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api.postagent.sh

API converts digital documents to USPS-mailed letters/postcards, accepting USDC payment via x402 micropayment protocol.

developer_tool

from$1.37

Trust signal

Emerging3333/ 100

2 of 4 pillars

coverage 50%

Pillars

Traction

—

Liveness

61%

Identity

0%

Longevity

—

Signals

On-chain settlement (CDP)

Active in last 30 days

Endpoint reachable

GitHub org present

X (Twitter) handle

.well-known/agent.json

skill.md published

ERC-8004 registered

Evidence tiers, not an endorsement · trust model v0.1.0 (provisional) · CDP-lane settlement only (D3) · Trust API coming soon

On-chain traction

No on-chain settlement recorded. Unverified = not settled or not yet indexed — never treated as zero.

ERC-8004 agent registry

—Not registered

Not found in the ERC-8004 agent registry. This is the default state — absence is not a negative signal.

Identity & classification

Domainpostagent.sh

Xunverified

GitHubunverified

ENSunverified

Category confidenceunscored

Settlement volume

USDC settled on-chain · monthly

as of Jun 29, 2026

loading chart…

Endpoints(1)

GEThttps://api.postagent.sh/v1/print

Print and mail physical US letters (PDF, HTML, Markdown, DOCX, or image) and postcards via USPS, paid in USDC — with certified/registered proof options and standalone address verification at POST /v1/verify. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the piece. Price is fixed per quote.

$1.370 USDCpay_to unverifiedunreachableJul 6