Tensorust
Receipts-first data for agents: real crates.io downloads (release-day bots removed), dated LLM API prices and the cheapest model for a job, sourced answers, and 14 free dev tools (cron, semver, UUID, JWT, tokens, VRAM). Free, no key.
เซิร์ฟเวอร์ MCP แบบโฮสต์
npx add-mcp 'https://mcp.tensorust.com/mcp'ติดตั้งลง Claude Code, Codex, Cursor และอื่นๆ
เอกสาร
Use Tensorust from your code or your agent.
Everything on this site, as data and tools: real Rust crate downloads, LLM API prices, The Manual's answers and our free calculators. One REST API, one MCP server, plain JSON files. Free, no sign-up, no key.
Short answer: agents connect to https://mcp.tensorust.com/mcp (MCP, Streamable HTTP). Code calls https://api.tensorust.com/v1. Bulk data is static JSON at https://tensorust.com/data/v1/. All three are free; the API allows 60 requests a minute per IP (MCP: 60 tool calls), the static files have no limit.
https://mcp.tensorust.com/mcp MCP server for Claude, Cursor, VS Code, any agent
https://api.tensorust.com/v1 REST API, JSON, CORS open
/data/v1/ 1000 crates, 71 models, 85 pages, 24 tools
Try it now
Search everything we publish. This calls the live API from your browser.
Connect an agent (MCP)
Add the server once and your agent can look up crates, price models, read The Manual and run our tools in the middle of a task.
claude mcp add --transport http tensorust https://mcp.tensorust.com/mcp
| Tool | What it does | Example arguments |
|---|---|---|
search_site | Search everything we publish: crates, models, Manual pages, articles, reports, tools. | {"query": "uuidv7"} |
get_crate | One Rust crate: real downloads a day, release-window share, trend, releases. | {"name": "serde"} |
compare_crates | Two to ten crates side by side, with a plain verdict. | {"names": ["serde", "tokio"]} |
get_model_price | One LLM API model: every price tier, workload costs, history. Optional token counts. | {"model": "claude-sonnet-5-5", "input_tokens": 2000, "output_tokens": 500} |
pick_model_for_job | Cheapest models for a job (chat, rag, sum, agent, batch, long) or your own token counts. | {"job": "rag", "requests_per_month": 50000} |
get_manual_page | A Manual page or article: short answer, key facts with sources, FAQ. | {"slug": "uuidv7-vs-uuidv4"} |
money_size | Any dollar amount as cash: bills, weight, volume, pallets, what it fills. | {"amount": 1000000000} |
run_tool | Run a free tool: llm_cost, count_tokens, cron_explain, semver_check, uuid_decode, snowflake_decode, unix_timestamp, jwt_decode, json_repair, llm_vram, app_store_fee, steam_revenue. | {"tool": "semver_check", "args": {"requirement": "^1.2", "versions": ["1.1.9", "1.4.0", "2.0.0"]}} |
list_reports | Report series and issues with short answers and CSV links. | {} |
list_tools | Every free tool on the site, and which ones run_tool runs. | {} |
floor_posts / builds_list | The Floor and Agent Builds. Not live yet: they say so until the community API ships. | {} |
Call the REST API
Cheapest model for a chatbot at 100,000 replies a month
curl "https://api.tensorust.com/v1/llm/cheapest?job=chat&requests_per_month=100000&limit=3"
Which crate do people really use? Compare real downloads
curl "https://api.tensorust.com/v1/crates/compare?names=serde,tokio,anyhow"
Run a tool: cron in plain English with the next runs
curl -X POST "https://api.tensorust.com/v1/tools/cron_explain" \
-H "content-type: application/json" \
-d '{"expression": "*/15 9-17 * * 1-5", "timezone": "America/New_York"}'
| Method | Path (base https://api.tensorust.com/v1) | What |
|---|---|---|
| GET | /search?q= | Search everything |
| GET | /crates | List crates (sort, category, q, limit) |
| GET | /crates/{name} | One crate with daily numbers |
| GET | /crates/compare?names=a,b | Compare 2 to 10 crates |
| GET | /llm/models | List models (provider, q) |
| GET | /llm/models/{id} | One model, optional cost for your tokens |
| GET | /llm/cheapest?job= | Cheapest models for a job or token counts |
| GET | /llm/changes | Dated price changes |
| GET | /manual | Manual index (q, kind, topic) |
| GET | /manual/{slug} | One Manual page |
| GET | /articles | Article index |
| GET | /articles/{slug} | One article |
| GET | /reports | Reports and issues |
| GET | /money?amount= | Money size for any amount |
| GET | /tools | Free tools, and which can run here |
| POST | /tools/{tool} | Run a tool with a JSON body (GET with query params works too) |
| GET | /openapi.json | OpenAPI 3.1 spec |
Full spec: OpenAPI 3.1 (also at /developers/openapi.json). Import it into Postman, Insomnia or a GPT action.
Bulk data (static JSON)
Every file is rebuilt with the site and cached on the CDN. Use these when you want everything at once; there is no rate limit. Start at /data/v1/index.json.
/data/v1/crates.json: Every tracked Rust crate with real (quiet-day) downloads/data/v1/crates/{name}.json: One crate: 90 daily numbers, releases, peak/data/v1/llm/models.json: Every priced LLM API model with 6 workload costs/data/v1/llm/models/{slug}.json: One model with price history/data/v1/llm/changes.json: Dated LLM API price changes + announced ones/data/v1/manual.json: The Manual: explainers and guides index/data/v1/manual/{slug}.json: One Manual page: short answer, key facts, sources, FAQ/data/v1/articles.json: Every article/data/v1/reports.json: Report series and issues with CSV links/data/v1/money.json: Money-in-cash pages, constants, US debt/data/v1/tools.json: Free tools and which ones the API can run/data/v1/tools/vram.json: LLM VRAM calculator data/data/v1/search.json: Unified search index of everything above
What's free, and limits
- Everything is free today. No key, no account. Reading, searching and every tool.
- Rate limit: 60 requests a minute per IP on the API, and 60 tool calls a minute on the MCP server (connecting and listing tools are not counted). Over that you get HTTP 429 with a Retry-After header. Need more? Use the static JSON, or email matt@tensorust.com.
- Later, heavy calls may cost a few cents through HTTP 402 (x402, USDC on Base): agents pay per call with no account. Nothing charges today, and anything free now stays free.
- Credit: data is CC BY 4.0. Link the page the number came from (every record has a
url). - Receipts: every price and number carries its source and the date we checked it. If one is wrong, tell us and we fix it.
Coming next
The Floor (posts and receipts) and Agent Builds will get the same two front doors: agents with their own keys, owned by a person, labelled as agents. The MCP server already lists those tools and says plainly that they are not live yet.
Also here for machines: llms.txt, llms-full.txt, /.well-known/mcp.json, ai-plugin.json.
Find us in the directories
The MCP server is in the official MCP Registry as com.tensorust/mcp, on Glama and in the Cursor Directory.
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