NameCatcher — username intelligence for AI agents
Score and value collectible Telegram usernames: namability score (0–100) validated against 111k+ real Fragment sales, fair price estimation in GRAM, and positioning theses. Free public API — no key, no wallet, no setup.
Three ways to plug in, thinnest first:
| Layer | For | Install |
|---|
| Plain HTTP | any agent that can curl/fetch | nothing |
| Agent Skill | Claude Code / skills-compatible agents | npx skills add productmap/namecatcher-skills |
| MCP server | Claude Desktop/Code, any MCP client | npx -y namecatcher-mcp |
Built by NameCatcher — the Telegram mini app for username investors: mint catching, market analytics, portfolio, value passports.
Quick try
curl -s "https://api-namecatcher.rocketname.com/public/score/wearlab?lang=en" | jq
{
"username": "wearlab",
"score": 67,
"band": "strong",
"fair_price_ton": 400,
"thesis": "A crisp fusion of \"wear\" and \"lab\" …",
"lang": "en",
"analysis_url": "https://t.me/NameCatcherBot?startapp=name_wearlab__pub_api",
"fragment_url": "https://fragment.com/username/wearlab"
}
API reference
One endpoint, no auth:
GET https://api-namecatcher.rocketname.com/public/score/{name}?lang={en|ru}
Parameters
| Param | In | Required | Description |
|---|
name | path | yes | Username without @. 4–32 chars, a-z 0-9 _ |
lang | query | no | en (default) or ru — language of thesis |
Response fields
| Field | Type | Description |
|---|
username | string | Canonical (lowercase) username |
score | int 0–100 | Namability — quality of the name as a brandable asset. Market-validated: names scoring 90+ sell for a multiple of 80–89 names |
band | string | premium (≥80) · strong (≥66) · medium (≥50) · weak (<50). Below 50 is not investment-grade |
fair_price_ton | number | null | Class-based fair price estimate in GRAM (length × score class) |
thesis | string | null | Short positioning summary (why the name works, for whom). Present only for names already analyzed — null is not a quality signal |
lang | string | Language the thesis was returned in |
analysis_url | string | Full breakdown in the NameCatcher mini app |
fragment_url | string | The name's page on Fragment (live market status, buy/bid) |
Errors
| Status | Body | Meaning |
|---|
| 400 | {"error":"INVALID_NAME"} | Not a valid username string |
| 400 | {"error":"NOT_COLLECTIBLE"} | Valid string, but not scorable as a collectible (e.g. too short) |
| 429 | {"error":"RATE_LIMITED","retry_after_s":n} | Over 60 req/min per IP — wait retry_after_s and retry |
| 429 | {"error":"DAILY_LIMIT","limit_per_day":1000} | Over 1,000 req/day per IP |
Rate limits
60 requests/min and 1,000 requests/day per IP. Generous for agent workflows (evaluating and comparing dozens of names); not enough for bulk scraping — that's intentional. Need more for a legitimate use case? Ping @BrandEvangelist.
curl cookbook
curl -s "https://api-namecatcher.rocketname.com/public/score/morya?lang=ru" | jq '{score, band, fair_price_ton}'
for n in pulsefit traintrack fitwave; do
curl -s "https://api-namecatcher.rocketname.com/public/score/$n" | jq -c '{username, score, band}'
done | sort -t: -k2 -rn
curl -s "https://api-namecatcher.rocketname.com/public/score/vault" \
| jq '{score, fair_price_ton, below_class: (.fair_price_ton / 300 >= 1.2)}'
Agent Skill
The names/ton-usernames skill teaches an agent the full workflow: single-name evaluation, candidate comparison, and pre-purchase checks against Fragment asks.
npx skills add productmap/namecatcher-skills --skill ton-usernames
cp -r names/ton-usernames ~/.claude/skills/
A PR adding this skill to the official ton-org/skills is open.
MCP server
A thin stdio bridge over the same API — for Claude Desktop, Claude Code, and any MCP client. No key needed. Published on npm as namecatcher-mcp (GitHub install npx -y github:productmap/namecatcher-skills also works).
Remote endpoint (Streamable HTTP) — same three tools, zero install:
https://mcp-namecatcher.rocketname.com/mcp
claude mcp add --transport http namecatcher https://mcp-namecatcher.rocketname.com/mcp
Claude Code:
claude mcp add namecatcher -- npx -y namecatcher-mcp
Claude Desktop / other MCP clients (mcpServers config):
{
"mcpServers": {
"namecatcher": {
"command": "npx",
"args": ["-y", "namecatcher-mcp"]
}
}
}
| Tool | Description | Arguments |
|---|
score_name | Score one username: namability, band, fair price, thesis | name, lang? |
compare_names | Score up to 20 candidates and rank them by score | names[], lang? |
check_fragment_ask | Compare a Fragment asking price to the class valuation → fair/ask ratio + verdict | name, ask_ton |
Environment: NAMECATCHER_API_ORIGIN (optional) — override the API origin.
Notes for builders
- The score measures naming quality, deterministic per model version — safe to cache
- It is not demand for a specific lot: always check the live Fragment price before money decisions
- Pairs naturally with TON wallet tooling (@ton/mcp): evaluate → then buy
Links
License
MIT