Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/nansen-ai/nansen-cli/nansen-mpp-paymentnpx skills add nansen-ai/nansen-cli --skill nansen-mpp-paymentgit clone --depth 1 https://github.com/nansen-ai/nansen-cliWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nansen-ai/nansen-cli/nansen-mpp-payment)<a href="https://agentmods.dev/skills/nansen-ai/nansen-cli/nansen-mpp-payment"><img src="https://agentmods.dev/badge/skills/nansen-ai/nansen-cli/nansen-mpp-payment.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00059 | $0.01118 |
| Opus 5 | $0.00030 | $0.00559 |
| Sonnet 5 | $0.00012 | $0.00224 |
| Haiku 4.5 | $0.00006 | $0.00112 |
Grade C, and why
nansen-mpp-payment scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://tempo.xyz/install | bash Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://tempo.xyz/install | bash How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MPP / Tempo
The Nansen API supports three paid-access rails: API key, x402 (handled by nansen-cli), and MPP via Tempo (handled by the separate tempo CLI). This skill covers the third.
nansen-cli does not sign MPP credentials. Use this skill when the user wants to call the Nansen API through tempo request because they already use tempo, want micropayments without managing wallet keys themselves, or don't want to fund a Base/Solana USDC wallet.
For API-key auth, see nansen-wallet-manager. For x402 micropayment with a local wallet, see nansen-trading / nansen-wallet-manager.
When to use this skill
- User says "MPP", "tempo", "Authorization: Payment", or "Payment-Receipt".
- User has no Nansen API key and doesn't want to set up a Base/Solana wallet.
- User is already paying for other APIs through tempo and wants Nansen on the same rail.
One-time setup
# 1. Install the tempo CLI
curl -fsSL https://tempo.xyz/install | bash
# 2. Log in (creates / unlocks the tempo wallet)
tempo wallet login
# 3. Fund it with USDC on the chain tempo selects for your environment
tempo wallet fund
# 4. Confirm the wallet is ready
tempo wallet whoami
Calling the Nansen API
tempo request handles the full MPP challenge/response: it sends the request, signs the Authorization: Payment credential when the API responds 402 + WWW-Authenticate: Payment ..., retries, and exposes the Payment-Receipt header on success.
# Smart Money netflow
tempo request POST https://api.nansen.ai/api/v1/smart-money/netflow \
--json '{"chains":["solana"],"pagination":{"page":1,"page_size":10}}'
# TGM holders
tempo request POST https://api.nansen.ai/api/v1/tgm/holders \
--json '{"token_address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","chain":"solana"}'
Endpoint paths and request shapes are the same as the rest of the Nansen API — run nansen schema <command> (no API key required) to look up the body shape, then call the matching /api/v1/... path through tempo request.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 90 lines · 59 tokens per session scan C 18409e3a77ef
nansen-mpp-payment is a skill published in the GitHub repository nansen-ai/nansen-cli (134 stars, last pushed yesterday), licensed MIT. It adds 59 tokens to every session and 1,118 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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