diff --git a/.gittensory-miner.yml.example b/.gittensory-miner.yml.example
index 4f7452f19f..8e1e5b6e5e 100644
--- a/.gittensory-miner.yml.example
+++ b/.gittensory-miner.yml.example
@@ -38,6 +38,12 @@ preferredLabels:
   - bug
   - enhancement
 
+# Issue/PR labels a miner must not target; candidates carrying one are skipped.
+# String list. Default: [] (nothing blocked).
+blockedLabels:
+  - wontfix
+  - duplicate
+
 # Maximum issues a single miner may hold claimed on this repo at once, so one
 # miner cannot monopolize the queue. A positive integer (>= 1); a non-integer is
 # floored. Default: 1.
diff --git a/packages/gittensory-engine/src/miner-goal-lane-fit.ts b/packages/gittensory-engine/src/miner-goal-lane-fit.ts
index c382dcb37e..f36900a69e 100644
--- a/packages/gittensory-engine/src/miner-goal-lane-fit.ts
+++ b/packages/gittensory-engine/src/miner-goal-lane-fit.ts
@@ -26,6 +26,11 @@ export function computeMinerGoalLaneFit(
   spec: MinerGoalSpec,
 ): number {
   const issueLabels = normalizeLabels(issue.labels);
+  const blocked = normalizeLabels(spec.blockedLabels);
+  if (blocked.length > 0 && blocked.some((label) => issueLabels.includes(label))) {
+    return 0;
+  }
+
   const preferred = normalizeLabels(spec.preferredLabels);
 
   let score: number;
diff --git a/packages/gittensory-engine/src/miner-goal-spec-parse.ts b/packages/gittensory-engine/src/miner-goal-spec-parse.ts
index a2b177ab58..0149cf432c 100644
--- a/packages/gittensory-engine/src/miner-goal-spec-parse.ts
+++ b/packages/gittensory-engine/src/miner-goal-spec-parse.ts
@@ -20,6 +20,7 @@ function freezeSpec(spec: MinerGoalSpec): Readonly<MinerGoalSpec> {
     wantedPaths: Object.freeze([...spec.wantedPaths]),
     blockedPaths: Object.freeze([...spec.blockedPaths]),
     preferredLabels: Object.freeze([...spec.preferredLabels]),
+    blockedLabels: Object.freeze([...spec.blockedLabels]),
   });
 }
 
@@ -96,6 +97,7 @@ export function parseMinerGoalSpec(raw: unknown): MinerGoalSpecParseResult {
     wantedPaths: parseStringList(record.wantedPaths, "wantedPaths", warnings),
     blockedPaths: parseStringList(record.blockedPaths, "blockedPaths", warnings),
     preferredLabels: parseStringList(record.preferredLabels, "preferredLabels", warnings),
+    blockedLabels: parseStringList(record.blockedLabels, "blockedLabels", warnings),
     maxConcurrentClaims: parseClaims(record.maxConcurrentClaims, warnings),
     issueDiscoveryPolicy: parsePolicy(record.issueDiscoveryPolicy, warnings),
   });
diff --git a/packages/gittensory-engine/src/miner-goal-spec.ts b/packages/gittensory-engine/src/miner-goal-spec.ts
index 757414b86b..34e8b58ca8 100644
--- a/packages/gittensory-engine/src/miner-goal-spec.ts
+++ b/packages/gittensory-engine/src/miner-goal-spec.ts
@@ -33,6 +33,11 @@ export type MinerGoalSpec = {
    * Default: [] (no preference).
    */
   preferredLabels: readonly string[];
+  /**
+   * Issue/PR labels a miner must not target; a candidate carrying one should be skipped. String list.
+   * Default: [] (nothing blocked).
