Crab

Crab Catch is a Web3 research skill that automatically collects and organizes project data and potential risks from social media, websites, code, and on-chain data, and produces a complete and objective research report.

Crab Catch — Research Skill Orchestration

Prerequisites

CLAWBOT must run these commands at session start (not just read them):

bash

which agent-browser || npm install -g agent-browser
agent-browser install

Data Sources

CLAWBOT is the research driver — responsible for analysis, judgment, iteration, and report generation. The APIs, scripts, and tools below are data-fetching methods only.

API Base URL: https://crab-skill.opsat.io

Signature Authentication

All API requests except /api/health require Crab signature headers.

1. Run node skills/scripts/crab-sign.js once at session start to get headers JSON. (First run auto-generates credentials; cached signature reused if still valid within 24h.)
2. Store the output and attach these four headers to all subsequent API requests: X-Crab-Timestamp, X-Crab-Signature, X-Crab-Key, X-Crab-Address.
3. Only re-run with --refresh if API returns auth_expired.

Twitter & Social Data (see twitter-analysis/SKILL.md for full params)

Category	Key endpoints	Purpose
Profile	/api/twitter/user, tweets, replies	Basic info, content, interactions
Risk signals	/api/twitter/deleted-tweets, follower-events	Removed content, follow/unfollow patterns
Reply threads	/api/readx/tweet-detail-conversation-v2	Primary comment source (fast, raw data)
Quote tweets	/api/readx/tweet-quotes	KOL commentary, community opinions with context
Engagement data	/api/readx/tweet-detail-v2	Views/source — detect bot-inflation
Deleted content	/api/readx/tweet-results-by-ids	Batch fetch deleted tweet snapshots
Long-form	/api/readx/tweet-article	Technical analyses, roadmaps published as articles
Relationships	/api/readx/following-light, friendships-show	Inner circle, team relationship verification
Credibility	/api/twitter/kol-followers, /api/readx/user-verified-followers	Who credible follows them (verified-followers needs user_id not username)
Search	/api/twitter/search, /api/readx/search2	Risk signals, disputes, community discussions

GitHub Code (see github-analysis/SKILL.md)

Local script skills/scripts/github_analyze.js — no external API. convertToMarkdown(url, options) or analyzeRepository(url, options).

On-chain Data (see onchain-audit/SKILL.md)

Binance API — address + chainName (uppercase: BSC/ETHEREUM/BASE/SOLANA):

Endpoint	Description
/api/onchain/audit	Contract audit (dual-source)
/api/onchain/token-info	Token metadata and market dynamics
/api/onchain/wallet	Wallet positions (BSC/BASE/SOLANA only)
/api/onchain/token-search	Token search (requires keyword)

Bitget API — chain + contract (lowercase: bnb/eth/base/sol):

Endpoint	Description
/api/onchain-2/token-info	Token details
/api/onchain-2/token-price	Token price
/api/onchain-2/tx-info	Transaction statistics
/api/onchain-2/liquidity	Liquidity pool info
/api/onchain-2/security-audit	Security audit

Onchain Explorer API — chain + address (see API_EXPLORER.md for full params):

Endpoint	Chain	Description
/api/explorer/contract	ETH, BSC	Contract ABI, source code, compiler info, proxy detection
/api/explorer/token-history	ETH, BSC, SOL	Token transfer history with pagination
/api/explorer/sol-address	SOL	SOL/SPL balances + recent transfer records

Website Content (see agent-browser/SKILL.md)

CLAWBOT uses agent-browser CLI to open and inspect websites.

Language Preference

Output language matches the user's input language; default Chinese (zh-CN). Raw API data (usernames, tickers, addresses, code) stays in original form.

