Payaion
PYPI · PAYAION-MCP · 2 COMPONENTS · SCANNED SEP 16
Agent file transfer. No API key to start; price downloads in USDC on Base.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security50
- Malware scan not yet available for this package.Unverified
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised native-build step with no shell scripting around it. View diagnostics → Pass
- 0 of 29 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency6
- Repository check failed: no source repository is declared. See how to fix → View diagnostics → Fail
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- License check failed: the license (MIT License) isn't a recognized OSI-approved license. See how to fix → Fail
- Actively maintained (last published 31 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability68
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1022 tokens (~113/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management87
- Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "transfer" implies "transfer" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Payaion MCP server?
Payaion runs locally as a PyPI package, launched with uvx payaion-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · payaion-mcp
claude mcp add defdone-payaion -- uvx payaion-mcp
{
"mcpServers": {
"defdone-payaion": {
"command": "uvx",
"args": [
"payaion-mcp"
]
}
}
} {
"servers": {
"defdone-payaion": {
"command": "uvx",
"args": [
"payaion-mcp"
]
}
}
} codex mcp add defdone-payaion -- uvx payaion-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"defdone-payaion": {
"type": "local",
"command": [
"uvx",
"payaion-mcp"
],
"enabled": true
}
}
} openclaw mcp add defdone-payaion --command uvx --arg payaion-mcp
mcp_servers:
defdone-payaion:
command: "uvx"
args: ["payaion-mcp"] {
"McpServers": {
"defdone-payaion": {
"Transport": "stdio",
"Command": "uvx",
"Arguments": [
"payaion-mcp"
]
}
}
} assistant mcp add defdone-payaion -t stdio -c uvx -a payaion-mcp
{
"mcpServers": {
"defdone-payaion": {
"command": "uvx",
"args": [
"payaion-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 16 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Sept 26 −3
- Stability: pass → 0.80 functional
- 13 Sept 26 −14
- Malware scan: pass → unverified ▼ security
- Stability: 0.97 → pass security
- 12 Sept 26 +15
- Malware scan: unverified → pass ▲ security
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 9 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 8 Sept 26 −15
- Malware scan: pass → unverified ▼ security
- 7 Sept 26 −3
- Stability: pass → 0.80 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 16 Sept 2026 · Analysed pypi/payaion-mcp@1.0.5
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | pypi |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 29 packages
| Packages resolved | 29 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
browse_marketplace ~74
Search and browse active listings on the Payaion marketplace. Filter by keyword, category, and paginate through results. Returns listing details including title, price, file info, and unified page URL. No API key required.
| Name | Type | Req | Description |
|---|---|---|---|
| category | – | – | – |
| page | – | – | – |
| pageSize | – | – | – |
| q | – | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_download_url ~80
Get a fresh shareable download URL for a previously uploaded file. The file must be in READY status. Share this URL with anyone — it works without authentication. No API key required — without one you upload as a guest (100 MB, 24-hour link); a key raises the limits and lets you sell.
| Name | Type | Req | Description |
|---|---|---|---|
| uploadId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_payment_requirements ~65
Retrieve payment requirements for a marketplace asset before purchasing. Returns whether the asset is free or paid. For paid assets, includes the x402 payment requirements object that must be signed by the buyer's wallet and passed to the purchase_asset tool.
| Name | Type | Req | Description |
|---|---|---|---|
| upload_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_upload_status ~113
Check the processing status of a previously uploaded file. Returns the current status (PENDING_UPLOAD, UPLOADING, READY, FAILED) and whether the file is ready for download. Rarely needed — the 'transfer' tool handles polling automatically. Use this only to check on uploads that timed out or for manual status inspection. No API key required — without one you upload as a guest (100 MB, 24-hour link); a key raises the limits and lets you sell.
| Name | Type | Req | Description |
|---|---|---|---|
| uploadId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
list_on_marketplace ~91
List an already-uploaded file on the public Payaion marketplace. The upload must be READY status and have a price set. Returns the unified page URL where buyers can view details and download. Requires the agent key owner to own the upload.
| Name | Type | Req | Description |
|---|---|---|---|
| category | – | – | – |
| description | string | yes | – |
| tags | – | – | – |
| title | string | yes | – |
| uploadId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
purchase_asset ~105
Finalize the purchase of a paid marketplace asset. Requires a signed x402 payment payload from the buyer's wallet. First call get_payment_requirements to obtain the payment requirements, sign them with your EVM wallet, then pass the signed payload here. Returns the purchase receipt including a directDownloadUrl — GET that URL with your X-Aion-Key header to download the file immediately, no extra steps needed.
| Name | Type | Req | Description |
|---|---|---|---|
| payment_payload | object | yes | – |
| upload_id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
transfer ~190
One-shot file transfer with optional pricing and marketplace listing. Upload a file, set a per-download price, and list on the marketplace — all in a single call. Returns a shareable download URL. Supports free transfers, paid downloads, and marketplace listings. Provide EXACTLY ONE of: 'filePath' (local stdio — zero tokens), 'url' (remote fetch), or 'content' (base64 fallback). No API key required — without one you upload as a guest (100 MB, 24-hour link); a key raises the limits and lets you sell.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | – |
| fileName | – | – | – |
| filePath | – | – | – |
| idempotencyKey | – | – | – |
| listingCategory | – | – | – |
| listingDescription | – | – | – |
| listingTags | – | – | – |
| listingTitle | – | – | – |
| mimeType | – | – | – |
| pricePerDownload | – | – | – |
| url | – | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
upload_file ~163
Low-level upload. Prefer the 'transfer' tool instead — it handles polling automatically. This tool returns immediately with PENDING_UPLOAD status; you must poll get_upload_status yourself. Max file size follows the account plan (Basic 500 MB / Pro 1 GB). Provide EITHER 'filePath' (local stdio only) OR 'content' (base64). Use only when you need explicit control over the upload lifecycle. No API key required — without one you upload as a guest (100 MB, 24-hour link); a key raises the limits and lets you sell.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | – |
| fileName | – | – | – |
| filePath | – | – | – |
| idempotencyKey | – | – | – |
| mimeType | – | – | – |
| pricePerDownload | – | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
upload_from_url ~141
Low-level upload from URL. Prefer the 'transfer' tool instead — it handles polling automatically. This tool returns immediately with PENDING_UPLOAD status; you must poll get_upload_status yourself. Max file size follows the account plan (Basic 500 MB / Pro 1 GB). Private/internal URLs are blocked. Use only when you need explicit control over the upload lifecycle. No API key required — without one you upload as a guest (100 MB, 24-hour link); a key raises the limits and lets you sell.
| Name | Type | Req | Description |
|---|---|---|---|
| fileName | – | – | – |
| idempotencyKey | – | – | – |
| pricePerDownload | – | – | – |
| url | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
What is the Payaion MCP server?
Payaion is an MCP server listed in the public MCP registry as io.github.defdone/payaion. Agent file transfer. No API key to start; price downloads in USDC on Base. This page covers its PyPI package (payaion-mcp).
Is the Payaion MCP server safe to use?
Payaion scores 55 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 16 September 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Payaion MCP server expose?
Payaion exposes 9 tools: upload_file, upload_from_url, transfer, get_upload_status, get_download_url, and 4 more. Their descriptions and schemas cost roughly 1,022 tokens of context every time the server is loaded.
Is the Payaion MCP server still maintained?
Payaion is still listed as active in the MCP registry. We last reached this channel on 16 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.