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send21 API

Crypto payments: create non-custodial payment drafts, pay links, recurring templates and webhooks

73 operations100 schemas1 revision

Changes

Full history

Source

View schema
Spec
OpenAPI 3.0.4
Document
send21.io · JSON, 156 KB
Retrieved
Oct 20, 2026, 10:25 UTC
Digest
d61e1fc21a3e

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/send21/apis/send21-api.md
curl https://skmtc.dev/send21/apis/send21-api/llms.txt