
Attentive
Twilio
Tatango
Klaviyo
Braze
SMSGlobal
Plivo
Like Mailchimp for SMS

Startup credits and Agent Readiness report cards with sources you can inspect.

Which is more popular?
Based on our record, Sourcey should be more popular than Postscript. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | postscript.io | sourcey.com |
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| Company | Startup from the United States · 50 - 99 employees · 2018 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Postscript yet.
Sourcey tests how agents can use software and records what companies offer startups. Read Agent Readiness report cards to see the task tested, observed result, blockers, and what remains unverified. Find startup credits, discounts, and programs with their terms, eligibility caveats, and original...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
Postscript SMS Marketing Tool Demo and Review in 5 Minutes or More | Ecommerce Tech
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Postscript and Sourcey.
Sourcey's answer:
Sourcey ties startup offers and Agent Readiness findings to source evidence and versioned releases. A report card describes one agent task, its observed result, blockers, and unknowns. Offer records keep the vendor’s terms and eligibility caveats visible. The public record is free to read through the website, JSON, API, and MCP.
Sourcey's answer:
Founders comparing startup offers, developers evaluating whether an agent can complete a specific task with a service, and agents that consume the public record through HTTP or MCP.
Sourcey's answer:
Choose Sourcey when you need the original source behind an offer or a task-level account of what an agent could actually do. It shows uncertainty and release history alongside the finding. Sourcey does not apply for offers or redeem credits on a founder’s behalf.
Share your experience with using Postscript and Sourcey. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I work for this company: https://postscript.io/. Source: almost 4 years ago
Postscript is one example, raised 100m+ and are basically an SMS marketing tool for shopify stores lol. https://postscript.io. Source: about 4 years ago
Sourcey is an attempt to fix that by putting the record in public, with the receipts. It is an open registry of startup credit programs and of agent-readiness report cards, built to be read by machines first: an anonymous HTTP API with a... - Source: dev.to / about 9 hours ago
For example, from the Sourcey agent-readiness release Release_id sha256:371cbf65650abf5756c967b1f1da9df607be4b1bb0c0b93aaf2dcf0a36e75d3e (artifact_sha256:67c4edef061ca4ea60cef1e1bc246d2ce0b7d6b12e227c0811d7405d3d0a63ac, Effective... - Source: dev.to / 2 days ago
Doing all this by hand for every candidate got old fast, so now I lean on Sourcey, a registry that tracks exactly this. It publishes report cards that grade whether an agent can actually sign up, pay, and operate a service on its own,... - Source: dev.to / 14 days ago
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SMSGlobal offers a web-based platform and API's enabling businesses to send mass SMS's.
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