Orchestration Flow

Callback-driven: each module's output triggers queries in other modules. Modules keep feeding each other until no new high-value leads remain.

text

User provides URL / Ticker / contract address + research intent
  │
  ▼
Step 1 — Parse input, initialize entity queue
  Extract: Twitter links, GitHub repos, contract addresses, tickers, chain
  Aggregator URLs → extract entities from path (see rules below)

  Initialize:
    entity_queue  = [{ entity, type, depth: 0 }]
    processed     = set()
    claims        = []    # official claims to verify later
    fund_trace    = []    # addresses to trace fund flow
    team_members  = []    # { handle, role, source }
    MAX_DEPTH     = 2
  │
  ▼
Step 2 — Multi-module collection

  While entity_queue is not empty:
    pop → skip if processed or depth > MAX_DEPTH → route by type:
      URL      → 2a Website
      Twitter  → 2b Social
      GitHub   → 2c Code
      Contract → 2d Chain
      Ticker   → 2d token-search first
    After each module: extract new entities → queue at depth+1
    (see Cross-module Callback Summary below for full routing)

  ── 2a. Website exploration ──────────────────────────────────

  **Use `agent-browser` CLI** (see agent-browser/SKILL.md for commands).
  agent-browser renders JS, captures interactive elements, and allows
  clicking through pages — essential for DApp testing and dynamic sites.
  Fallback to WebFetch only when agent-browser fails (e.g. install issue).

  Visit pages in order:
    Landing → Docs/Whitepaper → Team/About → DApp → Tokenomics → Footer

  Extract from each page:
    - Official claims → append to claims[] ("audited by X", "100M supply",
      "decentralized", "LP locked", partnerships, etc.)
    - Team names + social links → team_members[] + queue 2b
    - Contract addresses → queue 2d
    - GitHub repos → queue 2c

  DApp proactive testing (key investigation step):
    - Open DApp via agent-browser, wait for load
    - Does the UI render real data or just a mock shell?
    - Are core functions visible and interactive?
    - Check network requests: broken APIs? Suspicious external calls?
    - If DApp shows on-chain values → cross-check against 2d data
    - Screenshot as evidence

  Security check: SSL, domain age, redirects, suspicious popups.
  Fallback: blank/Cloudflare → retry with `--headed`. No website → flag as risk.

  ── 2b. Social data collection (Twitter) ─────────────────────

  Purpose: collect project claims, discover team, find community disputes.
  NOT the investigation core — feeds into 2a/2c/2d for verification.

  For project official account:
    1. /api/twitter/user + tweets + replies + deleted-tweets (parallel)
    2. Pick 1-2 high-value tweets → conversation-v2 + quotes
    3. /api/readx/following-light → identify team members from following list
       (mutual follows, bio mentions project, new account only posts about project)
       → add to team_members[], queue 2b at depth+1
    4. Risk search: search2 "{project} scam OR rug OR hack OR exploit"

  For team member accounts (depth 1+):
    1. /api/twitter/user + tweets (parallel)
    2. Only retain project-related tweets → append to claims[]
       (team member statements carry same weight as official claims)
    3. friendships-show with other known team members
       (all isolated = fake team red flag)

  ── 2c. Code analysis (GitHub) ───────────────────────────────

  github-analysis → analyzeRepository / convertToMarkdown

  Focus: claim verification + security scan
    - "Open source" → repo public? Code complete or stub?
    - "Audited" → audit report in repo? Code matches?
    - Hardcoded addresses (admin, treasury) → queue 2d + fund_trace[]
    - Suspicious patterns: obfuscation, eval(), wallet-draining code,
      backdoors, malicious dependencies, clipboard hijacking
    - Contributor identities → try resolve to Twitter → team_members[]
    - Freshness: last commit, bus factor, fork-of-fork detection

  ── 2d. On-chain analysis (investigation core) ───────────────

  Phase 1 — Token & contract basics (parallel):
    Binance: audit, token-info, wallet
    Bitget:  token-info, token-price, tx-info, liquidity, security-audit
    Cross-verify between sources.

  Phase 2 — Contract deep inspection (ETH/BSC):
    /api/explorer/contract → ABI + source code
    - Read ABI: identify owner-only functions (pause, mint, blacklist,
      upgrade, setFee, transferOwnership)
    - If proxy contract: queue implementation address (recursive 2d)
    - If source verified: scan for backdoor patterns in code
    - If NOT verified: flag as risk (cannot audit)

  Phase 3 — Fund flow tracing:
    Triggered by: fund_trace[], deployer discovery, large holder detection
    /api/explorer/token-history → trace address transaction history

    Tracing logic (recursive within depth limit):
      1. Fetch token-history for the address
      2. Identify significant transfers:
         - Large outflows to unknown wallets → trace recipient
         - Inflows from deployer → insider?
         - Flows to/from known exchanges → cash-out pattern?
         - Circular flows (A→B→C→A) → wash trading?
      3. For each significant counterparty:
         - New address → add to fund_trace[] at depth+1
         - Known exchange → note cash-out
         - Mixer/bridge → flag as risk signal
      4. Stop when: depth limit / no significant new flows

    SOL specific:
    - /api/explorer/sol-address → balance snapshot + SPL tokens
    - /api/explorer/token-history (SOL) → filter by type/source
      SWAP on Jupiter/Raydium = trading; TRANSFER = fund movement

  │
  ▼
Step 3 — Verify claims & resolve contradictions
  Goal: every official claim gets a verdict. Contradictions are the story.
  If verification needs data not yet collected → callback to Step 2.

