Back to skill

Security audit

chord

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed Chord market-data and unsigned-swap helper that sends quote details to Chord but does not sign or move funds itself.

Install only if you are comfortable with Chord receiving wallet addresses, token selections, amounts, and quote/simulation details. Never provide a private key or seed phrase, and only sign in your own wallet after checking the chain, token addresses, approval spender, approval amount, router, and minimum received. Be aware that the docs also expose a read-only backtest feature for perps/FX/metals despite the manifest saying perps are out of scope.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (51)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
91% confidence
Finding

The skill declares broad network and helper-script usage but does not define an explicit tool/permission scope. That creates unnecessary ambient authority: an integrating agent may permit file writes or arbitrary outbound requests beyond the intended API-only behavior, increasing the blast radius if the skill is misused or if downstream content becomes adversarial.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
98% confidence
Finding

The manifest explicitly says not to use the skill for 'perps or limit orders' and frames the skill around on-chain market data, swap quotes, and unsigned swap transactions. However, the documented intent table includes 'Backtest a strategy on a perp, FX pair or gold' via /v1/backtest, which expands the skill into derivatives/strategy analysis outside the stated scope.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 97)May include surrounding context.

md
## The boundary: read and prepare, never sign

- **Read-only, run without asking:** every GET above, `/v1/meta/quote` **without** a wallet,
  `/v1/quote`, `/v1/swap/simulate`.
- **Fund-moving, needs the user's confirmation first:** `POST /v1/meta/swap`, `/v1/meta/quote` with
  `taker` (it returns a transaction), `chord.py meta-swap`, `chord_swap_tx`, `chord_quote` with a

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The manifest explicitly says not to use this skill for perps or general out-of-scope markets, and otherwise frames Chord around on-chain market data, swap quotes, unsigned swaps, wallet/PnL, and liquidity on listed EVM chains plus Solana data. This file documents /v1/backtest for Hyperliquid perps and Dukascopy FX/metals, which is a materially different capability than the manifest claims.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
89% confidence
Finding

This skill instructs the agent to send wallet addresses, token selections, and swap parameters to an external API endpoint. Even though the endpoint is the expected Chord service and the calls are necessary for quoting/building unsigned swaps, it still transmits user-linked financial activity off-platform to a third party, creating privacy and data-handling risk.

Content

Scanner excerpt · references/quote-and-swap.md (reported line 44)May include surrounding context.

Raw:

bash
curl -s "https://api.getchord.xyz/v1/meta/quote?chain=8453&tokenIn=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&tokenOut=0x4200000000000000000000000000000000000006&amount=10000000&slippageBps=50&taker=0xYourWallet"
curl -s -X POST https://api.getchord.xyz/v1/meta/swap -H 'Content-Type: application/json' \
  -d '{"chain":8453,"tokenIn":"0x8335...2913","tokenOut":"0x4200...0006","amount":"10000000","slippageBps":50,"taker":"0xYourWallet"}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
89% confidence
Finding

This skill instructs the agent to send wallet addresses, token selections, and swap parameters to an external API endpoint. Even though the endpoint is the expected Chord service and the calls are necessary for quoting/building unsigned swaps, it still transmits user-linked financial activity off-platform to a third party, creating privacy and data-handling risk.

Content

Scanner excerpt · references/quote-and-swap.md (reported line 44)May include surrounding context.

Raw:

bash
curl -s "https://api.getchord.xyz/v1/meta/quote?chain=8453&tokenIn=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&tokenOut=0x4200000000000000000000000000000000000006&amount=10000000&slippageBps=50&taker=0xYourWallet"
curl -s -X POST https://api.getchord.xyz/v1/meta/swap -H 'Content-Type: application/json' \
  -d '{"chain":8453,"tokenIn":"0x8335...2913","tokenOut":"0x4200...0006","amount":"10000000","slippageBps":50,"taker":"0xYourWallet"}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
84% confidence
Finding

The quote endpoint sends token addresses, chain selection, and trade size to an external service. While this is a read-only quote path and less dangerous than swap construction, it still exposes potentially sensitive trading intent and could leak strategy or wallet-associated behavior if correlated elsewhere.

Content

Scanner excerpt · references/quote-and-swap.md (reported line 96)May include surrounding context.

Raw call, if you cannot run Python:

bash
curl -s "https://api.getchord.xyz/v1/quote?chain=8453&inputMint=0x833589fcd6edb6e08f4c7c32d4f71b54bda02913&outputMint=0x940181a94a35a4569e4529a3cdfb74e38fd98631&amount=50000000&slippageBps=50"
  • amount is in the input token's smallest unit, as a decimal string: human x 10^decimals. 50 USDC

External Transmission

Medium
Category
Data Exfiltration
Confidence
92% confidence
Finding

The POST /v1/swap flow sends the full quote body and the user's wallet address to an external service that returns transaction calldata. In this context, the external service materially influences a fund-moving transaction payload, so compromise, spoofing, or insufficient validation could cause the user to sign a malicious or incorrect transaction.

Content

Scanner excerpt · references/quote-and-swap.md (reported line 151)May include surrounding context.

Raw call: POST /v1/swap with the quote body unmodified:

bash
curl -s -X POST https://api.getchord.xyz/v1/swap -H 'Content-Type: application/json' \
  -d '{"quoteResponse": <the /v1/quote JSON>, "userPublicKey": "0xUSER_WALLET", "slippageBps": 50, "chain": 8453}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
92% confidence
Finding

The POST /v1/swap flow sends the full quote body and the user's wallet address to an external service that returns transaction calldata. In this context, the external service materially influences a fund-moving transaction payload, so compromise, spoofing, or insufficient validation could cause the user to sign a malicious or incorrect transaction.

Content

Scanner excerpt · references/quote-and-swap.md (reported line 151)May include surrounding context.

Raw call: POST /v1/swap with the quote body unmodified:

bash
curl -s -X POST https://api.getchord.xyz/v1/swap -H 'Content-Type: application/json' \
  -d '{"quoteResponse": <the /v1/quote JSON>, "userPublicKey": "0xUSER_WALLET", "slippageBps": 50, "chain": 8453}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 38)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/data.md (reported line 3)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/data.md (reported line 15)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 14)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 104)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 203)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 205)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 270)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 319)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 335)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 371)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 396)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 411)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 453)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 501)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/examples.md (reported line 520)May include surrounding context.

md
# Solana on Chord

Chord reads Solana from its own tape and serves it under `https://api.getchord.xyz/v1/chains/solana/*`.
Every call is a plain GET, no key needed (60 requests a minute per IP).

**Swaps are in beta and not open to API keys yet.** `/v1/sol/trade/*` quotes SOL ↔ one token by

Static analysis

No suspicious patterns detected.