+   */
+  blockedLabels: readonly string[];
   /**
    * Maximum number of issues a single miner may hold claimed on this repo at once, so one miner cannot monopolize
    * a repo's queue. A positive integer (`>= 1`); the parser is expected to floor a non-integer toward zero
@@ -69,6 +74,7 @@ export const DEFAULT_MINER_GOAL_SPEC: Readonly<MinerGoalSpec> = Object.freeze({
   wantedPaths: Object.freeze([]),
   blockedPaths: Object.freeze([]),
   preferredLabels: Object.freeze([]),
+  blockedLabels: Object.freeze([]),
   maxConcurrentClaims: 1,
   issueDiscoveryPolicy: "neutral",
 });
@@ -83,6 +89,7 @@ function cloneDefaultMinerGoalSpec(): MinerGoalSpec {
     wantedPaths: [...DEFAULT_MINER_GOAL_SPEC.wantedPaths],
     blockedPaths: [...DEFAULT_MINER_GOAL_SPEC.blockedPaths],
     preferredLabels: [...DEFAULT_MINER_GOAL_SPEC.preferredLabels],
+    blockedLabels: [...DEFAULT_MINER_GOAL_SPEC.blockedLabels],
   };
 }
 
@@ -172,6 +179,7 @@ function hasConfiguredGoalFields(spec: MinerGoalSpec): boolean {
     spec.wantedPaths.length > 0 ||
     spec.blockedPaths.length > 0 ||
     spec.preferredLabels.length > 0 ||
+    spec.blockedLabels.length > 0 ||
     spec.maxConcurrentClaims !== DEFAULT_MINER_GOAL_SPEC.maxConcurrentClaims ||
     spec.issueDiscoveryPolicy !== DEFAULT_MINER_GOAL_SPEC.issueDiscoveryPolicy
   );
@@ -201,6 +209,7 @@ export function parseMinerGoalSpec(raw: unknown): ParsedMinerGoalSpec {
     wantedPaths: normalizeStringList(record.wantedPaths, "wantedPaths", warnings),
     blockedPaths: normalizeStringList(record.blockedPaths, "blockedPaths", warnings),
     preferredLabels: normalizeStringList(record.preferredLabels, "preferredLabels", warnings),
+    blockedLabels: normalizeStringList(record.blockedLabels, "blockedLabels", warnings),
     maxConcurrentClaims: normalizePositiveInteger(
       record.maxConcurrentClaims,
       "maxConcurrentClaims",
diff --git a/packages/gittensory-engine/test/miner-goal-lane-fit.test.ts b/packages/gittensory-engine/test/miner-goal-lane-fit.test.ts
index 550309795f..0350f8b41f 100644
--- a/packages/gittensory-engine/test/miner-goal-lane-fit.test.ts
+++ b/packages/gittensory-engine/test/miner-goal-lane-fit.test.ts
@@ -36,6 +36,12 @@ test("computeMinerGoalLaneFit applies issueDiscoveryPolicy modifiers", () => {
   assert.equal(computeMinerGoalLaneFit({ labels: ["feature"] }, discouraged), 1);
 });
 
+test("computeMinerGoalLaneFit returns 0 when a blocked label matches case-insensitively", () => {
+  const spec = { ...DEFAULT_MINER_GOAL_SPEC, blockedLabels: ["wontfix"] };
+  assert.equal(computeMinerGoalLaneFit({ labels: ["WontFix"] }, spec), 0);
+  assert.equal(computeMinerGoalLaneFit({ labels: ["bug"] }, spec), 1);
+});
+
 test("computeMinerGoalLaneFit ignores malformed label entries safely", () => {
   assert.equal(
     computeMinerGoalLaneFit({ labels: ["bug", "", 42 as unknown as string, "  "] }, {
diff --git a/packages/gittensory-engine/test/miner-goal-spec-parse.test.ts b/packages/gittensory-engine/test/miner-goal-spec-parse.test.ts
index b6c43406d0..fa50c0c48d 100644
--- a/packages/gittensory-engine/test/miner-goal-spec-parse.test.ts
+++ b/packages/gittensory-engine/test/miner-goal-spec-parse.test.ts
@@ -19,6 +19,7 @@ test("parseMinerGoalSpec coerces a full valid object and marks present", () => {
     wantedPaths: [" src/** ", "src/**"],
     blockedPaths: ["dist/**"],
     preferredLabels: [" bug ", "feature"],
+    blockedLabels: [" wontfix ", "duplicate"],
     maxConcurrentClaims: 3,
     issueDiscoveryPolicy: "ENCOURAGED",
   });
@@ -29,6 +30,7 @@ test("parseMinerGoalSpec coerces a full valid object and marks present", () => {
     wantedPaths: ["src/**"],
     blockedPaths: ["dist/**"],
     preferredLabels: ["bug", "feature"],