  Process claims[] collected during Step 2:

    | Claim | Verify with | How |
    |-------|-------------|-----|
    | "Decentralized" | Explorer ABI + on-chain | pause/mint/blacklist? EOA or multisig? |
    | "Audited by X" | Website + GitHub + firm | Link valid? Code matches audited version? |
    | "Max supply N" | Explorer source code | Uncapped mint()? Owner can mint? |
    | "Locked liquidity" | On-chain LP lock | Lock verified? Duration? Amount? |
    | "Open source" | GitHub + Explorer | Public? Verified? ABI matches? |
    | "Partnerships" | Partner channels (browser) | Partner acknowledges? One-sided? |

    Priority: verify claims affecting user funds first.
    Mark each: ✅ Verified / ⚠️ Unverified / ❌ Contradicted

  For each ❌ or anomaly → dispute analysis:
    1. Project claim vs actual data (on-chain, code) → cite both
    2. Community analysis → search2 + conversation threads
    3. On-chain evidence → tx hashes, fund flow from fund_trace[]
    4. Synthesize: claim → reality → community → verdict
       🔴 → full analysis / 🟡 → summary only
  │
  ▼
Step 4 — Hypothesis-driven deep dig
  Follow high-value leads from Steps 2-3. May callback to any module.

  Key hypotheses:
    - Contract upgradable → who holds proxy admin?
    - Large holder → tokens from deployer? Insider?
    - Deleted tweets → timing vs on-chain events?
    - Deployer has other contracts → same pattern? Previous rugs?

  Team verification:
    - Identity: Twitter vs website claims vs GitHub commits
    - History: search2 "{name} founder OR CEO", wallet history
    - Red flags: account age = project age? No pre-project history?

  Any new lead → callback to Step 2 (respecting MAX_DEPTH).
  Stop when: no new leads or sufficient for judgment.

  ─── END OF DATA COLLECTION ───
  │
  ▼
Step 5 — Distill (no fetching)
  Rank by impact. Discard noise. Connect dots. Reconstruct timeline.
  │
  ▼
Step 6 — Produce report (see REPORT_TEMPLATE.md)
  Curated intelligence, NOT a data dump. Focus on:
    1. Contradictions & anomalies
    2. Claim verification results
    3. Fund flow analysis
    4. Proactive test results (DApp, website)
    5. Security findings
  Omit routine confirmations. [[N]](url) citations required.
  Language follows user input; default zh-CN.

Cross-module Callback Summary

Each module feeds discoveries into other modules:

text

  ┌──────────┐     handles, claims      ┌──────────┐
  │  Website  │ ──────────────────────→  │  Twitter  │
  │   (2a)    │ ◀────────────────────── │   (2b)    │
  └─────┬─────┘   URLs from tweets      └─────┬─────┘
        │ contracts, repos                     │ addresses, accusations
        ▼                                      ▼
  ┌──────────┐     hardcoded addrs      ┌──────────┐
  │  GitHub   │ ──────────────────────→  │ On-chain  │
  │   (2c)    │ ◀── code vs claims ──── │   (2d)    │
  └──────────┘                          └─────┬─────┘
                                               │ recursive
                                               ▼
                                          (2d again)

Source	Discovers	Triggers
Website	Twitter handles, claims, contracts, repos	→ team_members[]/claims[]/2b/2c/2d
Twitter	URLs, addresses, accusations, team members, statements	→ 2a/2d/fund_trace[]/claims[]/team_members[]
GitHub	Contributors, hardcoded addrs, code contradictions, trojans	→ team_members[]/2d/fund_trace[]/claims[]
On-chain	Proxy impl, deployer contracts, large holders, data contradictions	→ 2d recursive/fund_trace[]/claims[]

Depth control: 0 = user input → 1 = discovered → 2 = max, high-value only → beyond: note only

Failure Handling

Failure type	Action
Timeout / 502-504	Retry once after 3s
429 (rate limit)	Retry once after Retry-After or 10s
401 / 403 / 400	Do not retry; skip
Other errors	Do not retry; skip

On failure: skip source, continue. Include Data Coverage note in report. Omit sections with no data; never halt for a single failure.

