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Postman vs Settlens
General API testing platform; lacks specialized x402 payment requirement validation and policy preflight.
PostmanAPI platform for designing, testing and documenting APIs
SettlensCatch x402 payment-policy regressions before payingWhich to pick
Pick Postman if you want…
- Full-stack API lifecycle platform
- Broad API testing
- Integrations with VS Code, Git or AWS (on Postman's list, not Settlens')
Pick Settlens if you want…
- Policy-driven preflight checks for x402 payments
- Open-source code (Pazificateur69/settlens on GitHub)
- Integrations with Node.js, HTTP API or MCP server (on Settlens' list, not Postman's)
Side by side
- What it is
- Postman:Postman is an API platform for designing, testing, documenting, and monitoring APIs.
- Settlens:Settlens validates x402 payment requests against policies, providing pre-payment decisions without sending funds.
- Best for
- Postman:Full-stack API lifecycle platform
- Settlens:Policy-driven preflight checks for x402 payments
- Who it’s for
- Postman:Developers and teams building, testing, and managing APIs.
- Settlens:Teams building or operating x402-based paid APIs and AI agents that need payment safety checks.
- Pricing
- Postman:Freemium
- Settlens:Contact sales
- Plans
- Postman:Free $0 · Solo $9 per month (billed annually) · Team $19 per user/month (billed annuall
- Settlens:—
- Open source
- Postman:—
- Settlens:Yes, 0 GitHub stars
- Works with
- Postman:VS Code, Git, AWS, Postman CLI, Postman API
- Settlens:Node.js, HTTP API, MCP server
Postman features
- API design & discovery. Create, version, and explore APIs with the Context Graph and API discovery tools.
- Automated testing. Generate collections, run automated tests, and perform performance testing with unlimited runners.
- Mock servers. Spin up mock servers to simulate APIs before they exist.
- API monitoring. Monitor live endpoints for uptime, drift, and performance metrics.
- CI/CD integration. Run collection and governance checks on every commit via Postman CLI and integrations.
Settlens features
- Passive endpoint scan. Scans 402 handshakes and payment requirements without making any payment.
- CI gate integration. Fails pull-request jobs based on configurable severity thresholds via a GitHub Action.
- Monitoring & regression detection. Compares scans to baselines, alerts on drifts and regressions, and can post webhooks.
- Signed evidence attestation. Attests reports with an ed25519 signature and timestamp for offline verification.
- Offline signature verification. Verifies EVM and Solana payment signatures without needing RPC calls.
- MCP preflight API. Agents call evaluate_payment_requirements to get pay, review or do_not_pay decisions.
Postman vs Settlens FAQ
Is Postman or Settlens free?+
Postman has a free plan; paid plans start at $9/month (Solo).
Is Postman or Settlens open source?+
Settlens is open source (Pazificateur69/settlens on GitHub). DevHunt has no public source repository on record for Postman.
Do Postman and Settlens integrate with the same tools?+
Their integration lists don't overlap: Postman lists VS Code, Git, AWS, Postman CLI and 1 more; Settlens lists Node.js, HTTP API and MCP server.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.