+    blockedLabels: ["wontfix", "duplicate"],
     maxConcurrentClaims: 3,
     issueDiscoveryPolicy: "encouraged",
   });
diff --git a/packages/gittensory-engine/test/miner-goal-spec-parser.test.ts b/packages/gittensory-engine/test/miner-goal-spec-parser.test.ts
index a3617ec70d..d3b3856383 100644
--- a/packages/gittensory-engine/test/miner-goal-spec-parser.test.ts
+++ b/packages/gittensory-engine/test/miner-goal-spec-parser.test.ts
@@ -31,6 +31,7 @@ test("parseMinerGoalSpec: valid raw config normalizes every field and keeps non-
     wantedPaths: ["src/**", " src/** ", "", "docs/**"],
     blockedPaths: ["dist/**"],
     preferredLabels: ["help wanted", "help wanted", "gittensor:feature"],
+    blockedLabels: ["duplicate", " duplicate "],
     maxConcurrentClaims: 2.9,
     issueDiscoveryPolicy: "encouraged",
   });
@@ -41,6 +42,7 @@ test("parseMinerGoalSpec: valid raw config normalizes every field and keeps non-
     wantedPaths: ["src/**", "docs/**"],
     blockedPaths: ["dist/**"],
     preferredLabels: ["help wanted", "gittensor:feature"],
+    blockedLabels: ["duplicate"],
     maxConcurrentClaims: 2,
     issueDiscoveryPolicy: "encouraged",
   });
@@ -63,6 +65,7 @@ test("parseMinerGoalSpec: malformed fields fall back independently with targeted
     wantedPaths: "src/**",
     blockedPaths: [123, " dist/** ", "", longEntry],
     preferredLabels: [false, "bugfix"],
+    blockedLabels: [123, " wontfix "],
     maxConcurrentClaims: 0.9,
     issueDiscoveryPolicy: "always",
   });
@@ -73,6 +76,7 @@ test("parseMinerGoalSpec: malformed fields fall back independently with targeted
     wantedPaths: [],
     blockedPaths: ["dist/**", longEntry.slice(0, 256)],
     preferredLabels: ["bugfix"],
+    blockedLabels: ["wontfix"],
     maxConcurrentClaims: 1,
     issueDiscoveryPolicy: "neutral",
   });
@@ -81,6 +85,7 @@ test("parseMinerGoalSpec: malformed fields fall back independently with targeted
   assert.match(warningText, /wantedPaths/i);
   assert.match(warningText, /blockedPaths/i);
   assert.match(warningText, /preferredLabels/i);
+  assert.match(warningText, /blockedLabels/i);
   assert.match(warningText, /maxConcurrentClaims/i);
   assert.match(warningText, /issueDiscoveryPolicy/i);
   assert.match(warningText, /truncated an over-long entry/i);
@@ -97,6 +102,7 @@ test("parseMinerGoalSpec: unknown-only or default-only content stays absent with
     wantedPaths: [],
     blockedPaths: [],
     preferredLabels: [],
+    blockedLabels: [],
     maxConcurrentClaims: 1,
     issueDiscoveryPolicy: "neutral",
   });
diff --git a/packages/gittensory-engine/test/miner-goal-spec.test.ts b/packages/gittensory-engine/test/miner-goal-spec.test.ts
index 329b4a933f..cd85337f02 100644
--- a/packages/gittensory-engine/test/miner-goal-spec.test.ts
+++ b/packages/gittensory-engine/test/miner-goal-spec.test.ts
@@ -16,6 +16,7 @@ test("DEFAULT_MINER_GOAL_SPEC carries the documented safe defaults", () => {
     wantedPaths: [],
     blockedPaths: [],
     preferredLabels: [],
+    blockedLabels: [],
     maxConcurrentClaims: 1,
     issueDiscoveryPolicy: "neutral",
   });
@@ -26,10 +27,12 @@ test("DEFAULT_MINER_GOAL_SPEC is deep-frozen so the shared singleton can't be mu
   assert.ok(Object.isFrozen(DEFAULT_MINER_GOAL_SPEC.wantedPaths));
   assert.ok(Object.isFrozen(DEFAULT_MINER_GOAL_SPEC.blockedPaths));
   assert.ok(Object.isFrozen(DEFAULT_MINER_GOAL_SPEC.preferredLabels));
+  assert.ok(Object.isFrozen(DEFAULT_MINER_GOAL_SPEC.blockedLabels));
 });
 
 test("DEFAULT_MINER_GOAL_SPEC exposes exactly the specified field surface", () => {
   assert.deepEqual(Object.keys(DEFAULT_MINER_GOAL_SPEC).sort(), [
+    "blockedLabels",
     "blockedPaths",
     "issueDiscoveryPolicy",
     "maxConcurrentClaims",