Entity Extraction Rules

Entity Type	Identification
Twitter profile	x.com/{username} or twitter.com/{username}
Twitter post	x.com/{username}/status/{id}
GitHub repo	github.com/{owner}/{repo}
EVM contract	0x + 40 hex chars
Solana address	base58 32–44 chars + contextual keywords (below)
Ticker	$XXX or ticker/symbol/token: XXX
Chain	URL domain / path keywords / page text

Solana keywords (at least one must be present): solana, sol, raydium, jupiter, orca, meteora, pump.fun, moonshot, birdeye, solscan, solana.fm, spl token, program id No keyword → flag as "unresolved address".

Aggregator URL Parsing

Platform	Path	Parsed result
clawhub.ai	/owner/repo	→ GitHub repo (use github-analysis, skip browser)
dexscreener.com	/chain/address	→ contract + chain
dextools.io	/app/chain/pair/address	→ contract + chain
pump.fun	/address	→ Solana contract
gmgn.ai	/chain/address	→ contract + chain
birdeye.so	/token/address	→ contract
defined.fi	/chain/address	→ contract + chain

Data Display Rules

• Skip any metric that returned an error or timed out — leave it out entirely.
• Do not display API latency unless it was actually measured successfully.

Local Memory & Report Storage

1. Save report as PDF to ~/.crab-catch/reports/{project_name}_{YYYY-MM-DD}.pdf
2. Maintain index ~/.crab-catch/reports/index.json: { "project": "name", "date": "YYYY-MM-DD", "file": "filename.pdf", "entry": "original input" }

Report Output

Use REPORT_TEMPLATE.md as the report structure.

Report philosophy: curated intelligence, not data dump

The report should be concise and decision-oriented. The reader wants to know: is this project trustworthy? What are the risks? Where do the claims fall apart?

Five pillars of the report (in order of importance):

1. Contradictions & anomalies — where different sources tell different stories. This is the most valuable content. Twitter says X, website says Y, on-chain shows Z.
2. Claim verification — systematic test of every official statement. What the project claims vs what the code/chain actually shows.
3. Fund flow analysis — where the money goes. Deployer → holders → exchanges. Insider patterns, circular flows, cash-outs.
4. Proactive testing — DApp functionality, website integrity, code security. Does the product work? Is the website legit? Are there backdoors in the code?
5. Security findings — contract risks, code trojans, permission hazards. ABI dangerous functions, proxy patterns, obfuscated code.

What to omit: routine data that confirms nothing special. If a metric is normal, don't list it. If a claim checks out cleanly, a single ✅ row is enough — no paragraph. Only expand on findings that change the reader's decision.

Section constraints

Must keep — always present, fixed order:

• Header (project name + timestamp)
• 📌 Basic Information (flexible rows — agent adds/removes based on data, no fixed schema)
• 🧠 Core Findings (with Executive Summary)
• 📝 Conclusion & Verdict
• 📂 References

Default keep — user can request to skip:

• 🛡️ Verification & Cross-Reference (Claim / Contradictions / Disputes / Gaps)
• ⚠️ Risk Warning

Data-dependent — skip if no data:

• 📊 Deep Dive
  • 👤 Team & Key Figures
  • 💻 GitHub Analysis
  • ⛓️ On-chain Security
  • 📈 Social Signals
  • 📅 Project Timeline

Formatting rules

Citation system (mandatory, like academic papers):

• Every factual claim MUST have [[N]](url) citation
• No source = mark as ⚠️ Unverified, NOT stated as fact
• Sequential numbering, first appearance order
• Bidirectional: every [[N]] ↔ References entry

Other:

• Numbers: K / M / B; prices: $ prefix
• Highlight high-risk signals (honeypot, high tax, upgradable contracts)
• Data Coverage note when sources unavailable
• DYOR disclaimer
• Output language matches user input; default zh-CN