TenderStack — AI-Powered Government Contract Management for Claude

What it does

Global tender intelligence, inside your AI

Every public tender across the EU, UK & US — including below-threshold — enriched by AI and available on both Claude and ChatGPT, with a clean web app for profiles & scouting.

🌍

Search everywhere

One search across EU (TED), UK (Find a Tender + Contracts Finder), and national portals (NL, BE, DE, FR) plus US SAM.gov & Grants.gov — incl. below-threshold tenders the big aggregators miss.

search_tendersscout_all

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Friendly matching tags

No more memorising 9,500 CPV codes — search by plain tags like "IT & Software" or "Healthcare & Medical", auto-derived from every notice.

matching tags

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AI summaries + data QA

Every tender gets a plain-English summary (auto-translated), and an AI agent flags data-quality issues — impossible deadlines, missing values, miscategorised codes.

enrichment

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Semantic relevance

Search by meaning, not keywords — "helping unemployed people back to work" finds the right tender in any language. Ranked by fit to your profile.

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Who won & for how much

Award notices carry the winning company and contract value — competitive intelligence across every market, going back to 2023.

awardedOnly

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Proactive daily scouting

Save a profile once and get a daily email of new matching tenders — or ask "what's new for me?" in Claude or ChatGPT anytime.

set_scout_profilemy_opportunities

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Find & Qualify

Score every opportunity against your company profile before committing resources — pull the full solicitation documents (with OCR) for go/no-go.

opportunity-discoverybid-qualification

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Capture

Build your win strategy before the RFP drops. Research the agency, map the competition, define your discriminators, and plan teaming.

capture-planningcompany-profile

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Analyze

Upload any RFP/RFQ/IFB. Extract Section L/M/C requirements, build a compliance matrix, and flag every risk before you start writing.

solicitation-analysiscontract-analysis

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Plan

Generate a full proposal response plan — volume structure, section assignments, color team schedule, milestones, and effort estimates.

bid-planningpipeline-management

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Write & Price

Draft technical, management, and cost volumes optimized for the evaluation criteria. Build BOEs, labor categories, and price-to-win models.

proposal-writingpricing-commercialreference-writing

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Review & Submit

Run Pink/Red/Gold Team reviews with evaluator-style scoring. Assemble final volumes, verify compliance, and prep for portal upload or orals.

quality-reviewsubmission-prepchecklist-filling

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Learn & Improve

Process win/loss debriefs, capture lessons learned, track KPIs, and build a reusable content library that gets better with every bid.

post-bid-analysisknowledge-management

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Law & Compliance

Look up FAR/DFARS rules, set-aside eligibility, SBA programs, protest rights, and OCI requirements without leaving Claude.

procurement-law

Live data

Official sources across the EU, UK & US

Direct from official public APIs and open data — no scraping where it can be avoided, no stale third-party feeds. Refreshed every 8 hours, with history back to 2023.

🇪🇺 TED

EU-wide tenders, all 27 member states

🇬🇧 Find a Tender

UK above-threshold tenders

🇬🇧 Contracts Finder

UK below-threshold contracts

🇳🇱 TenderNed

All Dutch tenders, incl. national

🇧🇪 e-Procurement (BDA)

Belgian tenders, incl. below-threshold

🇩🇪 oeffentlichevergabe.de

German tenders, incl. below-threshold

🇫🇷 BOAMP

French tenders & awards

🇺🇸 SAM.gov + Grants.gov

US federal contracts & grants

🇺🇸 USASpending / FPDS

US award & spending history

See it in action

From search to winning proposal — in one conversation

Real output from TenderStack running inside Claude. No demos, no mockups.

Live opportunity search results with urgency indicators

Live opportunity discovery Real-time RFP from SAM.gov with urgency flag, NAICS, set-aside type, and deadline — pulled live.

Weighted bid/no-bid scoring across 6 criteria

Weighted bid/no-bid scoring Every opportunity scored across 6 criteria — keyword match, geographic fit, set-aside eligibility, past performance, competitive position, and deadline feasibility.

GO / NO-GO recommendation with next steps A clear pursuit decision with risk factors, competitive context, and concrete recommended actions before committing.

Technical approach proposal section being written

Proposal writing — Section L aligned Full technical approach drafted to spec, with win themes, solution methodology, and CPARS-aligned past performance narrative.

Get started

Works with Claude & ChatGPT

One API key, two platforms. Pick whichever AI you already use.

🤖

Claude

Create a free account at tenderstack.io/signup and copy your sk_tdb_… key.

Add the MCP integration

In Claude.ai → Settings → Integrations → Add integration, paste your MCP URL: https://mcp.tenderstack.io/sse?key=sk_tdb_…

Start bidding

TenderStack's 17 skills activate automatically. Just describe what you need in plain English.

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ChatGPT

Same key works for both platforms. Create a free account at tenderstack.io/signup.

Open the TenderStack GPT

Find TenderStack in the ChatGPT GPT Store, or go directly to TenderStack GPT.

Enter your API key

Start a conversation and enter your sk_tdb_… key when prompted. The same 17 skills and 14 data sources are available.

Behind the product

Built on a decade of winning tenders

TenderStack is built by LemonB BV, a certified tender-management company with 10+ years of hands-on experience winning bids across Europe and the US. We've run hundreds of procurement cycles — from pre-solicitation strategy through award — and encoded that expertise into the product.

TenderStack is the open front door to our wider platform, TenderB — and the two play very different roles:

TenderStack · the intelligence layer

Find, qualify and draft against every public tender across the EU, UK & US — from inside Claude, ChatGPT or any AI agent. Discovery, who-won data, scouting and proposal drafting, API-first. Nothing to log into.

TenderB · the full platform

The complete bid-management brain — a modular workspace where your team runs the entire tender lifecycle: every source ingested, a collaborative AI writing canvas, a configurable workflow engine, jurisdiction Skills (NL · DE · UK), approvals, audit trail and memory that learns your win/loss patterns.

Visit TenderB ↗

Start in TenderStack to discover and act on opportunities today; graduate to the full TenderB workspace when you're ready to run bids end-to-end.

"Can't I just write my bid in Claude or ChatGPT?"

A general-purpose model writes fluent prose — and will confidently invent the regulation, threshold or citation that gets you disqualified. Winning public tenders isn't a writing problem; it's a compliance, evidence and memory problem. That's the part a raw chatbot can't do — and exactly what TenderB is built for:

Jurisdiction expertise, not guesswork

TenderB's NL · DE · UK Skills are curated and continuously evaluated against real procurement law, with citations to source. A generic model hallucinates the rule it can't cite.

Your institutional memory

It writes in your organisation's voice, reuses your proven, won answers, and learns your win/loss patterns. ChatGPT starts from a blank page every single time.

Compliant by construction

EU data residency, a full audit trail and ISO 27001. You cannot drop a confidential RFP into a consumer chatbot and stay compliant — your bid team can't risk it.

Quality gates before it ships

Every customer-bound output passes hallucination filters and human-in-the-loop checkpoints. No surprises in front of an evaluator who can disqualify you for one wrong claim.

TenderStack puts live opportunity intelligence in the chatbot you already use. TenderB is where that intelligence becomes a compliant, on-brand, evidence-backed bid you can actually submit.

view certificate ↗

10+

Years tender experience

500+

Bids managed

Expert skill workflows

Find & win public tenders with AI