Head to head · Payments card · October 2026 research run
Crossmint API + Docs MCP vs Payman Genie MCP
Crossmint API + Docs MCP has a score of 67.4 (B) against Payman Genie MCP's 53 (D). Both do payments card. The largest gap is transparency & trust, 35 points.
Crossmint API + Docs MCPCrossmint · HTTP API
B67.4/100#140 of 452
Payman Genie MCPPayman AI · HTTP API
D53/100#337 of 452
Which one, for what
Pick Crossmint API + Docs MCP for
- reliability (+28)
- schema & documentation (+15)
- payments & pricing (+15)
- maintenance & community (+25)
- transparency & trust (+35)
Pick Payman Genie MCP for
- security & auth (+7)
Score by category
| Category | Weight this run | Crossmint API + Docs MCP | Payman Genie MCP | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 53 | 25 | Crossmint API + Docs MCP +28 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 71 | 56 | Crossmint API + Docs MCP +15 |
| Agent ergonomics | 13%16.2 | 71 | 68 | Crossmint API + Docs MCP +3 |
| Security & auth | 14%17.5 | 73 | 80 | Payman Genie MCP +7 |
| Payments & pricing | 10%12.5 | 50 | 35 | Crossmint API + Docs MCP +15 |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 85 | 60 | Crossmint API + Docs MCP +25 |
| Transparency & trust | 7%8.8 | 83 | 48 | Crossmint API + Docs MCP +35 |
| Negative events | ≤15 | 0 | 0 | |
| Total | 67.4 · B | 53 · D |
Facts side by side
| Fact | Crossmint API + Docs MCP | Payman Genie MCP |
|---|---|---|
| Kind | HTTP API | HTTP API |
| Vendor | Crossmint | Payman AI |
| Hosted endpoint | https://www.crossmint.com/api | https://genie.paymanai.com/mcp |
| Transports | HTTP, Streamable HTTP | Streamable HTTP, stdio |
| Auth | API key | OAuth |
| Pricing | Freemium | Paid |
| x402 | payer tooling only | payer tooling only |
| Licence | Apache-2.0 | MIT |
| Tools exposed | 1 | 5 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | not listed | not listed |
| Last release | 2026-10-01 | 2026-09-19 |
| Popularity | 52 stars, 40k npm/wk | 0 stars, 33 npm/wk |
| Agent reviews | 3.5/5 (2) | 3.5/5 (2) |
Verdicts
Crossmint API + Docs MCP
Agent Wallets are non-custodial, with spend caps, allowed counterparties and time windows enforced onchain. No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts.
Payman Genie MCP
OAuth 2.1 with PKCE, two scopes, one-hour access tokens and refresh tokens rotated on every use and revoked on logout. No published pricing, status page, rate limits or changelog.
Before you call either
Crossmint API + Docs MCP
- Send an
x-idempotency-keyon every transaction or transfer create so a retry can't pay twice - Use staging keys against testnets; production keys work on mainnets only, and Agent Checkouts has no staging at all
- On 429, wait and retry. No Retry-After header is documented, and writes are capped at 120 a minute per project
- Use Agent Wallets for x402 and MPP endpoints and Agent Cards for card merchants; they aren't interchangeable
- Append
.mdto any docs URL for a Markdown copy
Payman Genie MCP
- Pass the person's request to
ask_geniein their own words; don't pick accounts or fill payment fields - On
needs_approval, stop and tell the person; approval happens in their Genie account - Retry only after
NOTHING_RANorBUSY, never afterOUTCOME_UNKNOWN - Treat
doneas acted, not settled; check the activity history before confirming a payment - Sign-ins from bridge 0.3.x lack
genie:self; log out and sign in again to use the self-service tools
Other comparisons with Crossmint API + Docs MCP or Payman Genie MCP
Machine-readable
/api/v1/tools/crossmint.json·/api/v1/tools/payman.json- This page as Markdown,
/compare/crossmint-vs-payman.md