diff --git a/test/unit/miner-goal-lane-fit.test.ts b/test/unit/miner-goal-lane-fit.test.ts
new file mode 100644
index 0000000000..44e9ea321f
--- /dev/null
+++ b/test/unit/miner-goal-lane-fit.test.ts
@@ -0,0 +1,29 @@
+import { describe, expect, it } from "vitest";
+import {
+  computeMinerGoalLaneFit,
+  DEFAULT_MINER_GOAL_SPEC,
+  isMinerRepoTargetable,
+} from "../../packages/gittensory-engine/src/index";
+
+describe("computeMinerGoalLaneFit", () => {
+  it("respects minerEnabled opt-out", () => {
+    expect(isMinerRepoTargetable(DEFAULT_MINER_GOAL_SPEC)).toBe(true);
+    expect(isMinerRepoTargetable({ ...DEFAULT_MINER_GOAL_SPEC, minerEnabled: false })).toBe(false);
+  });
+
+  it("returns 0 when a blocked label matches case-insensitively", () => {
+    const spec = { ...DEFAULT_MINER_GOAL_SPEC, blockedLabels: ["wontfix", "duplicate"] };
+    expect(computeMinerGoalLaneFit({ labels: ["WontFix"] }, spec)).toBe(0);
+    expect(computeMinerGoalLaneFit({ labels: ["DUPLICATE"] }, spec)).toBe(0);
+  });
+
+  it("continues scoring when blocked labels are configured but none match", () => {
+    const spec = { ...DEFAULT_MINER_GOAL_SPEC, blockedLabels: ["wontfix"], preferredLabels: ["bug"] };
+    expect(computeMinerGoalLaneFit({ labels: ["bug"] }, spec)).toBe(1);
+    expect(computeMinerGoalLaneFit({ labels: ["feature"] }, spec)).toBe(0.25);
+  });
+
+  it("scores normally when no blocked labels are configured", () => {
+    expect(computeMinerGoalLaneFit({ labels: ["docs"] }, DEFAULT_MINER_GOAL_SPEC)).toBe(1);
+  });
+});
diff --git a/test/unit/miner-goal-spec-parser.test.ts b/test/unit/miner-goal-spec-parser.test.ts
index 1293270659..0acb3c6742 100644
--- a/test/unit/miner-goal-spec-parser.test.ts
+++ b/test/unit/miner-goal-spec-parser.test.ts
@@ -38,6 +38,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
       wantedPaths: ["src/**", " src/** ", "", "docs/**"],
       blockedPaths: ["dist/**", longEntry],
       preferredLabels: ["help wanted", "help wanted", "gittensor:feature"],
+      blockedLabels: ["duplicate", " duplicate "],
       maxConcurrentClaims: 2.9,
       issueDiscoveryPolicy: "encouraged",
     });
@@ -49,6 +50,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
         wantedPaths: ["src/**", "docs/**"],
         blockedPaths: ["dist/**", longEntry.slice(0, 256)],
         preferredLabels: ["help wanted", "gittensor:feature"],
+        blockedLabels: ["duplicate"],
         maxConcurrentClaims: 2,
         issueDiscoveryPolicy: "encouraged",
       },
@@ -82,6 +84,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
       wantedPaths: "src/**",
       blockedPaths: [123, " dist/** "],
       preferredLabels: [false, "bugfix"],
+      blockedLabels: [123, " wontfix "],
       maxConcurrentClaims: "3",
       issueDiscoveryPolicy: "always",
     });
@@ -93,6 +96,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
         wantedPaths: [],
         blockedPaths: ["dist/**"],
         preferredLabels: ["bugfix"],
+        blockedLabels: ["wontfix"],
         maxConcurrentClaims: 1,
         issueDiscoveryPolicy: "neutral",
       },
@@ -101,6 +105,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
         expect.stringMatching(/wantedPaths/i),
         expect.stringMatching(/blockedPaths/i),
         expect.stringMatching(/preferredLabels/i),
+        expect.stringMatching(/blockedLabels/i),
         expect.stringMatching(/maxConcurrentClaims/i),
         expect.stringMatching(/issueDiscoveryPolicy/i),
       ]),
@@ -131,6 +136,7 @@ describe("MinerGoalSpec parser (#2301)", () => {
         wantedPaths: [],
         blockedPaths: [],
         preferredLabels: [],
+        blockedLabels: [],
         maxConcurrentClaims: 1,
         issueDiscoveryPolicy: "neutral",
       }),