Requestly VS Sourcey

Compare Requestly VS Sourcey and see what are their differences

Rating: 0 reviews
Pricing: Open source Freemium Free trial

Rating: 0 reviews
Pricing: Freemium $29 / One-off (Optional human verification)

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Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Requestly should be more popular than Sourcey. It has been mentioned 35 times since March 2021.

social mentions: 35 vs 4
Developer Tools popularity: 100% vs 0%

Base details

Website, pricing, platforms and company facts side by side.

	Requestly	Sourcey
Website	requestly.com	sourcey.com
Pricing	Open source Freemium Free trial Official pricing	Freemium $29 / One-off (Optional human verification)
Platforms	Google Chrome Firefox Edge Safari Brave Opera Vivaldi Android Windows Linux Mac OSX MacOS +9	—
Company	Startup from the United States · 20 - 49 employees · 2021	—
Listed in	Testing Localhost Tools Developer Tools Debugger Open Source API Clients +3	Startup Tools Founders Tools Research Tools

About Requestly and Sourcey

In their own words, as submitted to SaaSHub.

Requestly

Sourcey

Requestly is a modern and powerful companion for API Development and Testing. It is an open-source tool purpose-built to speed up and simplify API development workflow for developers and QAs. It is a combination of API Client and HTTP Interceptor that helps create and share API Contracts, testing...

Features and specs

What each product offers, as listed by its team.

Requestly 15 features

Sourcey 5 features

Redirect URL
Block Network Requests
Modify Request & Response Header
Modify Response
Supercharge Selenium
Session Replay
Modify Query Params
Team Workspace
API Client
API Mocks
GraphQL Support
Zero Setup
Auto Capture Sessions
Network Logs
Console Logs

Startup offers with sources
Company and program records attach the original vendor evidence, terms, and eligibility caveats; unknown eligibility stays unknown.
Agent Readiness report cards
Task-level findings show what was tested, observed blockers, evidence, and conditions that remain unverified.
Public API and MCP
People and agents can read the public record through the website, HTTP API, change feed, and MCP.
Versioned evidence
Signed releases preserve the provenance and history behind published findings.
Focused public datasets
Startup-credit and Agent Readiness JSON datasets expose the same records for downstream analysis.

Analysis

An editorial look at what each product does well and who it suits.

Requestly

Sourcey

Overall verdict

Requestly is generally regarded as a good tool due to its comprehensive functionalities and ease of use. Its ability to seamlessly manage network requests makes it suitable for both beginners and experienced developers.

Why this product is good

Requestly is widely considered a valuable tool because it offers robust and flexible features for intercepting and modifying network requests. Developers and QA testers appreciate it for its ability to simulate and debug API calls efficiently. It is particularly useful for testing changes without altering the codebase and for working with web applications in development and production environments.

Recommended for

Developers looking to debug and test API endpoints.
Quality Assurance (QA) teams that require reliable testing tools for web applications.
Technical professionals who manage network traffic and need to modify or redirect requests effortlessly.
Anyone involved in web development who needs to simulate network conditions or test application behavior under different scenarios.

No analysis of Sourcey yet.

Videos

Walkthroughs and reviews on video.

Requestly 5 videos + Add

Sourcey 0 videos + Add

Get Started with Requestly

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100

Requestly

Sourcey

100% 100%

Developer Tools

0% 0%

Founders Tools

100% 100%

Testing

0% 0%

Research Tools

100% 100%

Questions & Answers

As answered by people managing Requestly and Sourcey.

Who are some of the biggest customers of your product?

Requestly's answer

Verizon
AT&T
Adobe
Salesforce
Telegraph
Intuit
Verizon

How would you describe the primary audience of your product?

Requestly's answer

Front-end developers, QAs, PMs, Digital Marketers

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.

What makes your product unique?

Requestly's answer

Requestly is an open-source API development and testing tool that combines the capabilities of an API Client and HTTP Interceptor, making it a better alternative to Postman + Charles Proxy. It simplifies API mocking, request modification, and debugging with an intuitive no-code interface, enabling developers and QAs to test APIs efficiently.

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.

Why should a person choose your product over its competitors?

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.

User comments

Share your experience with using Requestly and Sourcey. For example, how are they different and which one is better?

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Requestly no reviews yet

Sourcey no reviews yet

Comparing Charles Proxy, Fiddler, Wireshark, and Requestly
dev.to · Aug 2019

On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We...

We have no reviews of Sourcey yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Requestly 35 mentions

Sourcey 4 mentions

Why You Need a Local-First API Client (With Hands-On Example)
If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 11 months ago
How to use Cursor to Generate API Testcases in Requestly
That’s where automation changes the game. By pairing Cursor, an AI-powered coding assistant, with Requestly's local-first API testing and mocking platform, you can offload the grunt work of writing tests to AI while keeping execution... - Source: dev.to / 11 months ago
These 20 Awesome API Clients Will Change How You Work with APIs
Requestly is a versatile browser extension and web client used to intercept, mock, and debug APIs in real-time—perfect for frontend developers. - Source: dev.to / over 1 year ago

How to cite an immutable open data registry from an autonomous agent
For example, from the Sourcey agent-readiness release Release_id sha256:371cbf65650abf5756c967b1f1da9df607be4b1bb0c0b93aaf2dcf0a36e75d3e (artifact_sha256:67c4edef061ca4ea60cef1e1bc246d2ce0b7d6b12e227c0811d7405d3d0a63ac, Effective... - Source: dev.to / about 22 hours ago
Five checks before you let an AI agent open a SaaS account on its own
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 / 13 days ago
An Agent Can Read Your API Docs and Still Can't Sign Up
Machine-readable acceptance criteria are worth more to an agent than documentation quality. A page that says we accept X, with a named artifact and its schema, is worth ten pages of tutorials, because it lets the agent verify a claim... - Source: dev.to / 28 days ago

Alternatives to Requestly and Sourcey

When comparing Requestly and Sourcey, you can also consider the following products.

Postman
The Collaboration Platform for API Development

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Proxyman.io
Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

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ngrok
ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

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Hoppscotch
Open source API development ecosystem

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HTTP Toolkit
Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

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Fiddler
Fiddler is a debugging program for websites.

Compare Fiddler to Requestly or Sourcey:

Fiddler vs Requestly Fiddler vs Sourcey