Introduction to Tendios

Tendios is a B2B platform built around public procurement. It connects the two sides of the public tendering process: the companies that compete for public contracts, and the public institutions that publish them. The API gives you programmatic access to the same data and workflows available in both portals.

The two portals

Bid — for companies and suppliers

Bid is designed for private-sector organisations looking to discover, analyse, and win public tenders. Key capabilities:

• Tender search — search across active public tenders from Spanish and European procurement databases, filtered by CPV code, sector, region, buyer, and budget
• Alerts — keyword and CPV-based alerts that deliver matching tenders to your inbox on a schedule you control
• Opportunities pipeline — a CRM-style board to track every tender your team is working on, with tasks, milestones, and candidate qualification workflows
• Saved tenders & collections — organise tenders into labelled folders (containers) for your team
• Document templates — pre-fill reusable DOCX templates from tender data
• AI tools — assistants for contract object, contract type, CPV classification, procedure type, and tender document drafting

Create — for public institutions

Create is built for contracting authorities — municipalities, ministries, agencies, and other public bodies — that need to draft and publish tenders. Key capabilities:

• AI-assisted drafting — intelligent suggestions for PCAP, PPT, and technical specifications
• Compliance automation — built-in checks against LCSP and European procurement directives
• Rich text editor — a structured document editor (Tiptap) purpose-built for official procurement documents
• Workflow management — route drafts through internal approval stages before publication

What the API lets you build

Use case	Relevant endpoints
Pull live tender listings into your own product	GET /api/tender-v2
React to new tenders that match your criteria	Alerts API
Sync procurement pipeline status with your internal CRM	Opportunities API
Automate document generation from tender data	Templates API
Show a buyer's tender history and awards	Tender insights endpoints

Browse every available endpoint in the API Reference.

API access and subscription tiers

API access is a paid feature available on select Bid subscription plans.

Feature	Freemium	Paid plans
API access	No	Yes
Max CPVs in search	5	Higher per tier
Historical data	1 year	Up to full history
Alerts	1	Up to plan limit
Advanced filters	No	Yes
AI assistants	Basic only	Full suite

Contact hello@tendios.com to upgrade your plan or request API access.

Rate limits

All API endpoints share a global rate limit of 300 requests per 60-second window per IP address.

HTTP/1.1 429 Too Many Requests
Retry-After: 60

Authentication

Every request requires a valid API key. See the Authentication guide.