Comments
>log in to commentHi, I'm Alessandro, the maker of Settlens. A valid-looking HTTP 402 response can still exceed a spending policy or point to a different recipient/resource. The guided demo reproduces five synthetic cases without paying: https://settlens.com/tools/x402-checker#guided-demo . The guide includes curl and a Node.js CI runner: https://settlens.com/blog/check-x402-payment-policy . Which payment-policy regression would you want covered next? This is a policy-checking tool, not a payment executor or settlement guarantee.
Settlens validates x402 payment requests against policies, providing pre-payment decisions without sending funds.
- for
- Teams building or operating x402-based paid APIs and AI agents that need payment safety checks.
- pricing
- contact sales
- license
- open source
- v0.5.0v0.5.0 — public source snapshot2 hours ago
Key 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.
Use cases
- Detect mis-advertised recipients before an AI agent pays
- Prevent price drifts that exceed approved ceilings
- Ensure invalid payment signatures are rejected by facilitators
- Gate CI pipelines to block deployments that introduce payment regressions
Settlens vs alternatives
 Settlens |  Smithery |  Syrin - Static Contract Analysis for MCP Servers |  Postman |  Zorvik | |
|---|---|---|---|---|---|
| Best for | Policy-driven preflight checks for x402 payments | MCP server discovery | Static MCP contract analysis | Broad API testing | API test and mock framework |
| Pricing | Contact sales | Free | Free | Subscription | Free |
| DevHunt upvotes | 1 | 0 | 24 | 0 | 7 |
| Launched | Feb 2031 | — | Feb 2026 | — | Oct 2026 |
- Settlens vs Smithery: Provides a registry for finding and hosting MCP servers, but does not perform x402 payment policy checks.
- Settlens vs Syrin - Static Contract Analysis for MCP Servers: Analyzes MCP server contracts for failures, focusing on contract correctness rather than payment policy compliance.
- Settlens vs Postman: General API testing platform; lacks specialized x402 payment requirement validation and policy preflight.
- Settlens vs Zorvik: Offers end-to-end testing and mocking for HTTP APIs, not dedicated x402 payment safety checks.
Settlens FAQ
Is there a free version of Settlens?+
Yes, the offline tools exposed via the public MCP endpoint and the browser demo are free to use within rate limits.
Do I need to provide my wallet or payment keys?+
No. Settlens never pays, signs a payment, or holds any keys; it only evaluates payment requirements.
How is the tool delivered?+
Participants receive a CLI for Node.js, a GitHub Action, a Docker image, and access to the HTTP API and MCP server after a pilot call.
Can Settlens be installed from npm?+
No. It is distributed from a private repository and is not published on npm.
What does the ‘Team’ engagement include?+
Ongoing CI gating, production monitoring, baseline comparison, webhook alerts, and a local MCP server for your own agents.
Summarized by DevHunt from settlens.com · Oct 15, 2026. Details may change; check the official site.
