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operantlabs/operant-mcp (operant-mcp)

operant-mcp · v1.0.0 · scanned

What changed in the harness

Selection accuracy 96→98, token cost down 2%, unconfirmed writes 0%→0%.

Category breakdown

Where the score comes from.

Earned points across the four signals Gradable measures. Safety and Legibility are scored out of 30; Economics and Discoverability are scored out of 20.

01Safety

0.0 / 30

0.0 out of 30
02Legibility

24.5 / 30

24.5 out of 30
03Economics

10.6 / 20

10.6 out of 20
04Discoverability

13.4 / 20

13.4 out of 20

Highest-impact fix

Estimated gain +30 points

Add explicit identity and permission preflight tools

Expose machine-readable principal/tenant confirmation and a non-mutating permission check so agents can verify both before destructive actions.

Description evidence

Defects and rewrites.

4 defects found across the exposed tool descriptions. Suggested rewrites make purpose, inputs, boundaries, and returns easier for an agent to understand.

Tool Defect types Suggested rewrite
pcap_follow_stream
name_restates_behavior
Reassemble a single TCP, UDP, or HTTP conversation from a PCAP into its full stream contents, useful for inspecting raw request/response exchanges such as an individual HTTP login or protocol handshake. Pick the conversation with stream_num and the protocol type; returns the reassembled stream_content along with the stream_num and protocol used. Read-only file analysis.
recon_tls_sans
name_restates_behavior
Perform a one-shot TLS handshake against a target to retrieve its certificate, used during reconnaissance to discover related hostnames and audit certificate details. Returns common_name, subject_alternative_names, issuer, validity, and san_count. Read-only TLS handshake.
ssrf_cloud_metadata
name_restates_behavior
Verify whether an SSRF-vulnerable parameter can reach cloud instance metadata endpoints (AWS/GCP/Azure); successful access can leak IAM credentials. Choose a cloud_provider (or 'all') and the tool sends requests to each provider's well-known metadata service endpoint through the given parameter, reporting provider, endpoint, status, length, and response_snippet. Side effects: May cause the target to request cloud metadata and could expose IAM credentials if successful.
raw_connection_reuse
no_return_description
Send multiple raw HTTP requests sequentially over a single TLS connection. Useful for testing connection-level attacks like request smuggling, pipeline confusion, and socket poisoning. Returns an array of the responses received for each request.

Selection evidence

Confusable tool pairs.

16 pairs where similar names or overlapping descriptions may send an agent toward the wrong tool.

Tool A Tool B Confidence Why they collide
sqli_blind_boolean sqli_blind_time medium Both are 'blind SQLi' tools with the same url+parameter schema; a task like 'test this parameter for blind SQL injection' does not say boolean vs time-based, so the agent may pick either detection strategy.
pcap_dns_analysis pcap_tls_analysis medium Identical input shape (pcap_path) and both are pcap protocol 'analysis' tools; a task like 'analyze the traffic in this pcap' leaves the protocol unspecified, so the agent may guess between DNS and TLS analysis.
volatility_linux volatility_windows medium Both run Volatility plugins against a memory dump; a task like 'analyze this memory dump / run pslist on it' often omits the OS, and the OS alone determines which tool is correct, so the agent may pick the wrong one.
nosqli_auth_bypass nosqli_detect medium Both are NoSQL injection tools; a task like 'test NoSQL injection on the login endpoint' fits both the auth-bypass tool and the generic detection tool, so the agent may pick the wrong scope.
cloudtrail_analyze cloudtrail_find_anomalies medium Same input (cloudtrail logs) and overlapping goal; a task like 'analyze/investigate these CloudTrail logs for suspicious activity' could be routed to the parse-overview tool instead of the anomaly finder, or vice versa.
graphql_introspect graphql_find_hidden medium Both descriptions advertise finding 'hidden/undocumented fields', so a task like 'find hidden/undocumented GraphQL fields' matches both and the agent may pick introspection instead of field-suggestion probing.
maldoc_analyze maldoc_extract_macros medium maldoc_analyze's description explicitly includes 'extract VBA macro code', so a task like 'extract the macros from this malicious document' could route to the heavier full-pipeline tool instead of the targeted extractor.
race_single_packet race_last_byte_sync medium Both are race-condition attacks with nearly identical request-array schemas; a task like 'test this endpoint for race conditions / double-spend' does not specify HTTP/2 single-packet vs HTTP/1.1 last-byte delivery, so either may be chosen.
raw_http_send raw_connection_reuse medium Both descriptions mention request smuggling/raw requests over TLS; a task like 'send raw requests to test for request smuggling or socket poisoning' could route to the single-request sender instead of the connection-reuse tool, or vice versa.
auth_cookie_tamper role_escalation_test medium Both test privilege escalation by sending tampered role-style cookie values; a task like 'test if I can escalate to admin by modifying cookies' matches both descriptions almost identically.
recon_directory_bruteforce auth_bruteforce medium Both are brute-force tools sharing 'brute/bruteforce/force'; a task like 'brute-force the target server' does not say whether to brute-force directories or credentials, so the agent may pick the wrong one.
recon_vhost recon_directory_bruteforce medium Both brute-force a web server using wordlists (Host-header fuzzing vs path fuzzing) and take a target; a generic task like 'brute force/fuzz example.com' is ambiguous between the two.
recon_dns recon_vhost low Subdomain/hostname tasks like 'enumerate subdomains of example.com' could route to DNS record enumeration (recon_dns) or Host-header vhost brute force (recon_vhost) depending on which approach the agent guesses is intended.
auth_bruteforce auth_cookie_tamper low A task like 'gain admin access / break into the account' could be interpreted as credential guessing (bruteforce) or session/role cookie manipulation (cookie_tamper); both are auth access-gaining tools.
auth_bruteforce nosqli_auth_bypass low A task like 'bypass the login / get into the account' could lead to either guessing passwords (bruteforce) or injecting NoSQL operators (nosqli_auth_bypass) when the agent does not know the backend.
xss_payload_generate oob_generate_payload low Both generate attacker payloads against a callback/OAST domain; a task like 'generate a payload that calls back to my OAST domain' could route to the generic OOB payload generator or the XSS generator (which has a callback_url for exfiltration).

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