Reach the people
building agents.
Agent Toolbox serves developers working on AI agents, tool calling and MCP. Sponsors get the top bar, the newsletter and a featured card, with prices starting at $50/month.
75 of 75 sponsor spots open
Every plan includes
Founder's Plan
Spots 1–25 at $50/mo · 25 left. Then $60 for spots 26–50, then $65. Early prices never reopen.
- 12-month term, prepay $600/yr or pay monthly
- Price locked while it auto-renews
- Cancel monthly early: you lose the Founder's price, nothing more owed
- Prepaid year: no refund, runs to term
Monthly Plan
For lists of 0–500 subscribers. 2-month minimum, then month-to-month.
- 2-month minimum
- Then cancel anytime, month to month
- Price locked while it auto-renews
One-Month Promotion
A single month. Monthly price plus 25%.
- One month of placements
- No commitment
- No price lock
The total is capped at 75 sponsor spots across all plans, with one shared waitlist. Prices grow with the newsletter. The price you lock in stays the same while your plan auto-renews. Founder's prices always stay below Monthly. Sponsorships run by calendar month. If a slot is open, your sponsorship starts on the 1st of the next month. If no slot is open, you join the waitlist, and when you're next up, you start on the 1st of the month after a slot opens. Every sponsorship runs the entire calendar month. All sales are final, and we don't guarantee results. See the sponsor terms.
All prices scale with our subscriber count
Every sponsor price comes from this table. The highlighted row is the level that applies today.
| Subscribers | Founder's #1–25 | Founder's #26–50 | Founder's after 50 | Monthly Plan | One-month (one-time) |
|---|---|---|---|---|---|
| 0–500 (now) | $50 | $60 | $65 | $75 | $95 |
| 500–1,000 | $99 | $120 | $130 | $150 | $190 |
| 1,000–2,500 | $199 | $240 | $260 | $300 | $375 |
| 2,500–5,000 | $349 | $420 | $455 | $525 | $655 |
| 5,000–10,000 | $599 | $720 | $780 | $900 | $1,125 |
| 10,000+ | $999 | $1,200 | $1,300 | $1,500 | $1,875 |
Founder's Plan and Monthly Plan prices are per month. The Monthly Plan has a 2-month minimum term. Founder's prices at today's level: #1–25 $50/mo or $600 prepaid; #26–50 $60/mo or $720 prepaid; after 50 $65/mo or $780 prepaid (12-month term). Only 25 at $50 and 25 at $60, ever. Waitlist: $65/mo, Founder's top tier.
What would a spot cost at a given list size?
Starting prices for new sponsors at that size. Founder's and Monthly prices you lock in don't change while your plan auto-renews.
Creative
Email it to sponsors@agenttoolbox.net: a headline (60 characters max), up to 75 words, one link, an optional image or GIF, and an optional video or audio link. Send it any time before your start date.
Free pre-check
Send us your creative before you buy and we'll confirm it fits our guidelines, for free.
Make-goods
If we miss a placement, we rerun it free. No results are guaranteed, and all sales are final.
Just want a directory spot?
Pinned to the top of the directory.
25 of 25 spots left · 12 left at $9.99
- Gradient card with Featured badge
- Pinned above all directory results
- Included in API and MCP search results
- Mention in the daily newsletter
Each spot runs 30 days from approved payment. No refunds. Auto-renew keeps your locked price until you cancel; if you don't renew, you'll pay the then-current base rate when you come back. When a listing expires, its spot goes to the waitlist. A separate product from the 75 sponsor spots. Featured terms.
Featured pricing by audience size
There are 25 spots. Spots 1-12 pay the tier base, spots 13-25 pay +20%. Prices follow our newsletter audience tier; we're currently in the 0-500 tier.
| Audience | Spots 1-12 | Spots 13-25 (+20%) |
|---|---|---|
| 0-500 | $9.99 | $11.99 |
| 500-1K | $19.99 | $23.99 |
| 1K-2.5K | $39.99 | $47.99 |
| 2.5K-5K | $69.99 | $83.99 |
| 5K-10K | $119.99 | $143.99 |
| 10K+ | $199.99 | $239.99 |
Questions? Email sponsors@agenttoolbox.net