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Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
AFLPP_DIRNoPath to AFLplusplus directory (must be inside AFLPP_MCP_ROOT)$AFLPP_MCP_ROOT/AFLplusplus
AFLPP_MCP_ROOTNoRoot directory for AFL++ workspace (default: current working directory)current working directory

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tools
{}
prompts
{}
resources
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
aflpp.list_toolsA

List AFL++ MCP tools and their short descriptions.

aflpp.helpA

Get detailed help for a tool (schema + description).

aflpp.versionA

Get AFL++ and server version information.

aflpp.init_workspaceA

Create a workspace under workspaces/ with standard subdirectories: in,out,targets,build,logs,dicts,repros,reports.

aflpp.detect_build_systemC

Detect a likely build system for a project path (heuristic).

aflpp.build_instrumentedC

Run a constrained build command with AFL++ compiler wrappers and copy the resulting artifact into the workspace targets/ directory.

aflpp.build_cmplog_variantA

Build a CMPLOG-instrumented variant by setting AFL_LLVM_CMPLOG=1 during compilation (LLVM mode) and copy the artifact into the workspace targets/ directory.

aflpp.import_corpusA

Import a seed corpus into workspaces//in/ from a file or directory within the workspace root.

aflpp.list_corpusA

Summarize a corpus directory (file count and total size).

aflpp.list_builtin_dictionariesA

List AFL++ builtin dictionaries shipped in the AFLplusplus/dictionaries directory.

aflpp.attach_dictionaryA

Attach a dictionary file to a job name (stored as a job config to be used by start_fuzz).

aflpp.dry_runA

Run a short harness validation directly against the target (not afl-fuzz): checks input mode, stability, and basic performance signals.

aflpp.showmapC

Run afl-showmap for a single testcase and return a summary of the trace.

aflpp.coverage_summaryC

Measure corpus coverage using afl-showmap -C on an AFL++ output directory.

aflpp.analyze_testcaseC

Run afl-analyze on a testcase to identify critical input regions.

aflpp.whatsupD

Run afl-whatsup on an AFL++ output directory.

aflpp.preflight_checksA

Run lightweight preflight checks before starting afl-fuzz (core_pattern, CPU scaling, corpus non-empty).

aflpp.start_fuzzC

Start an afl-fuzz job in the workspace (non-blocking).

aflpp.start_fuzz_clusterC

Start a multi-instance afl-fuzz campaign (master + secondary instances).

aflpp.suggest_fuzz_cluster_mixC

Suggest a multi-core campaign mix (instance_overrides) for aflpp.start_fuzz_cluster.

aflpp.stop_fuzzA

Stop a running afl-fuzz job by PID (SIGTERM then SIGKILL).

aflpp.statusA

Get job status by parsing fuzzer_stats and queue/crashes/hangs counts (with deltas since last call).

aflpp.campaign_summaryC

Summarize a multi-instance campaign by parsing fuzzer_stats for each instance directory.

aflpp.generate_progress_plotC

Generate an AFL++ progress plot for a job or campaign (wraps afl-plot).

aflpp.list_findingsC

List crash and hang findings with stable IDs and paths.

aflpp.repro_crashA

Reproduce a finding by running the target command directly with the testcase; captures stdout/stderr and writes a repro bundle under repros/.

aflpp.crash_reportC

Write a crash report for a finding (dedup signature + repro info + sanitizer frames if present).

aflpp.casr_reportC

Generate clustered crash reports using casr-afl (if installed).

aflpp.minimize_corpusB

Minimize a corpus using afl-cmin and store it as a new corpus directory in the workspace.

aflpp.minimize_testcaseB

Minimize a single testcase using afl-tmin and store the minimized testcase under repros/.

Prompts

Interactive templates invoked by user choice

NameDescription
aflpp-agent-workflowAgent workflow: build/instrument -> init workspace -> import/minimize corpus -> dry run -> fuzz -> monitor -> triage/repro/minimize -> (optional) dict/CMPLOG.
aflpp-harness-workplanHarness workplan: learn usage -> write LLVMFuzzerTestOneInput harness -> genesis corpus -> build CMPLOG/ASAN/vanilla -> run coordinated fuzz campaign(s).

Resources

Contextual data attached and managed by the client

NameDescription
AFL++ MCP configServer configuration (workspace root, limits, allowlist).
AFL++ MCP quickstartCurated workflow notes for the fuzzing agent.
AFL++ docs: fuzzing_in_depthUpstream AFL++ documentation: fuzzing_in_depth.md (local checkout).
AFL++ docs: CmpLogUpstream AFL++ documentation: instrumentation/README.cmplog.md (local checkout).
AFL++ docs: env_variablesUpstream AFL++ documentation: docs/env_variables.md (local checkout).

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