Who should I start in fantasy football this week?

Paste your ESPN, Sleeper or Yahoo roster and FireFantasy ranks your players with projections from 6 sources (Draft Sharks, CBS Sports, FFToday, Fantasy Football Calculator, StartWho, FantasyData), adjusts for this week's matchups, and shows the start/sit changes that score the most points in your real lineup slots.

Is this a free fantasy football lineup optimizer?

Yes. It is free and needs no account. Your roster is saved only in your browser, and the optimizer follows your league's slots, including FLEX and SUPERFLEX.

Are the rankings PPR, half-PPR or standard?

All three. Switch scoring on the rankings board or on your roster and every source's projection and rank updates to that format.

How accurate are ESPN and other fantasy football projections?

No single source is right every week, so FireFantasy averages them and shows how far apart they are. A narrow spread means the sources agree; a wide one means the call is close and the matchup matters more.

Can I set my fantasy lineup in ChatGPT or Claude?

Yes. One tap opens ChatGPT or Claude with a prompt that adds the Firecrawl plugin, reads your league, checks every source and this week's matchups, and tells you who to start.

2026 · Week 4 / 18

6 providers · live via Firecrawl

Your best fantasy lineup, from ChatGPT.

One tap. It reads your league, checks 6 expert sources and this week's matchups, and tells you who to start.

I use

Set my lineup in ChatGPT

Or try it here

Opens ChatGPT with the prompt ready. It adds the Firecrawl plugin, asks for your league, and tells you who to start.

1Your team1st & 10 · own 20

Or check it right here.

Type your Sleeper username, paste your ESPN or Yahoo team page, or drop a screenshot. No account.

2Scout2nd & 6 · own 40

Every source, one ranking.

Live projections from every provider, merged by player. The bar shows how far apart the sources are; the orange tick is the consensus. Tap a player for every source's take.

[ FETCHING LIVE ]

[ Fetching live from Alexandria ]

3Matchup3rd & 2 · own 40

Who do I start?

Search up to four players. Every source's rank and projection side by side, with the consensus call.

[ FETCHING LIVE ]

Example

Start Josh Allen. +3.1 projected pts · Brutal matchup vs NE · Lamar Jackson faces a brutal defense

[ Fetching live from Alexandria ]

Install the plugin directly

Install in ChatGPT

codex mcp add firecrawl --url https://mcp.firecrawl.dev/v2/mcp-oauth

One-click official ChatGPT plugin, also works in Codex. The command is for the Codex CLI.

Start/sit questions.

Who should I start in fantasy football this week?: Paste your ESPN, Sleeper or Yahoo roster and FireFantasy ranks your players with projections from 6 sources (Draft Sharks, CBS Sports, FFToday, Fantasy Football Calculator, StartWho, FantasyData), adjusts for this week's matchups, and shows the start/sit changes that score the most points in your real lineup slots.
Is this a free fantasy football lineup optimizer?: Yes. It is free and needs no account. Your roster is saved only in your browser, and the optimizer follows your league's slots, including FLEX and SUPERFLEX.
Are the rankings PPR, half-PPR or standard?: All three. Switch scoring on the rankings board or on your roster and every source's projection and rank updates to that format.
How accurate are ESPN and other fantasy football projections?: No single source is right every week, so FireFantasy averages them and shows how far apart they are. A narrow spread means the sources agree; a wide one means the call is close and the matchup matters more.
Can I set my fantasy lineup in ChatGPT or Claude?: Yes. One tap opens ChatGPT or Claude with a prompt that adds the Firecrawl plugin, reads your league, checks every source and this week's matchups, and tells you who to start.

4Sources1st & Goal

Built on Alexandria.

Each provider is one program on Firecrawl, called live and cached for everyone for 15 minutes.

Draft Sharks
Weekly rankings with floor and ceiling
draftsharks-com
CBS Sports
Weekly projections
cbssports-com
FFToday
Staff weekly projections
fftoday-com
Fantasy Football Calculator
Weekly rankings
fantasyfootballcalculator-com
StartWho
Projections from sportsbook props
startwho-com
FantasyData
Weekly rankings
fantasydata-com

Every ranking. One prompt. Your league.

Get the plugin

Avg	Player	Rank spread · 6 sources	DS	CS	F	FFC	S	F	Proj
1.0	Josh Allenvs NE	1–1	1	1	1	1	·	1	26.2
2.2	Lamar Jacksonvs TEN	2–3	2	2	3	2	·	2	23.1
4.2	Patrick Mahomesvs LV	3–6	5	3	6	4	·	3	22.2
5.0	Tyler Shoughvs ATL	1–7	6	7	4	5	1	7	21.3
5.6	Trevor Lawrencevs CIN	4–9	4	4	9	6	·	5	21.7
6.2	Brock Purdyvs DEN	2–15	7	15	2	3	·	4	21.5
7.4	Joe Burrowvs JAX	3–9	3	8	8	9	·	9	21.3
7.8	Jared Goffvs CAR	5–11	8	11	5	7	·	8	21.1
9.2	Bryce Youngvs DET	6–13	10	9	13	8	·	6	20.8
10.8	Dak Prescottvs HOU	7–18	9	18	7	10	·	10	20.3

Avg	Player	Rank spread · 6 sources	DS	CS	F	FFC	S	F	Proj
1.0	Josh Allenvs NE	1–1	1	1	1	1	·	1	26.2
2.2	Lamar Jacksonvs TEN	2–3	2	2	3	2	·	2	23.1
4.2	Patrick Mahomesvs LV	3–6	5	3	6	4	·	3	22.2
5.0	Tyler Shoughvs ATL	1–7	6	7	4	5	1	7	21.3
5.6	Trevor Lawrencevs CIN	4–9	4	4	9	6	·	5	21.7
6.2	Brock Purdyvs DEN	2–15	7	15	2	3	·	4	21.5
7.4	Joe Burrowvs JAX	3–9	3	8	8	9	·	9	21.3
7.8	Jared Goffvs CAR	5–11	8	11	5	7	·	8	21.1
9.2	Bryce Youngvs DET	6–13	10	9	13	8	·	6	20.8
10.8	Dak Prescottvs HOU	7–18	9	18	7	10	·	10	20.3

Source	Josh Allen BUF vs. NE	Lamar Jackson BAL vs. TEN
Consensus	#1.026.2 ptsStart	#2.223.1 pts
Draft Sharks	#123.0	#220.0
CBS Sports	#125.5	#224.5
FFToday	#129.6	#323.2
Fantasy Football Calculator	#129.7	#227.1
StartWho	·	·
FantasyData	#123.1	#220.6
Week 4 matchup	Brutalvs NE28th-most pts to QBs · 13.1/g	Brutalvs TEN31st-most pts to QBs · 11.2/g
Spread	1–1agree	2–3agree