endpoint.
`search_drug_ndc`	read	Search the National Drug Code directory Search the National Drug Code (NDC) directory: every drug product's code, name, dosage form, route, active ingredients, marketing status and labeler. openFDA drug/ndc endpoint.
`search_drug_recalls`	read	Search drug recall enforcement reports Search drug recall enforcement reports: recalled drug products with the reason, classification (Class I/II/III), recalling firm, distribution and status. openFDA drug/enforcement endpoint.
`search_drugsfda`	read	Search Drugs@FDA approved products Search Drugs@FDA: FDA-approved drug products and their applications (NDA/ANDA/BLA), sponsors, approval dates, products and submissions. openFDA drug/drugsfda endpoint.
`search_drug_shortages`	read	Search drug shortages Search current and resolved drug shortages: the affected product, status, reason, availability and related dates. openFDA drug/shortages endpoint.
`search_device_events`	read	Search device adverse-event reports (MAUDE) Search the MAUDE database: medical device adverse events — reported injuries, deaths and malfunctions involving medical devices. openFDA device/event endpoint.
`search_device_510k`	read	Search 510(k) premarket clearances Search 510(k) premarket notification clearances: devices cleared for market as substantially equivalent to a predicate, with applicant, decision, product code and dates. openFDA device/510k endpoint.
`search_device_recalls`	read	Search device recalls Search medical device recalls: recalled devices with the reason, recalling firm, classification, product code and status. openFDA device/recall endpoint.
`search_device_classification`	read	Search device classification Search the FDA device classification database: a device type's product code, device class (I/II/III), regulation number, medical specialty and submission requirements. openFDA device/classification endpoint.
`search_food_events`	read	Search food/supplement/cosmetic adverse events (CAERS) Search the CFSAN Adverse Event Reporting System (CAERS): adverse events and product complaints for foods, dietary supplements and cosmetics. openFDA food/event endpoint.
`search_food_recalls`	read	Search food recall enforcement reports Search food recall enforcement reports: recalled food products with the reason, classification (Class I/II/III), recalling firm, distribution state and status. openFDA food/enforcement endpoint.
`count`	read	Count/aggregate over an openFDA dataset openFDA's most valuable feature: aggregate over any dataset by a field to get a top-terms histogram (returns `results: [{term, count}]` instead of records). Use the '.exact' field suffix to count whole phrases. Example: endpoint 'drug/event', field 'patient.reaction.reactionmeddrapt.exact', search 'patient.drug.medicinalproduct:"aspirin"' → the most common reactions reported for aspirin.
`openfda_query`	read	Query any openFDA endpoint (generic) Generic escape hatch to query ANY supported openFDA endpoint with the full parameter set — covers the less-common datasets (device/pma, device/registrationlisting, device/udi, device/covid19serology, drug/orangebook, other/nsde, other/substance, tobacco/problem, etc.). Use the named search tools for the common datasets; use this for everything else or for advanced queries. openFDA REST API.

Pricing

Plan	Price	Limit
Free	$0	100 tool calls / month
Pro	$9/mo · $90/yr	Unlimited

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.