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Pay-per-call access to AI models, real-time data, media generation and multi-chain RPC over x402 micropayments (USDC on Base or Solana). No API keys, no accounts, no subscriptions. Start here when you have the BlockRun MCP installed and need to know WHICH tool answers a question, how the wallet works, or how to make a first call for free. TOOLS: blockrun_chat, blockrun_image, blockrun_video, blockrun_music, blockrun_speech, blockrun_search, blockrun_exa, blockrun_markets, blockrun_polymarket_rea
Passed 21 of 23 test cases with the skill, and 3 of 23 without it.
and 28 more in the full report
18 fixed3 passed either way2 still failing0 broke3 errored
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
One of 18 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which tool allows sending raw JSON-RPC requests to blockchains, and how many chains are supported on the single gateway? Provide a short answer.
| Checked | Without skill | With skill |
|---|---|---|
| Identifies blockrun_rpc as the tool for raw JSON-RPC requests. | Missed | Passed |
| States that the RPC gateway supports 40 chains. | Missed | Passed |
The instructions your model reads when the skill loads.
One wallet, pay-per-call, no API keys. Every paid tool below settles in USDC over x402 at the moment of the call.
There is no price table in this skill, and that is deliberate. Every flat per-call price published in this repo drifted by exactly the per-transaction fee the last time that fee changed, because each one was a typed copy. Read prices from a live source instead:
| Need | Where |
|---|---|
| Per-token model pricing | blockrun_models |
| What a call will actually cost | the 402 response — it carries the real amount |
| Full endpoint catalog with prices | https://blockrun.ai/llms.txt (Base) · https://sol.blockrun.ai/llms.txt (Solana) |
The tool descriptions in the MCP server carry the published base prices too; they are typed by hand and verified against live 402 quotes by npm run verify:prices, and the 402 header is what actually gets charged.
blockrun.ai and sol.blockrun.ai are separate deployments, and
blockrun_wallet action: "chain" switches between them mid-session. Two consequences,
both easy to miss because nothing announces the switch:
Prices differ, on purpose. Every figure in these skills is the Base price. Base
adds a flat per-transaction fee; Solana deliberately adds none — the ~$0.001-per-call gap
is pricing policy (an incentive to settle on Solana), not drift, so do not expect it to be
"fixed". Each gateway's own llms.txt quotes its own convention — read the one for the
chain you are on, or just read the 402.
Some tools do not exist on Solana at all. Verified against both gateways 2026-08-07:
| Tool | On Solana | What you get |
|---|---|---|
blockrun_defi | ✗ not served | 404 — reads like a bad path, but the path is fine |
blockrun_modal | ✗ not served | 503 on all four sandbox actions — reads like an outage |
| everything else | ✓ | ~$0.001 cheaper than the figure printed here |
test cases passed, vs 3 / 23 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.